A) System HW overview
B) SHOW GLOBAL STATUS; after minimum 24 hours UPTIME
C) SHOW GLOBAL VARIABLES;
D) SHOW FULL PROCESSLIST;
E) Htop
F) Ulimit -a

# A) System overview
All three InnoDB nodes are ESXi VMs with the same HW configuration
RAM: 12GB
CPU: 6 Cores
HDD: A SAN cabibinet with spinning discs + some SSDs as cache directly connected with fibre channel


# B) SHOW GLOBAL STATUS, ~13days uptime
show global status where Variable_name not like "%public_key%" and Variable_name != "Mysqlx_ssl_cipher_list";
+-------------------------------------------------------+--------------------------------------------------+
| Variable_name                                         | Value                                            |
+-------------------------------------------------------+--------------------------------------------------+
| Aborted_clients                                       | 2                                                |
| Aborted_connects                                      | 0                                                |
| Acl_cache_items_count                                 | 0                                                |
| Binlog_cache_disk_use                                 | 445                                              |
| Binlog_cache_use                                      | 260382                                           |
| Binlog_stmt_cache_disk_use                            | 0                                                |
| Binlog_stmt_cache_use                                 | 10                                               |
| Bytes_received                                        | 23810585                                         |
| Bytes_sent                                            | 515667027                                        |
| Com_admin_commands                                    | 159876                                           |
| Com_assign_to_keycache                                | 0                                                |
| Com_alter_db                                          | 0                                                |
| Com_alter_event                                       | 0                                                |
| Com_alter_function                                    | 0                                                |
| Com_alter_instance                                    | 0                                                |
| Com_alter_procedure                                   | 0                                                |
| Com_alter_resource_group                              | 0                                                |
| Com_alter_server                                      | 0                                                |
| Com_alter_table                                       | 0                                                |
| Com_alter_tablespace                                  | 0                                                |
| Com_alter_user                                        | 0                                                |
| Com_alter_user_default_role                           | 0                                                |
| Com_analyze                                           | 5                                                |
| Com_begin                                             | 260366                                           |
| Com_binlog                                            | 0                                                |
| Com_call_procedure                                    | 155139                                           |
| Com_change_db                                         | 164064                                           |
| Com_change_master                                     | 0                                                |
| Com_change_repl_filter                                | 0                                                |
| Com_change_replication_source                         | 0                                                |
| Com_check                                             | 0                                                |
| Com_checksum                                          | 0                                                |
| Com_clone                                             | 0                                                |
| Com_commit                                            | 260366                                           |
| Com_create_db                                         | 1                                                |
| Com_create_event                                      | 0                                                |
| Com_create_function                                   | 0                                                |
| Com_create_index                                      | 0                                                |
| Com_create_procedure                                  | 0                                                |
| Com_create_role                                       | 0                                                |
| Com_create_server                                     | 0                                                |
| Com_create_table                                      | 39                                               |
| Com_create_resource_group                             | 0                                                |
| Com_create_trigger                                    | 0                                                |
| Com_create_udf                                        | 0                                                |
| Com_create_user                                       | 0                                                |
| Com_create_view                                       | 5                                                |
| Com_create_spatial_reference_system                   | 0                                                |
| Com_dealloc_sql                                       | 0                                                |
| Com_delete                                            | 4458                                             |
| Com_delete_multi                                      | 0                                                |
| Com_do                                                | 0                                                |
| Com_drop_db                                           | 0                                                |
| Com_drop_event                                        | 0                                                |
| Com_drop_function                                     | 0                                                |
| Com_drop_index                                        | 0                                                |
| Com_drop_procedure                                    | 0                                                |
| Com_drop_resource_group                               | 0                                                |
| Com_drop_role                                         | 0                                                |
| Com_drop_server                                       | 0                                                |
| Com_drop_spatial_reference_system                     | 0                                                |
| Com_drop_table                                        | 7                                                |
| Com_drop_trigger                                      | 0                                                |
| Com_drop_user                                         | 0                                                |
| Com_drop_view                                         | 0                                                |
| Com_empty_query                                       | 0                                                |
| Com_execute_sql                                       | 0                                                |
| Com_explain_other                                     | 0                                                |
| Com_flush                                             | 1                                                |
| Com_get_diagnostics                                   | 0                                                |
| Com_grant                                             | 0                                                |
| Com_grant_roles                                       | 0                                                |
| Com_ha_close                                          | 0                                                |
| Com_ha_open                                           | 0                                                |
| Com_ha_read                                           | 0                                                |
| Com_help                                              | 0                                                |
| Com_import                                            | 0                                                |
| Com_insert                                            | 36129                                            |
| Com_insert_select                                     | 0                                                |
| Com_install_component                                 | 0                                                |
| Com_install_plugin                                    | 0                                                |
| Com_kill                                              | 0                                                |
| Com_load                                              | 0                                                |
| Com_lock_instance                                     | 0                                                |
| Com_lock_tables                                       | 0                                                |
| Com_optimize                                          | 5                                                |
| Com_preload_keys                                      | 0                                                |
| Com_prepare_sql                                       | 0                                                |
| Com_purge                                             | 0                                                |
| Com_purge_before_date                                 | 0                                                |
| Com_release_savepoint                                 | 0                                                |
| Com_rename_table                                      | 0                                                |
| Com_rename_user                                       | 0                                                |
| Com_repair                                            | 0                                                |
| Com_replace                                           | 0                                                |
| Com_replace_select                                    | 0                                                |
| Com_reset                                             | 0                                                |
| Com_resignal                                          | 0                                                |
| Com_restart                                           | 0                                                |
| Com_revoke                                            | 0                                                |
| Com_revoke_all                                        | 0                                                |
| Com_revoke_roles                                      | 0                                                |
| Com_rollback                                          | 0                                                |
| Com_rollback_to_savepoint                             | 0                                                |
| Com_savepoint                                         | 0                                                |
| Com_select                                            | 171716                                           |
| Com_set_option                                        | 8461                                             |
| Com_set_password                                      | 0                                                |
| Com_set_resource_group                                | 0                                                |
| Com_set_role                                          | 0                                                |
| Com_signal                                            | 0                                                |
| Com_show_binlog_events                                | 0                                                |
| Com_show_binlogs                                      | 0                                                |
| Com_show_charsets                                     | 0                                                |
| Com_show_collations                                   | 4189                                             |
| Com_show_create_db                                    | 0                                                |
| Com_show_create_event                                 | 0                                                |
| Com_show_create_func                                  | 0                                                |
| Com_show_create_proc                                  | 4                                                |
| Com_show_create_table                                 | 0                                                |
| Com_show_create_trigger                               | 0                                                |
| Com_show_databases                                    | 5                                                |
| Com_show_engine_logs                                  | 0                                                |
| Com_show_engine_mutex                                 | 0                                                |
| Com_show_engine_status                                | 0                                                |
| Com_show_events                                       | 0                                                |
| Com_show_errors                                       | 0                                                |
| Com_show_fields                                       | 0                                                |
| Com_show_function_code                                | 0                                                |
| Com_show_function_status                              | 0                                                |
| Com_show_grants                                       | 0                                                |
| Com_show_keys                                         | 0                                                |
| Com_show_master_status                                | 0                                                |
| Com_show_open_tables                                  | 0                                                |
| Com_show_plugins                                      | 0                                                |
| Com_show_privileges                                   | 0                                                |
| Com_show_procedure_code                               | 0                                                |
| Com_show_procedure_status                             | 0                                                |
| Com_show_processlist                                  | 0                                                |
| Com_show_profile                                      | 0                                                |
| Com_show_profiles                                     | 0                                                |
| Com_show_relaylog_events                              | 0                                                |
| Com_show_replicas                                     | 0                                                |
| Com_show_slave_hosts                                  | 0                                                |
| Com_show_replica_status                               | 0                                                |
