[mysqld]
log-error=/var/lib/mysql/animexunknown.iamhero.net.err
default-storage-engine = MyISAM
innodb_file_per_table = 1
performance-schema = 1
performance_schema_events_waits_history_size = 20
performance_schema_events_waits_history_long_size = 15000
max_allowed_packet = 268435456
local-infile = 0
open_files_limit = 10192
table_open_cache = 24000
table_definition_cache = 1024
max_connections = 500
query_cache_size = 512M
query_cache_type = 0
query_cache_limit = 4M
join_buffer_size = 256.0K
thread_cache_size = 8
table_cache = 8192
tmp_table_size = 16M
max_heap_table_size = 256M
innodb_buffer_pool_size = 15G
innodb_log_file_size = 512M
thread_stack = 128K
key_buffer_size = 1280M

[root@anime src]# perl mysqltuner.pl
 >>  MySQLTuner 1.7.4 - Major Hayden <major@mhtx.net>
 >>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
 >>  Run with '--help' for additional options and output filtering

[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 10.2.9-MariaDB
[OK] Operating on 64-bit architecture

-------- Log file Recommendations ------------------------------------------------------------------
[--] Log file: /var/lib/mysql/animexunknown.iamhero.net.err(1M)
[OK] Log file /var/lib/mysql/animexunknown.iamhero.net.err exists
[OK] Log file /var/lib/mysql/animexunknown.iamhero.net.err is readable.
[OK] Log file /var/lib/mysql/animexunknown.iamhero.net.err is not empty
[OK] Log file /var/lib/mysql/animexunknown.iamhero.net.err is smaller than 32 Mb
[!!] /var/lib/mysql/animexunknown.iamhero.net.err contains 2391 warning(s).
[!!] /var/lib/mysql/animexunknown.iamhero.net.err contains 2293 error(s).
[--] 92 start(s) detected in /var/lib/mysql/animexunknown.iamhero.net.err
[--] 1) 2017-10-21  3:18:26 140421808523392 [Note] /usr/sbin/mysqld: ready for connections.
[--] 2) 2017-10-21  3:08:04 140085739542656 [Note] /usr/sbin/mysqld: ready for connections.
[--] 3) 2017-10-21  2:08:28 140208588351616 [Note] /usr/sbin/mysqld: ready for connections.
[--] 4) 2017-10-19  2:36:44 140705789565056 [Note] /usr/sbin/mysqld: ready for connections.
[--] 5) 2017-10-19  2:36:33 140568863770752 [Note] /usr/sbin/mysqld: ready for connections.
[--] 6) 2017-10-17 19:30:14 140586253817984 [Note] /usr/sbin/mysqld: ready for connections.
[--] 7) 2017-10-17 19:30:04 139620718205056 [Note] /usr/sbin/mysqld: ready for connections.
[--] 8) 2017-10-14 19:51:50 140700734711936 [Note] /usr/sbin/mysqld: ready for connections.
[--] 9) 2017-10-14 19:51:40 139751456983168 [Note] /usr/sbin/mysqld: ready for connections.
[--] 10) 2017-10-04 16:23:04 139651866327168 [Note] /usr/sbin/mysqld: ready for connections.
[--] 91 shutdown(s) detected in /var/lib/mysql/animexunknown.iamhero.net.err
[--] 1) 2017-10-21  3:08:06 140085462673152 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 2) 2017-10-21  3:03:06 140207802783488 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 3) 2017-10-21  2:07:00 140705346029312 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 4) 2017-10-19  2:36:35 140568586901248 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 5) 2017-10-19  2:34:13 140585760294656 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 6) 2017-10-17 19:30:06 139620597221120 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 7) 2017-10-17 19:27:59 140700247639808 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 8) 2017-10-14 19:51:41 139751017780992 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 9) 2017-10-14 19:49:50 139651063711488 [Note] /usr/sbin/mysqld: Shutdown complete
[--] 10) 2017-10-04 16:22:56 140438602782464 [Note] /usr/sbin/mysqld: Shutdown complete

-------- Storage Engine Statistics -----------------------------------------------------------------
[--] Status: +Aria +CSV +InnoDB +MEMORY +MRG_MyISAM +MyISAM +PERFORMANCE_SCHEMA +SEQUENCE
[--] Data in MyISAM tables: 472M (Tables: 89)
[--] Data in InnoDB tables: 4G (Tables: 1295)
[--] Data in MEMORY tables: 2M (Tables: 24)
[OK] Total fragmented tables: 0

-------- Security Recommendations ------------------------------------------------------------------
[OK] There are no anonymous accounts for any database users
[OK] All database users have passwords assigned
[--] There are 612 basic passwords in the list.