| Com_show_slave_status                                 | 0                                                |
| Com_show_status                                       | 4                                                |
| Com_show_storage_engines                              | 0                                                |
| Com_show_table_status                                 | 0                                                |
| Com_show_tables                                       | 0                                                |
| Com_show_triggers                                     | 0                                                |
| Com_show_variables                                    | 1607                                             |
| Com_show_warnings                                     | 2                                                |
| Com_show_create_user                                  | 0                                                |
| Com_shutdown                                          | 0                                                |
| Com_replica_start                                     | 0                                                |
| Com_slave_start                                       | 0                                                |
| Com_replica_stop                                      | 0                                                |
| Com_slave_stop                                        | 0                                                |
| Com_group_replication_start                           | 0                                                |
| Com_group_replication_stop                            | 0                                                |
| Com_stmt_execute                                      | 0                                                |
| Com_stmt_close                                        | 0                                                |
| Com_stmt_fetch                                        | 0                                                |
| Com_stmt_prepare                                      | 0                                                |
| Com_stmt_reset                                        | 0                                                |
| Com_stmt_send_long_data                               | 0                                                |
| Com_truncate                                          | 0                                                |
| Com_uninstall_component                               | 0                                                |
| Com_uninstall_plugin                                  | 0                                                |
| Com_unlock_instance                                   | 0                                                |
| Com_unlock_tables                                     | 0                                                |
| Com_update                                            | 255438                                           |
| Com_update_multi                                      | 0                                                |
| Com_xa_commit                                         | 0                                                |
| Com_xa_end                                            | 0                                                |
| Com_xa_prepare                                        | 0                                                |
| Com_xa_recover                                        | 0                                                |
| Com_xa_rollback                                       | 0                                                |
| Com_xa_start                                          | 0                                                |
| Com_stmt_reprepare                                    | 0                                                |
| Connection_errors_accept                              | 0                                                |
| Connection_errors_internal                            | 0                                                |
| Connection_errors_max_connections                     | 0                                                |
| Connection_errors_peer_address                        | 0                                                |
| Connection_errors_select                              | 0                                                |
| Connection_errors_tcpwrap                             | 0                                                |
| Connections                                           | 4243                                             |
| Created_tmp_disk_tables                               | 0                                                |
| Created_tmp_files                                     | 6                                                |
| Created_tmp_tables                                    | 5828                                             |
| Current_tls_ca                                        | ca.pem                                           |
| Current_tls_capath                                    |                                                  |
| Current_tls_cert                                      | server-cert.pem                                  |
| Current_tls_cipher                                    |                                                  |
| Current_tls_ciphersuites                              |                                                  |
| Current_tls_crl                                       |                                                  |
| Current_tls_crlpath                                   |                                                  |
| Current_tls_key                                       | server-key.pem                                   |
| Current_tls_version                                   | TLSv1,TLSv1.1,TLSv1.2,TLSv1.3                    |
| Delayed_errors                                        | 0                                                |
| Delayed_insert_threads                                | 0                                                |
| Delayed_writes                                        | 0                                                |
| Error_log_buffered_bytes                              | 190632                                           |
| Error_log_buffered_events                             | 976                                              |
| Error_log_expired_events                              | 0                                                |
| Error_log_latest_write                                | 1619186917346423                                 |
| Flush_commands                                        | 3                                                |
| Handler_commit                                        | 1775955                                          |
| Handler_delete                                        | 4818                                             |
| Handler_discover                                      | 0                                                |
| Handler_external_lock                                 | 1956431                                          |
| Handler_mrr_init                                      | 0                                                |
| Handler_prepare                                       | 1112840                                          |
| Handler_read_first                                    | 8751                                             |
| Handler_read_key                                      | 2297449                                          |
| Handler_read_last                                     | 0                                                |
| Handler_read_next                                     | 13117203                                         |
| Handler_read_prev                                     | 0                                                |
| Handler_read_rnd                                      | 317189                                           |
| Handler_read_rnd_next                                 | 33103536                                         |
| Handler_rollback                                      | 1                                                |
| Handler_savepoint                                     | 0                                                |
| Handler_savepoint_rollback                            | 0                                                |
| Handler_update                                        | 519454                                           |
| Handler_write                                         | 46481161                                         |
| Innodb_buffer_pool_dump_status                        | Dumping of buffer pool not started               |
| Innodb_buffer_pool_load_status                        | Buffer pool(s) load completed at 210423 14:48:00 |
| Innodb_buffer_pool_resize_status                      |                                                  |
| Innodb_buffer_pool_pages_data                         | 554030                                           |
| Innodb_buffer_pool_bytes_data                         | 9077227520                                       |
| Innodb_buffer_pool_pages_dirty                        | 16                                               |
| Innodb_buffer_pool_bytes_dirty                        | 262144                                           |
| Innodb_buffer_pool_pages_flushed                      | 3093797                                          |
| Innodb_buffer_pool_pages_free                         | 35575                                            |
| Innodb_buffer_pool_pages_misc                         | 219                                              |
| Innodb_buffer_pool_pages_total                        | 589824                                           |
| Innodb_buffer_pool_read_ahead_rnd                     | 0                                                |
| Innodb_buffer_pool_read_ahead                         | 146938                                           |
| Innodb_buffer_pool_read_ahead_evicted                 | 0                                                |
| Innodb_buffer_pool_read_requests                      | 215419387                                        |
| Innodb_buffer_pool_reads                              | 36377                                            |
| Innodb_buffer_pool_wait_free                          | 0                                                |
| Innodb_buffer_pool_write_requests                     | 100213453                                        |
| Innodb_data_fsyncs                                    | 2081533                                          |
| Innodb_data_pending_fsyncs                            | 0                                                |
| Innodb_data_pending_reads                             | 0                                                |
| Innodb_data_pending_writes                            | 0                                                |
| Innodb_data_read                                      | 3003634688                                       |
| Innodb_data_reads                                     | 183411                                           |
| Innodb_data_writes                                    | 11027496                                         |
| Innodb_data_written                                   | 66822321664                                      |
| Innodb_dblwr_pages_written                            | 3093656                                          |
| Innodb_dblwr_writes                                   | 3093656                                          |
| Innodb_log_waits                                      | 0                                                |
| Innodb_log_write_requests                             | 93183297                                         |
| Innodb_log_writes                                     | 4359486                                          |
| Innodb_os_log_fsyncs                                  | 2078108                                          |
| Innodb_os_log_pending_fsyncs                          | 0                                                |
| Innodb_os_log_pending_writes                          | 0                                                |
| Innodb_os_log_written                                 | 9768110080                                       |
| Innodb_page_size                                      | 16384                                            |
| Innodb_pages_created                                  | 648890                                           |
| Innodb_pages_read                                     | 183322                                           |
| Innodb_pages_written                                  | 3315665                                          |
| Innodb_redo_log_enabled                               | ON                                               |
| Innodb_row_lock_current_waits                         | 0                                                |
| Innodb_row_lock_time                                  | 0                                                |
| Innodb_row_lock_time_avg                              | 0                                                |
| Innodb_row_lock_time_max                              | 0                                                |
| Innodb_row_lock_waits                                 | 0                                                |
| Innodb_rows_deleted                                   | 4458                                             |
| Innodb_rows_inserted                                  | 44314559                                         |
| Innodb_rows_read                                      | 42011453                                         |
| Innodb_rows_updated                                   | 258596                                           |
| Innodb_system_rows_deleted                            | 221280                                           |
| Innodb_system_rows_inserted                           | 221272                                           |
| Innodb_system_rows_read                               | 2035872                                          |
| Innodb_system_rows_updated                            | 265286                                           |
| Innodb_sampled_pages_read                             | 0                                                |
| Innodb_sampled_pages_skipped                          | 0                                                |
| Innodb_num_open_files                                 | 50                                               |
| Innodb_truncated_status_writes                        | 0                                                |
| Innodb_undo_tablespaces_total                         | 2                                                |
| Innodb_undo_tablespaces_implicit                      | 2                                                |
| Innodb_undo_tablespaces_explicit                      | 0                                                |
| Innodb_undo_tablespaces_active                        | 2                                                |
| Key_blocks_not_flushed                                | 0                                                |
| Key_blocks_unused                                     | 6698                                             |
| Key_blocks_used                                       | 0                                                |
| Key_read_requests                                     | 0                                                |
| Key_reads                                             | 0                                                |
| Key_write_requests                                    | 0                                                |
| Key_writes                                            | 0                                                |
| Locked_connects                                       | 0                                                |
| Max_execution_time_exceeded                           | 0                                                |
| Max_execution_time_set                                | 0                                                |
| Max_execution_time_set_failed                         | 0                                                |
| Max_used_connections                                  | 19                                               |
| Max_used_connections_time                             | 2021-04-24 00:05:42                              |
| Mysqlx_aborted_clients                                | 0                                                |
| Mysqlx_address                                        | ::                                               |
| Mysqlx_bytes_received                                 | 1160                                             |
| Mysqlx_bytes_received_compressed_payload              | 0                                                |
| Mysqlx_bytes_received_uncompressed_frame              | 0                                                |
| Mysqlx_bytes_sent                                     | 8261                                             |
| Mysqlx_bytes_sent_compressed_payload                  | 7412                                             |
| Mysqlx_bytes_sent_uncompressed_frame                  | 36814                                            |
| Mysqlx_compression_algorithm                          | DEFLATE_STREAM                                   |
| Mysqlx_compression_level                              | 3                                                |
| Mysqlx_connection_accept_errors                       | 0                                                |
| Mysqlx_connection_errors                              | 0                                                |
| Mysqlx_connections_accepted                           | 1                                                |
| Mysqlx_connections_closed                             | 0                                                |
| Mysqlx_connections_rejected                           | 0                                                |
| Mysqlx_crud_create_view                               | 0                                                |
| Mysqlx_crud_delete                                    | 0                                                |
| Mysqlx_crud_drop_view                                 | 0                                                |
| Mysqlx_crud_find                                      | 0                                                |
| Mysqlx_crud_insert                                    | 0                                                |
| Mysqlx_crud_modify_view                               | 0                                                |
| Mysqlx_crud_update                                    | 0                                                |
| Mysqlx_cursor_close                                   | 0                                                |
| Mysqlx_cursor_fetch                                   | 0                                                |
| Mysqlx_cursor_open                                    | 0                                                |
| Mysqlx_errors_sent                                    | 0                                                |
| Mysqlx_errors_unknown_message_type                    | 0                                                |
| Mysqlx_expect_close                                   | 0                                                |
| Mysqlx_expect_open                                    | 0                                                |
| Mysqlx_init_error                                     | 0                                                |
| Mysqlx_messages_sent                                  | 1022                                             |
| Mysqlx_notice_global_sent                             | 1                                                |
| Mysqlx_notice_other_sent                              | 11                                               |
| Mysqlx_notice_warning_sent                            | 0                                                |
| Mysqlx_notified_by_group_replication                  | 17                                               |
| Mysqlx_port                                           | 33060                                            |
| Mysqlx_prep_deallocate                                | 0                                                |
| Mysqlx_prep_execute                                   | 0                                                |
| Mysqlx_prep_prepare                                   | 0                                                |
| Mysqlx_rows_sent                                      | 966                                              |
| Mysqlx_sessions                                       | 1                                                |
| Mysqlx_sessions_accepted                              | 1                                                |
| Mysqlx_sessions_closed                                | 0                                                |
| Mysqlx_sessions_fatal_error                           | 0                                                |
| Mysqlx_sessions_killed                                | 0                                                |
| Mysqlx_sessions_rejected                              | 0                                                |
| Mysqlx_socket                                         | /var/run/mysqld/mysqlx.sock                      |
| Mysqlx_ssl_accepts                                    | 1                                                |
| Mysqlx_ssl_active                                     | ON                                               |
| Mysqlx_ssl_cipher                                     | TLS_AES_256_GCM_SHA384                           |
| Mysqlx_ssl_ctx_verify_depth                           | 18446744073709551615                             |
| Mysqlx_ssl_ctx_verify_mode                            | 5                                                |
| Mysqlx_ssl_finished_accepts                           | 1                                                |
| Mysqlx_ssl_server_not_after                           | Jan 13 14:51:25 2029 GMT                         |
| Mysqlx_ssl_server_not_before                          | Jan 16 14:51:25 2019 GMT                         |
| Mysqlx_ssl_verify_depth                               | 18446744073709551615                             |
| Mysqlx_ssl_verify_mode                                | 5                                                |
| Mysqlx_ssl_version                                    | TLSv1.3                                          |
| Mysqlx_stmt_create_collection                         | 0                                                |
| Mysqlx_stmt_create_collection_index                   | 0                                                |
| Mysqlx_stmt_disable_notices                           | 0                                                |
| Mysqlx_stmt_drop_collection                           | 0                                                |
| Mysqlx_stmt_drop_collection_index                     | 0                                                |
| Mysqlx_stmt_enable_notices                            | 0                                                |
| Mysqlx_stmt_ensure_collection                         | 0                                                |
| Mysqlx_stmt_execute_mysqlx                            | 0                                                |
| Mysqlx_stmt_execute_sql                               | 11                                               |
| Mysqlx_stmt_execute_xplugin                           | 0                                                |
| Mysqlx_stmt_get_collection_options                    | 0                                                |
| Mysqlx_stmt_kill_client                               | 0                                                |
| Mysqlx_stmt_list_clients                              | 0                                                |
| Mysqlx_stmt_list_notices                              | 0                                                |
| Mysqlx_stmt_list_objects                              | 0                                                |
| Mysqlx_stmt_modify_collection_options                 | 0                                                |
| Mysqlx_stmt_ping                                      | 0                                                |
| Mysqlx_worker_threads                                 | 2                                                |
| Mysqlx_worker_threads_active                          | 1                                                |
| Not_flushed_delayed_rows                              | 0                                                |
| Ongoing_anonymous_transaction_count                   | 0                                                |
| Open_files                                            | 9                                                |
| Open_streams                                          | 0                                                |
| Open_table_definitions                                | 101                                              |
| Open_tables                                           | 655                                              |
| Opened_files                                          | 9                                                |
| Opened_table_definitions                              | 177                                              |
| Opened_tables                                         | 753                                              |
| Performance_schema_accounts_lost                      | 0                                                |
| Performance_schema_cond_classes_lost                  | 0                                                |
| Performance_schema_cond_instances_lost                | 0                                                |
| Performance_schema_digest_lost                        | 0                                                |
| Performance_schema_file_classes_lost                  | 0                                                |
| Performance_schema_file_handles_lost                  | 0                                                |
| Performance_schema_file_instances_lost                | 0                                                |
| Performance_schema_hosts_lost                         | 0                                                |
| Performance_schema_index_stat_lost                    | 0                                                |
| Performance_schema_locker_lost                        | 0                                                |
| Performance_schema_memory_classes_lost                | 0                                                |
| Performance_schema_metadata_lock_lost                 | 0                                                |
| Performance_schema_mutex_classes_lost                 | 0                                                |
| Performance_schema_mutex_instances_lost               | 0                                                |
| Performance_schema_nested_statement_lost              | 0                                                |
| Performance_schema_prepared_statements_lost           | 0                                                |
| Performance_schema_program_lost                       | 0                                                |
| Performance_schema_rwlock_classes_lost                | 0                                                |
| Performance_schema_rwlock_instances_lost              | 0                                                |
| Performance_schema_session_connect_attrs_longest_seen | 244                                              |
| Performance_schema_session_connect_attrs_lost         | 0                                                |
| Performance_schema_socket_classes_lost                | 0                                                |
| Performance_schema_socket_instances_lost              | 0                                                |
| Performance_schema_stage_classes_lost                 | 0                                                |
| Performance_schema_statement_classes_lost             | 0                                                |
| Performance_schema_table_handles_lost                 | 0                                                |
| Performance_schema_table_instances_lost               | 0                                                |
| Performance_schema_table_lock_stat_lost               | 0                                                |
| Performance_schema_thread_classes_lost                | 0                                                |
| Performance_schema_thread_instances_lost              | 0                                                |
| Performance_schema_users_lost                         | 0                                                |
| Prepared_stmt_count                                   | 0                                                |
| Queries                                               | 1378145                                          |
| Questions                                             | 506701                                           |
| Secondary_engine_execution_count                      | 0                                                |
| Select_full_join                                      | 8                                                |
| Select_full_range_join                                | 0                                                |
| Select_range                                          | 7762                                             |
| Select_range_check                                    | 0                                                |
| Select_scan                                           | 16007                                            |
| Slave_open_temp_tables                                | 0                                                |
| Slow_launch_threads                                   | 0                                                |
| Slow_queries                                          | 0                                                |
| Sort_merge_passes                                     | 0                                                |
| Sort_range                                            | 0                                                |
| Sort_rows                                             | 1139446                                          |
| Sort_scan                                             | 4219                                             |
| Ssl_accept_renegotiates                               | 0                                                |
| Ssl_accepts                                           | 2703                                             |
| Ssl_callback_cache_hits                               | 0                                                |
| Ssl_cipher                                            |                                                  |
| Ssl_cipher_list                                       |                                                  |
| Ssl_client_connects                                   | 0                                                |
| Ssl_connect_renegotiates                              | 0                                                |
| Ssl_ctx_verify_depth                                  | 18446744073709551615                             |
| Ssl_ctx_verify_mode                                   | 5                                                |
| Ssl_default_timeout                                   | 0                                                |
| Ssl_finished_accepts                                  | 2703                                             |
| Ssl_finished_connects                                 | 0                                                |
| Ssl_server_not_after                                  | Jan 13 14:51:25 2029 GMT                         |
| Ssl_server_not_before                                 | Jan 16 14:51:25 2019 GMT                         |
| Ssl_session_cache_hits                                | 916                                              |
| Ssl_session_cache_misses                              | 0                                                |
| Ssl_session_cache_mode                                | SERVER                                           |