-------- CVE Security Recommendations --------------------------------------------------------------
[OK] NO SECURITY CVE FOUND FOR YOUR VERSION

-------- Performance Metrics -----------------------------------------------------------------------
[--] Up for: 13h 17m 8s (6M q [132.711 qps], 293K conn, TX: 269G, RX: 2G)
[--] Reads / Writes: 87% / 13%
[--] Binary logging is disabled
[--] Physical Memory     : 29.3G
[--] Max MySQL memory    : 1.8G
[--] Other process memory: 1.0G
[--] Total buffers: 417.0M global + 2.9M per thread (500 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 446.1M (1.49% of installed RAM)
[OK] Maximum possible memory usage: 1.8G (6.24% of installed RAM)
[OK] Overall possible memory usage with other process is compatible with memory available
[OK] Slow queries: 0% (0/6M)
[OK] Highest usage of available connections: 2% (10/500)
[OK] Aborted connections: 0.04%  (104/293007)
[!!] name resolution is active : a reverse name resolution is made for each new connection and can reduce performance
[!!] Query cache may be disabled by default due to mutex contention.
[!!] Query cache efficiency: 0.0% (0 cached / 4M selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (1 temp sorts / 320K sorts)
[!!] Joins performed without indexes: 506
[!!] Temporary tables created on disk: 98% (218K on disk / 221K total)
[OK] Thread cache hit rate: 99% (10 created / 293K connections)
[OK] Table cache hit rate: 82% (1K open / 1K opened)
[OK] Open file limit used: 0% (107/240K)
[OK] Table locks acquired immediately: 99% (1M immediate / 1M locks)

-------- Performance schema ------------------------------------------------------------------------
[--] Performance schema is disabled.
[--] Memory used by P_S: 0B
[--] Sys schema isn't installed.

-------- ThreadPool Metrics ------------------------------------------------------------------------
[--] ThreadPool stat is enabled.
[--] Thread Pool Size: 6 thread(s).
[--] Using default value is good enough for your version (10.2.9-MariaDB)

-------- MyISAM Metrics ----------------------------------------------------------------------------
[!!] Key buffer used: 31.4% (42M used / 134M cache)
[OK] Key buffer size / total MyISAM indexes: 128.0M/261.0M
[OK] Read Key buffer hit rate: 99.6% (4M cached / 15K reads)
[!!] Write Key buffer hit rate: 56.4% (659K cached / 371K writes)

-------- InnoDB Metrics ----------------------------------------------------------------------------
[--] InnoDB is enabled.
[--] InnoDB Thread Concurrency: 0
[OK] InnoDB File per table is activated
[!!] InnoDB buffer pool / data size: 128.0M/4.1G
[!!] Ratio InnoDB log file size / InnoDB Buffer pool size (75 %): 48.0M * 2/128.0M should be equal 25%
[OK] InnoDB buffer pool instances: 1
[--] Number of InnoDB Buffer Pool Chunk : 1 for 1 Buffer Pool Instance(s)
[OK] Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances
[OK] InnoDB Read buffer efficiency: 99.96% (361634378 hits/ 361761376 total)
[OK] InnoDB Write log efficiency: 91.95% (1527951 hits/ 1661676 total)
[OK] InnoDB log waits: 0.00% (0 waits / 133725 writes)

-------- AriaDB Metrics ----------------------------------------------------------------------------
[--] AriaDB is enabled.
[OK] Aria pagecache size / total Aria indexes: 128.0M/1B
[OK] Aria pagecache hit rate: 98.9% (20M cached / 218K reads)

-------- TokuDB Metrics ----------------------------------------------------------------------------
[--] TokuDB is disabled.

-------- XtraDB Metrics ----------------------------------------------------------------------------
[--] XtraDB is disabled.

-------- RocksDB Metrics ---------------------------------------------------------------------------
[--] RocksDB is disabled.

-------- Spider Metrics ----------------------------------------------------------------------------
[--] Spider is disabled.

-------- Connect Metrics ---------------------------------------------------------------------------
[--] Connect is disabled.

-------- Galera Metrics ----------------------------------------------------------------------------
[--] Galera is disabled.

-------- Replication Metrics -----------------------------------------------------------------------
[--] Galera Synchronous replication: NO
[--] No replication slave(s) for this server.
[--] This is a standalone server.

-------- Recommendations ---------------------------------------------------------------------------
General recommendations:
    Control warning line(s) into /var/lib/mysql/animexunknown.iamhero.net.err file
    Control error line(s) into /var/lib/mysql/animexunknown.iamhero.net.err file
    MySQL started within last 24 hours - recommendations may be inaccurate
    Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1
    Adjust your join queries to always utilize indexes
    When making adjustments, make tmp_table_size/max_heap_table_size equal
    Reduce your SELECT DISTINCT queries which have no LIMIT clause
    Performance should be activated for better diagnostics
    Consider installing Sys schema from https://github.com/mysql/mysql-sys
    Read this before changing innodb_log_file_size and/or innodb_log_files_in_group: bit.ly/2wgkDvS
Variables to adjust:
    query_cache_size (=0)
    query_cache_type (=0)
    query_cache_limit (> 1M, or use smaller result sets)
    join_buffer_size (> 256.0K, or always use indexes with joins)
    tmp_table_size (> 16M)
    max_heap_table_size (> 16M)
    performance_schema = ON enable PFS
    innodb_buffer_pool_size (>= 4G) if possible.
    innodb_log_file_size should be (=16M) if possible, so InnoDB total log files size equals to 25% of buffer pool size.