| Ssl_session_cache_overflows                           | 0                                                |
| Ssl_session_cache_size                                | 128                                              |
| Ssl_session_cache_timeouts                            | 6                                                |
| Ssl_sessions_reused                                   | 0                                                |
| Ssl_used_session_cache_entries                        | 0                                                |
| Ssl_verify_depth                                      | 0                                                |
| Ssl_verify_mode                                       | 0                                                |
| Ssl_version                                           |                                                  |
| Table_locks_immediate                                 | 1864                                             |
| Table_locks_waited                                    | 0                                                |
| Table_open_cache_hits                                 | 977471                                           |
| Table_open_cache_misses                               | 753                                              |
| Table_open_cache_overflows                            | 0                                                |
| Tc_log_max_pages_used                                 | 0                                                |
| Tc_log_page_size                                      | 0                                                |
| Tc_log_page_waits                                     | 0                                                |
| Threads_cached                                        | 1                                                |
| Threads_connected                                     | 16                                               |
| Threads_created                                       | 471                                              |
| Threads_running                                       | 2                                                |
| Uptime                                                | 237389                                           |
| Uptime_since_flush_status                             | 237389                                           |
| group_replication_primary_member                      | dbaff795-9211-11eb-8b85-005056a25b64             |
+-------------------------------------------------------+--------------------------------------------------+


# C) SHOW GLOBAL VARIABLES;
SHOW GLOBAL VARIABLES;
+----------------------------------------------------------+----------------------------------------------+
| Variable_name                                            | Value                                        |
+----------------------------------------------------------+----------------------------------------------+
| activate_all_roles_on_login                              | OFF                                          |
| admin_address                                            |                                              |
| admin_port                                               | 33062                                        |
| admin_ssl_ca                                             |                                              |
| admin_ssl_capath                                         |                                              |
| admin_ssl_cert                                           |                                              |
| admin_ssl_cipher                                         |                                              |
| admin_ssl_crl                                            |                                              |
| admin_ssl_crlpath                                        |                                              |
| admin_ssl_key                                            |                                              |
| admin_tls_ciphersuites                                   |                                              |
| admin_tls_version                                        | TLSv1,TLSv1.1,TLSv1.2,TLSv1.3                |
| auto_generate_certs                                      | ON                                           |
| auto_increment_increment                                 | 1                                            |
| auto_increment_offset                                    | 2                                            |
| autocommit                                               | ON                                           |
| automatic_sp_privileges                                  | ON                                           |
| avoid_temporal_upgrade                                   | OFF                                          |
| back_log                                                 | 151                                          |
| basedir                                                  | /usr/                                        |
| big_tables                                               | OFF                                          |
| bind_address                                             | *                                            |
| binlog_cache_size                                        | 32768                                        |
| binlog_checksum                                          | NONE                                         |
| binlog_direct_non_transactional_updates                  | OFF                                          |
| binlog_encryption                                        | OFF                                          |
| binlog_error_action                                      | ABORT_SERVER                                 |
| binlog_expire_logs_seconds                               | 172800                                       |
| binlog_format                                            | ROW                                          |
| binlog_group_commit_sync_delay                           | 0                                            |
| binlog_group_commit_sync_no_delay_count                  | 0                                            |
| binlog_gtid_simple_recovery                              | ON                                           |
| binlog_max_flush_queue_time                              | 0                                            |
| binlog_order_commits                                     | ON                                           |
| binlog_rotate_encryption_master_key_at_startup           | OFF                                          |
| binlog_row_event_max_size                                | 8192                                         |
| binlog_row_image                                         | FULL                                         |
| binlog_row_metadata                                      | MINIMAL                                      |
| binlog_row_value_options                                 |                                              |
| binlog_rows_query_log_events                             | OFF                                          |
| binlog_stmt_cache_size                                   | 32768                                        |
| binlog_transaction_compression                           | OFF                                          |
| binlog_transaction_compression_level_zstd                | 3                                            |
| binlog_transaction_dependency_history_size               | 25000                                        |
| binlog_transaction_dependency_tracking                   | WRITESET                                     |
| block_encryption_mode                                    | aes-128-ecb                                  |
| bulk_insert_buffer_size                                  | 8388608                                      |
| caching_sha2_password_auto_generate_rsa_keys             | ON                                           |
| caching_sha2_password_digest_rounds                      | 5000                                         |
| caching_sha2_password_private_key_path                   | private_key.pem                              |
| caching_sha2_password_public_key_path                    | public_key.pem                               |
| character_set_client                                     | utf8mb4                                      |
| character_set_connection                                 | utf8mb4                                      |
| character_set_database                                   | utf8mb4                                      |
| character_set_filesystem                                 | binary                                       |
| character_set_results                                    | utf8mb4                                      |
| character_set_server                                     | utf8mb4                                      |
| character_set_system                                     | utf8mb3                                      |
| character_sets_dir                                       | /usr/share/mysql-8.0/charsets/               |
| check_proxy_users                                        | OFF                                          |
| collation_connection                                     | utf8mb4_0900_ai_ci                           |
| collation_database                                       | utf8mb4_0900_ai_ci                           |
| collation_server                                         | utf8mb4_0900_ai_ci                           |
| completion_type                                          | NO_CHAIN                                     |
| concurrent_insert                                        | AUTO                                         |
| connect_timeout                                          | 10                                           |
| core_file                                                | OFF                                          |
| create_admin_listener_thread                             | OFF                                          |
| cte_max_recursion_depth                                  | 1000                                         |
| datadir                                                  | /var/lib/mysql/                              |
| default_authentication_plugin                            | caching_sha2_password                        |
| default_collation_for_utf8mb4                            | utf8mb4_0900_ai_ci                           |
| default_password_lifetime                                | 0                                            |
| default_storage_engine                                   | InnoDB                                       |
| default_table_encryption                                 | OFF                                          |
| default_tmp_storage_engine                               | InnoDB                                       |
| default_week_format                                      | 0                                            |
| delay_key_write                                          | ON                                           |
| delayed_insert_limit                                     | 100                                          |
| delayed_insert_timeout                                   | 300                                          |
| delayed_queue_size                                       | 1000                                         |
| disabled_storage_engines                                 |                                              |
| disconnect_on_expired_password                           | ON                                           |
| div_precision_increment                                  | 4                                            |
| end_markers_in_json                                      | OFF                                          |
| enforce_gtid_consistency                                 | ON                                           |
| eq_range_index_dive_limit                                | 200                                          |
| event_scheduler                                          | ON                                           |
| expire_logs_days                                         | 0                                            |
| explicit_defaults_for_timestamp                          | ON                                           |
| flush                                                    | OFF                                          |
| flush_time                                               | 0                                            |
| foreign_key_checks                                       | ON                                           |
| ft_boolean_syntax                                        | + -><()~*:""&|                               |
| ft_max_word_len                                          | 84                                           |
| ft_min_word_len                                          | 4                                            |
| ft_query_expansion_limit                                 | 20                                           |
| ft_stopword_file                                         | (built-in)                                   |
| general_log                                              | OFF                                          |
| general_log_file                                         | /var/lib/mysql/messitdb04lab.log             |
| generated_random_password_length                         | 20                                           |
| group_concat_max_len                                     | 1024                                         |
| group_replication_advertise_recovery_endpoints           | DEFAULT                                      |
| group_replication_allow_local_lower_version_join         | OFF                                          |
| group_replication_auto_increment_increment               | 7                                            |
| group_replication_autorejoin_tries                       | 3                                            |
| group_replication_bootstrap_group                        | OFF                                          |
| group_replication_clone_threshold                        | 9223372036854775807                          |
| group_replication_communication_debug_options            | GCS_DEBUG_NONE                               |
| group_replication_communication_max_message_size         | 10485760                                     |
| group_replication_components_stop_timeout                | 31536000                                     |
| group_replication_compression_threshold                  | 1000000                                      |
| group_replication_consistency                            | EVENTUAL                                     |
| group_replication_enforce_update_everywhere_checks       | OFF                                          |
| group_replication_exit_state_action                      | READ_ONLY                                    |
| group_replication_flow_control_applier_threshold         | 25000                                        |
| group_replication_flow_control_certifier_threshold       | 25000                                        |
| group_replication_flow_control_hold_percent              | 10                                           |
| group_replication_flow_control_max_quota                 | 0                                            |
| group_replication_flow_control_member_quota_percent      | 0                                            |
| group_replication_flow_control_min_quota                 | 0                                            |
| group_replication_flow_control_min_recovery_quota        | 0                                            |
| group_replication_flow_control_mode                      | QUOTA                                        |
| group_replication_flow_control_period                    | 1                                            |
| group_replication_flow_control_release_percent           | 50                                           |
| group_replication_force_members                          |                                              |
| group_replication_group_name                             | abaeee56-de9b-11e8-b0c7-005056a25b64         |
| group_replication_group_seeds                            | messitdb03lab:33061                          |
| group_replication_gtid_assignment_block_size             | 1000000                                      |
| group_replication_ip_allowlist                           | AUTOMATIC                                    |
| group_replication_ip_whitelist                           | AUTOMATIC                                    |
| group_replication_local_address                          | messitdb04lab:33061                          |
| group_replication_member_expel_timeout                   | 30                                           |
| group_replication_member_weight                          | 25                                           |
| group_replication_message_cache_size                     | 1073741824                                   |
| group_replication_poll_spin_loops                        | 0                                            |
| group_replication_recovery_complete_at                   | TRANSACTIONS_APPLIED                         |
| group_replication_recovery_compression_algorithms        | uncompressed                                 |
| group_replication_recovery_get_public_key                | OFF                                          |
| group_replication_recovery_public_key_path               |                                              |
| group_replication_recovery_reconnect_interval            | 60                                           |
| group_replication_recovery_retry_count                   | 10                                           |
| group_replication_recovery_ssl_ca                        |                                              |
| group_replication_recovery_ssl_capath                    |                                              |
| group_replication_recovery_ssl_cert                      |                                              |
| group_replication_recovery_ssl_cipher                    |                                              |
| group_replication_recovery_ssl_crl                       |                                              |
| group_replication_recovery_ssl_crlpath                   |                                              |
| group_replication_recovery_ssl_key                       |                                              |
| group_replication_recovery_ssl_verify_server_cert        | OFF                                          |
| group_replication_recovery_tls_ciphersuites              |                                              |
| group_replication_recovery_tls_version                   | TLSv1,TLSv1.1,TLSv1.2,TLSv1.3                |
| group_replication_recovery_use_ssl                       | ON                                           |
| group_replication_recovery_zstd_compression_level        | 3                                            |
| group_replication_single_primary_mode                    | ON                                           |
| group_replication_ssl_mode                               | REQUIRED                                     |
| group_replication_start_on_boot                          | ON                                           |
| group_replication_tls_source                             | MYSQL_MAIN                                   |
| group_replication_transaction_size_limit                 | 150000000                                    |
| group_replication_unreachable_majority_timeout           | 0                                            |
| gtid_executed                                            | 7736b8e2-de86-11e8-b0c7-005056a25b64:1-23,
a8ac1b55-ddeb-11e8-9950-005056a21411:1-2375,
abaeee56-de9b-11e8-b0c7-005056a25b64:1-55071588:55845619-56106809:56845619-56847996,
ada2e2b8-6b8a-11e6-901e-005056995595:1-14477,
bd1e2735-de85-11e8-b0c7-005056a25b64:1-16 |
| gtid_executed_compression_period                         | 0                                            |
| gtid_mode                                                | ON                                           |
| gtid_owned                                               |                                              |
| gtid_purged                                              | 7736b8e2-de86-11e8-b0c7-005056a25b64:1-23,
a8ac1b55-ddeb-11e8-9950-005056a21411:1-2375,
abaeee56-de9b-11e8-b0c7-005056a25b64:1-49985924:50906970-51083103,
ada2e2b8-6b8a-11e6-901e-005056995595:1-14477,
bd1e2735-de85-11e8-b0c7-005056a25b64:1-16 |
| have_compress                                            | YES                                          |
| have_dynamic_loading                                     | YES                                          |
| have_geometry                                            | YES                                          |
| have_openssl                                             | YES                                          |
| have_profiling                                           | YES                                          |
| have_query_cache                                         | NO                                           |
| have_rtree_keys                                          | YES                                          |
| have_ssl                                                 | YES                                          |
| have_statement_timeout                                   | YES                                          |
| have_symlink                                             | DISABLED                                     |
| histogram_generation_max_mem_size                        | 20000000                                     |
| host_cache_size                                          | 279                                          |
| hostname                                                 | messitdb04lab                                |
| information_schema_stats_expiry                          | 86400                                        |
| init_connect                                             |                                              |
| init_file                                                |                                              |
| init_slave                                               |                                              |
| innodb_adaptive_flushing                                 | ON                                           |
| innodb_adaptive_flushing_lwm                             | 10                                           |
| innodb_adaptive_hash_index                               | ON                                           |
| innodb_adaptive_hash_index_parts                         | 8                                            |
| innodb_adaptive_max_sleep_delay                          | 150000                                       |
| innodb_api_bk_commit_interval                            | 5                                            |
| innodb_api_disable_rowlock                               | OFF                                          |
| innodb_api_enable_binlog                                 | OFF                                          |
| innodb_api_enable_mdl                                    | OFF                                          |
| innodb_api_trx_level                                     | 0                                            |
| innodb_autoextend_increment                              | 64                                           |
| innodb_autoinc_lock_mode                                 | 2                                            |
| innodb_buffer_pool_chunk_size                            | 134217728                                    |
| innodb_buffer_pool_dump_at_shutdown                      | ON                                           |
| innodb_buffer_pool_dump_now                              | OFF                                          |
| innodb_buffer_pool_dump_pct                              | 25                                           |
| innodb_buffer_pool_filename                              | ib_buffer_pool                               |
| innodb_buffer_pool_in_core_file                          | ON                                           |
| innodb_buffer_pool_instances                             | 8                                            |
| innodb_buffer_pool_load_abort                            | OFF                                          |
| innodb_buffer_pool_load_at_startup                       | ON                                           |
| innodb_buffer_pool_load_now                              | OFF                                          |
| innodb_buffer_pool_size                                  | 9663676416                                   |
| innodb_change_buffer_max_size                            | 25                                           |
| innodb_change_buffering                                  | all                                          |
| innodb_checksum_algorithm                                | crc32                                        |
| innodb_cmp_per_index_enabled                             | OFF                                          |
| innodb_commit_concurrency                                | 0                                            |
| innodb_compression_failure_threshold_pct                 | 5                                            |
| innodb_compression_level                                 | 6                                            |
| innodb_compression_pad_pct_max                           | 50                                           |
| innodb_concurrency_tickets                               | 5000                                         |
| innodb_data_file_path                                    | ibdata1:12M:autoextend                       |
| innodb_data_home_dir                                     |                                              |
| innodb_deadlock_detect                                   | ON                                           |
| innodb_dedicated_server                                  | ON                                           |
| innodb_default_row_format                                | dynamic                                      |
| innodb_directories                                       |                                              |
| innodb_disable_sort_file_cache                           | OFF                                          |
| innodb_doublewrite                                       | ON                                           |
| innodb_doublewrite_batch_size                            | 0                                            |
| innodb_doublewrite_dir                                   |                                              |
| innodb_doublewrite_files                                 | 2                                            |
| innodb_doublewrite_pages                                 | 1                                            |
| innodb_extend_and_initialize                             | ON                                           |
| innodb_fast_shutdown                                     | 1                                            |
| innodb_file_per_table                                    | ON                                           |
| innodb_fill_factor                                       | 100                                          |
| innodb_flush_log_at_timeout                              | 1                                            |
| innodb_flush_log_at_trx_commit                           | 1                                            |
| innodb_flush_method                                      | O_DIRECT_NO_FSYNC                            |
| innodb_flush_neighbors                                   | 0                                            |
| innodb_flush_sync                                        | ON                                           |
| innodb_flushing_avg_loops                                | 30                                           |
| innodb_force_load_corrupted                              | OFF                                          |
| innodb_force_recovery                                    | 0                                            |
| innodb_fsync_threshold                                   | 0                                            |
| innodb_ft_aux_table                                      |                                              |
| innodb_ft_cache_size                                     | 8000000                                      |
| innodb_ft_enable_diag_print                              | OFF                                          |
| innodb_ft_enable_stopword                                | ON                                           |
| innodb_ft_max_token_size                                 | 84                                           |
| innodb_ft_min_token_size                                 | 3                                            |
| innodb_ft_num_word_optimize                              | 2000                                         |
| innodb_ft_result_cache_limit                             | 2000000000                                   |
| innodb_ft_server_stopword_table                          |                                              |
| innodb_ft_sort_pll_degree                                | 2                                            |
| innodb_ft_total_cache_size                               | 640000000                                    |
| innodb_ft_user_stopword_table                            |                                              |
| innodb_idle_flush_pct                                    | 100                                          |
| innodb_io_capacity                                       | 2000                                         |
| innodb_io_capacity_max                                   | 5000                                         |
| innodb_lock_wait_timeout                                 | 50                                           |
| innodb_log_buffer_size                                   | 16777216                                     |
| innodb_log_checksums                                     | ON                                           |
| innodb_log_compressed_pages                              | ON                                           |
| innodb_log_file_size                                     | 1073741824                                   |
| innodb_log_files_in_group                                | 7                                            |
| innodb_log_group_home_dir                                | ./                                           |
| innodb_log_spin_cpu_abs_lwm                              | 80                                           |
| innodb_log_spin_cpu_pct_hwm                              | 50                                           |
| innodb_log_wait_for_flush_spin_hwm                       | 400                                          |
| innodb_log_write_ahead_size                              | 8192                                         |
| innodb_log_writer_threads                                | ON                                           |
| innodb_lru_scan_depth                                    | 1024                                         |
| innodb_max_dirty_pages_pct                               | 90.000000                                    |
| innodb_max_dirty_pages_pct_lwm                           | 10.000000                                    |
| innodb_max_purge_lag                                     | 0                                            |
| innodb_max_purge_lag_delay                               | 0                                            |
| innodb_max_undo_log_size                                 | 1073741824                                   |
| innodb_monitor_disable                                   |                                              |
| innodb_monitor_enable                                    |                                              |
| innodb_monitor_reset                                     |                                              |
| innodb_monitor_reset_all                                 |                                              |
| innodb_numa_interleave                                   | OFF                                          |
| innodb_old_blocks_pct                                    | 37                                           |
| innodb_old_blocks_time                                   | 1000                                         |
| innodb_online_alter_log_max_size                         | 134217728                                    |
| innodb_open_files                                        | 4000                                         |
| innodb_optimize_fulltext_only                            | OFF                                          |
| innodb_page_cleaners                                     | 1                                            |
| innodb_page_size                                         | 16384                                        |
| innodb_parallel_read_threads                             | 4                                            |
| innodb_print_all_deadlocks                               | OFF                                          |
| innodb_print_ddl_logs                                    | OFF                                          |
| innodb_purge_batch_size                                  | 300                                          |
| innodb_purge_rseg_truncate_frequency                     | 128                                          |
| innodb_purge_threads                                     | 1                                            |
| innodb_random_read_ahead                                 | OFF                                          |
| innodb_read_ahead_threshold                              | 56                                           |
| innodb_read_io_threads                                   | 1                                            |
| innodb_read_only                                         | OFF                                          |
| innodb_redo_log_archive_dirs                             |                                              |
| innodb_redo_log_encrypt                                  | OFF                                          |
| innodb_replication_delay                                 | 0                                            |
| innodb_rollback_on_timeout                               | OFF                                          |
| innodb_rollback_segments                                 | 128                                          |
| innodb_sort_buffer_size                                  | 1048576                                      |
| innodb_spin_wait_delay                                   | 6                                            |
| innodb_spin_wait_pause_multiplier                        | 50                                           |
| innodb_stats_auto_recalc                                 | ON                                           |
| innodb_stats_include_delete_marked                       | OFF                                          |
| innodb_stats_method                                      | nulls_equal                                  |
| innodb_stats_on_metadata                                 | OFF                                          |
| innodb_stats_persistent                                  | ON                                           |
| innodb_stats_persistent_sample_pages                     | 20                                           |
| innodb_stats_transient_sample_pages                      | 8                                            |
| innodb_status_output                                     | OFF                                          |
| innodb_status_output_locks                               | OFF                                          |
| innodb_strict_mode                                       | ON                                           |
| innodb_sync_array_size                                   | 1                                            |
| innodb_sync_spin_loops                                   | 30                                           |
| innodb_table_locks                                       | ON                                           |
| innodb_temp_data_file_path                               | ibtmp1:12M:autoextend                        |
| innodb_temp_tablespaces_dir                              | ./#innodb_temp/                              |
| innodb_thread_concurrency                                | 0                                            |
| innodb_thread_sleep_delay                                | 10000                                        |
| innodb_tmpdir                                            |                                              |
| innodb_undo_directory                                    | ./                                           |
| innodb_undo_log_encrypt                                  | OFF                                          |
| innodb_undo_log_truncate                                 | ON                                           |
| innodb_undo_tablespaces                                  | 2                                            |
| innodb_use_native_aio                                    | ON                                           |
| innodb_validate_tablespace_paths                         | ON                                           |
| innodb_version                                           | 8.0.24                                       |
| innodb_write_io_threads                                  | 1                                            |
| interactive_timeout                                      | 28800                                        |
| internal_tmp_mem_storage_engine                          | TempTable                                    |
| join_buffer_size                                         | 262144                                       |
| keep_files_on_create                                     | OFF                                          |
| key_buffer_size                                          | 8388608                                      |
| key_cache_age_threshold                                  | 300                                          |
| key_cache_block_size                                     | 1024                                         |
| key_cache_division_limit                                 | 100                                          |
| keyring_operations                                       | ON                                           |
| large_files_support                                      | ON                                           |
| large_page_size                                          | 0                                            |
| large_pages                                              | OFF                                          |
| lc_messages                                              | en_US                                        |
| lc_messages_dir                                          | /usr/share/mysql-8.0/                        |
| lc_time_names                                            | en_US                                        |
| license                                                  | GPL                                          |
| local_infile                                             | ON                                           |
| lock_wait_timeout                                        | 31536000                                     |
| locked_in_memory                                         | OFF                                          |
| log_bin                                                  | ON                                           |
| log_bin_basename                                         | /var/lib/mysql/binlog                        |
| log_bin_index                                            | /var/lib/mysql/binlog.index                  |
| log_bin_trust_function_creators                          | OFF                                          |
| log_bin_use_v1_row_events                                | OFF                                          |
| log_error                                                | /var/log/mysql/error.log                     |
| log_error_services                                       | log_filter_internal; log_sink_internal       |
| log_error_suppression_list                               |                                              |
| log_error_verbosity                                      | 2                                            |
| log_output                                               | FILE                                         |
| log_queries_not_using_indexes                            | OFF                                          |
| log_raw                                                  | OFF                                          |
| log_slave_updates                                        | ON                                           |
| log_slow_admin_statements                                | OFF                                          |
| log_slow_extra                                           | OFF                                          |
| log_slow_slave_statements                                | OFF                                          |
| log_statements_unsafe_for_binlog                         | ON                                           |
| log_throttle_queries_not_using_indexes                   | 0                                            |
| log_timestamps                                           | UTC                                          |
| long_query_time                                          | 10.000000                                    |
| low_priority_updates                                     | OFF                                          |
| lower_case_file_system                                   | OFF                                          |
| lower_case_table_names                                   | 0                                            |
| mandatory_roles                                          |                                              |
| master_info_repository                                   | TABLE                                        |
| master_verify_checksum                                   | OFF                                          |
| max_allowed_packet                                       | 67108864                                     |
| max_binlog_cache_size                                    | 18446744073709547520                         |
| max_binlog_size                                          | 1073741824                                   |
| max_binlog_stmt_cache_size                               | 18446744073709547520                         |
| max_connect_errors                                       | 100                                          |
| max_connections                                          | 151                                          |
| max_delayed_threads                                      | 20                                           |
| max_digest_length                                        | 1024                                         |
| max_error_count                                          | 1024                                         |
| max_execution_time                                       | 0                                            |
| max_heap_table_size                                      | 16777216                                     |
| max_insert_delayed_threads                               | 20                                           |
| max_join_size                                            | 18446744073709551615                         |
| max_length_for_sort_data                                 | 4096                                         |
| max_points_in_geometry                                   | 65536                                        |
| max_prepared_stmt_count                                  | 16382                                        |
| max_relay_log_size                                       | 0                                            |
| max_seeks_for_key                                        | 18446744073709551615                         |
| max_sort_length                                          | 1024                                         |
| max_sp_recursion_depth                                   | 0                                            |
| max_user_connections                                     | 0                                            |
| max_write_lock_count                                     | 18446744073709551615                         |
| min_examined_row_limit                                   | 0                                            |
| myisam_data_pointer_size                                 | 6                                            |
| myisam_max_sort_file_size                                | 9223372036853727232                          |
| myisam_mmap_size                                         | 18446744073709551615                         |
| myisam_recover_options                                   | OFF                                          |
| myisam_repair_threads                                    | 1                                            |
| myisam_sort_buffer_size                                  | 8388608                                      |
| myisam_stats_method                                      | nulls_unequal                                |
| myisam_use_mmap                                          | OFF                                          |
| mysql_native_password_proxy_users                        | OFF                                          |
| mysqlx_bind_address                                      | *                                            |
| mysqlx_compression_algorithms                            | DEFLATE_STREAM,LZ4_MESSAGE,ZSTD_STREAM       |
| mysqlx_connect_timeout                                   | 30                                           |
| mysqlx_deflate_default_compression_level                 | 3                                            |
| mysqlx_deflate_max_client_compression_level              | 5                                            |
| mysqlx_document_id_unique_prefix                         | 0                                            |
| mysqlx_enable_hello_notice                               | ON                                           |
| mysqlx_idle_worker_thread_timeout                        | 60                                           |
| mysqlx_interactive_timeout                               | 28800                                        |
| mysqlx_lz4_default_compression_level                     | 2                                            |
| mysqlx_lz4_max_client_compression_level                  | 8                                            |
| mysqlx_max_allowed_packet                                | 67108864                                     |
| mysqlx_max_connections                                   | 100                                          |
| mysqlx_min_worker_threads                                | 2                                            |
| mysqlx_port                                              | 33060                                        |
| mysqlx_port_open_timeout                                 | 0                                            |
| mysqlx_read_timeout                                      | 30                                           |
| mysqlx_socket                                            | /var/run/mysqld/mysqlx.sock                  |
| mysqlx_ssl_ca                                            |                                              |
| mysqlx_ssl_capath                                        |                                              |
| mysqlx_ssl_cert                                          |                                              |
| mysqlx_ssl_cipher                                        |                                              |
| mysqlx_ssl_crl                                           |                                              |
| mysqlx_ssl_crlpath                                       |                                              |
| mysqlx_ssl_key                                           |                                              |
| mysqlx_wait_timeout                                      | 28800                                        |
| mysqlx_write_timeout                                     | 60                                           |
| mysqlx_zstd_default_compression_level                    | 3                                            |
| mysqlx_zstd_max_client_compression_level                 | 11                                           |
| net_buffer_length                                        | 16384                                        |
| net_read_timeout                                         | 30                                           |
| net_retry_count                                          | 10                                           |
| net_write_timeout                                        | 60                                           |
| new                                                      | OFF                                          |
| ngram_token_size                                         | 2                                            |
| offline_mode                                             | OFF                                          |
| old                                                      | OFF                                          |
| old_alter_table                                          | OFF                                          |
| open_files_limit                                         | 10000                                        |
| optimizer_prune_level                                    | 1                                            |
| optimizer_search_depth                                   | 62                                           |
| optimizer_switch                                         | index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,duplicateweedout=on,subquery_materialization_cost_based=on,use_index_extensions=on,condition_fanout_filter=on,derived_merge=on,use_invisible_indexes=off,skip_scan=on,hash_join=on,subquery_to_derived=off,prefer_ordering_index=on,hypergraph_optimizer=off,derived_condition_pushdown=on |
| optimizer_trace                                          | enabled=off,one_line=off                     |
| optimizer_trace_features                                 | greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on |
| optimizer_trace_limit                                    | 1                                            |
| optimizer_trace_max_mem_size                             | 1048576                                      |
| optimizer_trace_offset                                   | -1                                           |
| parser_max_mem_size                                      | 18446744073709551615                         |
| partial_revokes                                          | OFF                                          |
| password_history                                         | 0                                            |
| password_require_current                                 | OFF                                          |
| password_reuse_interval                                  | 0                                            |
| performance_schema                                       | ON                                           |
| performance_schema_accounts_size                         | -1                                           |
| performance_schema_digests_size                          | 10000                                        |
| performance_schema_error_size                            | 4890                                         |
| performance_schema_events_stages_history_long_size       | 10000                                        |
| performance_schema_events_stages_history_size            | 10                                           |
| performance_schema_events_statements_history_long_size   | 10000                                        |
| performance_schema_events_statements_history_size        | 10                                           |
| performance_schema_events_transactions_history_long_size | 10000                                        |
| performance_schema_events_transactions_history_size      | 10                                           |
| performance_schema_events_waits_history_long_size        | 10000                                        |
| performance_schema_events_waits_history_size             | 10                                           |
| performance_schema_hosts_size                            | -1                                           |
| performance_schema_max_cond_classes                      | 100                                          |
| performance_schema_max_cond_instances                    | -1                                           |
| performance_schema_max_digest_length                     | 1024                                         |
| performance_schema_max_digest_sample_age                 | 60                                           |
| performance_schema_max_file_classes                      | 80                                           |
| performance_schema_max_file_handles                      | 32768                                        |
| performance_schema_max_file_instances                    | -1                                           |
| performance_schema_max_index_stat                        | -1                                           |
| performance_schema_max_memory_classes                    | 450                                          |
| performance_schema_max_metadata_locks                    | -1                                           |
| performance_schema_max_mutex_classes                     | 300                                          |
| performance_schema_max_mutex_instances                   | -1                                           |
| performance_schema_max_prepared_statements_instances     | -1                                           |
| performance_schema_max_program_instances                 | -1                                           |
| performance_schema_max_rwlock_classes                    | 60                                           |
| performance_schema_max_rwlock_instances                  | -1                                           |
| performance_schema_max_socket_classes                    | 10                                           |
| performance_schema_max_socket_instances                  | -1                                           |
| performance_schema_max_sql_text_length                   | 1024                                         |
| performance_schema_max_stage_classes                     | 175                                          |
| performance_schema_max_statement_classes                 | 218                                          |
| performance_schema_max_statement_stack                   | 10                                           |
| performance_schema_max_table_handles                     | -1                                           |
| performance_schema_max_table_instances                   | -1                                           |
| performance_schema_max_table_lock_stat                   | -1                                           |
| performance_schema_max_thread_classes                    | 100                                          |
| performance_schema_max_thread_instances                  | -1                                           |
| performance_schema_session_connect_attrs_size            | 512                                          |
| performance_schema_setup_actors_size                     | -1                                           |
| performance_schema_setup_objects_size                    | -1                                           |
| performance_schema_show_processlist                      | OFF                                          |
| performance_schema_users_size                            | -1                                           |
| persist_only_admin_x509_subject                          |                                              |
| persisted_globals_load                                   | ON                                           |
| pid_file                                                 | /run/mysqld/mysqld.pid                       |
| plugin_dir                                               | /usr/lib/mysql/plugin/                       |
| port                                                     | 3306                                         |
| preload_buffer_size                                      | 32768                                        |
| print_identified_with_as_hex                             | OFF                                          |
| profiling                                                | OFF                                          |
| profiling_history_size                                   | 15                                           |
| protocol_compression_algorithms                          | zlib,zstd,uncompressed                       |
| protocol_version                                         | 10                                           |
| query_alloc_block_size                                   | 8192                                         |
| query_prealloc_size                                      | 8192                                         |
| range_alloc_block_size                                   | 4096                                         |
| range_optimizer_max_mem_size                             | 8388608                                      |
| rbr_exec_mode                                            | STRICT                                       |
| read_buffer_size                                         | 131072                                       |
| read_only                                                | ON                                           |
| read_rnd_buffer_size                                     | 262144                                       |
| regexp_stack_limit                                       | 8000000                                      |
| regexp_time_limit                                        | 32                                           |
| relay_log                                                | messitdb04lab-relay-bin                      |
| relay_log_basename                                       | /var/lib/mysql/messitdb04lab-relay-bin       |
| relay_log_index                                          | /var/lib/mysql/messitdb04lab-relay-bin.index |
| relay_log_info_file                                      | relay-log.info                               |
| relay_log_info_repository                                | TABLE                                        |
| relay_log_purge                                          | ON                                           |
| relay_log_recovery                                       | OFF                                          |
| relay_log_space_limit                                    | 0                                            |
| replication_optimize_for_static_plugin_config            | OFF                                          |
| replication_sender_observe_commit_only                   | OFF                                          |
| report_host                                              |                                              |
| report_password                                          |                                              |
| report_port                                              | 3306                                         |
| report_user                                              |                                              |
| require_secure_transport                                 | OFF                                          |
| rpl_read_size                                            | 8192                                         |
| rpl_stop_slave_timeout                                   | 31536000                                     |
| schema_definition_cache                                  | 256                                          |
| secondary_engine_cost_threshold                          | 100000.000000                                |
| secure_file_priv                                         | /var/lib/mysql-files/                        |
| select_into_buffer_size                                  | 131072                                       |
| select_into_disk_sync                                    | OFF                                          |
| select_into_disk_sync_delay                              | 0                                            |
| server_id                                                | 730035437                                    |
| server_id_bits                                           | 32                                           |
| server_uuid                                              | 326ad0f6-199e-11e9-8ad1-005056a21411         |
| session_track_gtids                                      | OFF                                          |
| session_track_schema                                     | ON                                           |
| session_track_state_change                               | OFF                                          |
| session_track_system_variables                           | time_zone,autocommit,character_set_client,character_set_results,character_set_connection |
| session_track_transaction_info                           | OFF                                          |
| sha256_password_auto_generate_rsa_keys                   | ON                                           |
| sha256_password_private_key_path                         | private_key.pem                              |
| sha256_password_proxy_users                              | OFF                                          |
| sha256_password_public_key_path                          | public_key.pem                               |
| show_create_table_verbosity                              | OFF                                          |
| show_old_temporals                                       | OFF                                          |
| skip_external_locking                                    | ON                                           |
| skip_name_resolve                                        | OFF                                          |
| skip_networking                                          | OFF                                          |
| skip_show_database                                       | OFF                                          |
| skip_slave_start                                         | OFF                                          |
| slave_allow_batching                                     | OFF                                          |
| slave_checkpoint_group                                   | 512                                          |
| slave_checkpoint_period                                  | 300                                          |
| slave_compressed_protocol                                | OFF                                          |
| slave_exec_mode                                          | STRICT                                       |
| slave_load_tmpdir                                        | /tmp                                         |
| slave_max_allowed_packet                                 | 1073741824                                   |
| slave_net_timeout                                        | 60                                           |
| slave_parallel_type                                      | LOGICAL_CLOCK                                |
| slave_parallel_workers                                   | 0                                            |
| slave_pending_jobs_size_max                              | 134217728                                    |
| slave_preserve_commit_order                              | ON                                           |
| slave_rows_search_algorithms                             | INDEX_SCAN,HASH_SCAN                         |
| slave_skip_errors                                        | OFF                                          |
| slave_sql_verify_checksum                                | ON                                           |
| slave_transaction_retries                                | 10                                           |
| slave_type_conversions                                   |                                              |
| slow_launch_time                                         | 2                                            |
| slow_query_log                                           | OFF                                          |
| slow_query_log_file                                      | /var/lib/mysql/messitdb04lab-slow.log        |
| socket                                                   | /run/mysqld/mysqld.sock                      |
| sort_buffer_size                                         | 262144                                       |
| sql_auto_is_null                                         | OFF                                          |
| sql_big_selects                                          | ON                                           |
| sql_buffer_result                                        | OFF                                          |
| sql_log_off                                              | OFF                                          |
| sql_mode                                                 | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION |
| sql_notes                                                | ON                                           |
| sql_quote_show_create                                    | ON                                           |
| sql_require_primary_key                                  | OFF                                          |
| sql_safe_updates                                         | OFF                                          |
| sql_select_limit                                         | 18446744073709551615                         |
| sql_slave_skip_counter                                   | 0                                            |
| sql_warnings                                             | OFF                                          |
| ssl_ca                                                   | ca.pem                                       |
| ssl_capath                                               |                                              |
| ssl_cert                                                 | server-cert.pem                              |
| ssl_cipher                                               |                                              |
| ssl_crl                                                  |                                              |
| ssl_crlpath                                              |                                              |
| ssl_fips_mode                                            | OFF                                          |
| ssl_key                                                  | server-key.pem                               |
| stored_program_cache                                     | 256                                          |
| stored_program_definition_cache                          | 256                                          |
| super_read_only                                          | ON                                           |
| sync_binlog                                              | 1                                            |
| sync_master_info                                         | 10000                                        |
| sync_relay_log                                           | 10000                                        |
| sync_relay_log_info                                      | 10000                                        |
| system_time_zone                                         | CEST                                         |
| table_definition_cache                                   | 2000                                         |
| table_encryption_privilege_check                         | OFF                                          |
| table_open_cache                                         | 4000                                         |
| table_open_cache_instances                               | 16                                           |
| tablespace_definition_cache                              | 256                                          |
| temptable_max_mmap                                       | 1073741824                                   |
| temptable_max_ram                                        | 1073741824                                   |
| temptable_use_mmap                                       | ON                                           |
| thread_cache_size                                        | 9                                            |
| thread_handling                                          | one-thread-per-connection                    |
| thread_stack                                             | 286720                                       |
| time_zone                                                | SYSTEM                                       |
| tls_ciphersuites                                         |                                              |
| tls_version                                              | TLSv1,TLSv1.1,TLSv1.2,TLSv1.3                |
| tmp_table_size                                           | 16777216                                     |
| tmpdir                                                   | /tmp                                         |
| transaction_alloc_block_size                             | 8192                                         |
| transaction_isolation                                    | REPEATABLE-READ                              |
| transaction_prealloc_size                                | 4096                                         |
| transaction_read_only                                    | OFF                                          |
| transaction_write_set_extraction                         | XXHASH64                                     |
| unique_checks                                            | ON                                           |
| updatable_views_with_limit                               | YES                                          |
| version                                                  | 8.0.24                                       |
| version_comment                                          | MySQL Community Server - GPL                 |
| version_compile_machine                                  | x86_64                                       |
| version_compile_os                                       | Linux                                        |
| version_compile_zlib                                     | 1.2.11                                       |
| wait_timeout                                             | 28800                                        |
| windowing_use_high_precision                             | ON                                           |
+----------------------------------------------------------+----------------------------------------------+



# D) SHOW FULL PROCESSLIST;
SHOW FULL PROCESSLIST;
+------+-----------------+-------------------+----------+---------+--------+--------------------------------------------------------+----------------------------------+
| Id   | User            | Host              | db       | Command | Time   | State                                                  | Info                             |
+------+-----------------+-------------------+----------+---------+--------+--------------------------------------------------------+----------------------------------+
|    6 | event_scheduler | localhost         | NULL     | Daemon  | 237835 | Waiting on empty queue                                 | NULL                             |
|   10 | system user     |                   | NULL     | Connect | 237835 | waiting for handler commit                             | Group replication applier module |
|   13 | system user     |                   | NULL     | Query   |      0 | Slave has read all relay log; waiting for more updates | NULL                             |
|  102 | ServiceA        | 172.19.74.4:56696 | smsc_1_0 | Sleep   |      2 |                                                        | NULL                             |
|  106 | ServiceB        | 172.19.74.1:49570 | smsc_1_0 | Sleep   |     21 |                                                        | NULL                             |
| 4227 | root            | localhost         | NULL     | Sleep   |    345 |                                                        | NULL                             |
| 4240 | icroot          | localhost:34614   | NULL     | Query   |      0 | init                                                   | PLUGIN: SHOW FULL PROCESSLIST    |
| 4244 | ServiceC        | 172.19.74.1:53730 | smsc_1_0 | Sleep   |    237 |                                                        | NULL                             |
| 4245 | ServiceD        | 172.19.74.1:54126 | smsc_1_0 | Sleep   |     68 |                                                        | NULL                             |
+------+-----------------+-------------------+----------+---------+--------+--------------------------------------------------------+----------------------------------+


# E) Htop
  1  [||                                                                                                                                                             0.7%]   4  [||                                                                                                                                                             0.7%]
  2  [                                                                                                                                                               0.0%]   5  [                                                                                                                                                               0.0%]
  3  [                                                                                                                                                               0.0%]   6  [                                                                                                                                                               0.0%]
  Mem[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||11.3G/11.7G]   Tasks: 35, 85 thr; 1 running
  Swp[|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||                                    733M/1024M]   Load average: 0.28 0.13 0.04
                                                                                                                                                                             Uptime: 17 days, 17:00:09

    PID USER      PRI  NI  VIRT   RES   SHR S CPU% MEM%   TIME+  Command
 121927 mysql      20   0 12.0G 11.0G  9696 S  1.3 93.7  1h06:06 /usr/sbin/mysqld
 127983 gmadmin    20   0  7752  6036  3060 R  1.3  0.0  0:00.16 htop
 121946 mysql      20   0 12.0G 11.0G  9696 S  0.7 93.7  6:04.84 /usr/sbin/mysqld
 121940 mysql      20   0 12.0G 11.0G  9696 S  0.7 93.7  1:28.38 /usr/sbin/mysqld
 121945 mysql      20   0 12.0G 11.0G  9696 S  0.7 93.7  3:59.94 /usr/sbin/mysqld
 121973 mysql      20   0 12.0G 11.0G  9696 S  0.7 93.7 17:44.84 /usr/sbin/mysqld
 121975 mysql      20   0 12.0G 11.0G  9696 S  0.0 93.7  9:32.06 /usr/sbin/mysqld
    664 root       20   0  159M  1172   408 S  0.0  0.0 20:31.96 /usr/bin/vmtoolsd
 121944 mysql      20   0 12.0G 11.0G  9696 S  0.0 93.7  5:46.81 /usr/sbin/mysqld
      1 root       20   0  167M  6736  3980 S  0.0  0.1  0:31.06 /sbin/init maybe-ubiquity
    441 root       19  -1  198M 21872 21424 S  0.0  0.2  0:24.38 /lib/systemd/systemd-journald
    475 root       20   0 22396  1696  1296 S  0.0  0.0  0:07.66 /lib/systemd/systemd-udevd
    663 root       20   0 47764    16     0 S  0.0  0.0  0:00.01 /usr/bin/VGAuthService
    690 root       20   0  159M  1172   408 S  0.0  0.0  0:35.75 /usr/bin/vmtoolsd
    716 systemd-n  20   0 18596   164     0 S  0.0  0.0  0:05.12 /lib/systemd/systemd-networkd
    723 systemd-r  20   0 24088   600   376 S  0.0  0.0  0:02.90 /lib/systemd/systemd-resolved
    789 root       20   0  230M  2696  2160 S  0.0  0.0  0:25.56 /usr/lib/accountsservice/accounts-daemon
    844 root       20   0  230M  2696  2160 S  0.0  0.0  0:00.04 /usr/lib/accountsservice/accounts-daemon
    737 root       20   0  230M  2696  2160 S  0.0  0.0  0:25.74 /usr/lib/accountsservice/accounts-daemon
    751 root       20   0  7036   532   428 S  0.0  0.0  0:02.36 /usr/sbin/cron -f
    754 messagebu  20   0  7872  2084  1436 S  0.0  0.0  0:02.38 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
    784 root       20   0 81968   564   428 S  0.0  0.0  0:00.00 /usr/sbin/irqbalance --foreground
    760 root       20   0 81968   564   428 S  0.0  0.0  0:55.39 /usr/sbin/irqbalance --foreground
    785 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.36 /usr/bin/lxcfs /var/lib/lxcfs
    786 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.36 /usr/bin/lxcfs /var/lib/lxcfs
  30357 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.35 /usr/bin/lxcfs /var/lib/lxcfs
  47882 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.33 /usr/bin/lxcfs /var/lib/lxcfs
  71401 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.17 /usr/bin/lxcfs /var/lib/lxcfs
  71402 root       20   0  436M  1776  1160 S  0.0  0.0  0:00.19 /usr/bin/lxcfs /var/lib/lxcfs
    762 root       20   0  436M  1776  1160 S  0.0  0.0  0:01.81 /usr/bin/lxcfs /var/lib/lxcfs
    764 root       20   0 29292    16     4 S  0.0  0.0  0:00.10 /usr/bin/python3 /usr/bin/networkd-dispatcher --run-startup-triggers
    865 root       20   0 1488M 18256  5328 S  0.0  0.1  0:14.57 /usr/lib/snapd/snapd
    866 root       20   0 1488M 18256  5328 S  0.0  0.1  0:14.02 /usr/lib/snapd/snapd
    867 root       20   0 1488M 18256  5328 S  0.0  0.1  0:00.00 /usr/lib/snapd/snapd
    868 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.76 /usr/lib/snapd/snapd
    869 root       20   0 1488M 18256  5328 S  0.0  0.1  0:00.00 /usr/lib/snapd/snapd
    872 root       20   0 1488M 18256  5328 S  0.0  0.1  0:07.43 /usr/lib/snapd/snapd
    873 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.89 /usr/lib/snapd/snapd
    875 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.40 /usr/lib/snapd/snapd
    876 root       20   0 1488M 18256  5328 S  0.0  0.1  0:00.01 /usr/lib/snapd/snapd
    877 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.18 /usr/lib/snapd/snapd
    878 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.72 /usr/lib/snapd/snapd
    921 root       20   0 1488M 18256  5328 S  0.0  0.1  0:00.00 /usr/lib/snapd/snapd
    922 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.80 /usr/lib/snapd/snapd
    923 root       20   0 1488M 18256  5328 S  0.0  0.1  0:12.27 /usr/lib/snapd/snapd
    924 root       20   0 1488M 18256  5328 S  0.0  0.1  0:06.59 /usr/lib/snapd/snapd
    925 root       20   0 1488M 18256  5328 S  0.0  0.1  0:15.97 /usr/lib/snapd/snapd
    927 root       20   0 1488M 18256  5328 S  0.0  0.1  0:00.00 /usr/lib/snapd/snapd
    990 root       20   0 1488M 18256  5328 S  0.0  0.1  0:07.85 /usr/lib/snapd/snapd
  49459 root       20   0 1488M 18256  5328 S  0.0  0.1  0:03.78 /usr/lib/snapd/snapd
 108505 root       20   0 1488M 18256  5328 S  0.0  0.1  0:02.85 /usr/lib/snapd/snapd
    770 root       20   0 1488M 18256  5328 S  0.0  0.1  2:06.14 /usr/lib/snapd/snapd
    780 root       20   0 17668  2884  2456 S  0.0  0.0  0:03.59 /lib/systemd/systemd-logind
    783 daemon     20   0  4016    12     0 S  0.0  0.0  0:00.03 /usr/sbin/atd -f
    792 root       20   0  6052    12     0 S  0.0  0.0  0:00.00 /sbin/agetty -o -p -- \u --noclear tty1 linux
    827 root       20   0 12284  1504  1352 S  0.0  0.0  0:00.04 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
    851 root       20   0  105M     0     0 S  0.0  0.0  0:00.00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal
    845 root       20   0  105M     0     0 S  0.0  0.0  0:00.08 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal
    853 root       20   0  227M  1188   760 S  0.0  0.0  0:00.00 /usr/lib/policykit-1/polkitd --no-debug
    855 root       20   0  227M  1188   760 S  0.0  0.0  0:00.17 /usr/lib/policykit-1/polkitd --no-debug
    852 root       20   0  227M  1188   760 S  0.0  0.0  0:00.25 /usr/lib/policykit-1/polkitd --no-debug

# F) Ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 47575
max locked memory       (kbytes, -l) 65536
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 47575
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited