2018-02-19T12:23:33.870123Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2018-02-19T12:23:33.870208Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
2018-02-19T12:23:34.054128Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2018-02-19T12:23:34.056591Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.21-0ubuntu0.16.04.1) starting as process 13998 ...
2018-02-19T12:23:34.062114Z 0 [Note] InnoDB: PUNCH HOLE support available
2018-02-19T12:23:34.062258Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2018-02-19T12:23:34.062334Z 0 [Note] InnoDB: Uses event mutexes
2018-02-19T12:23:34.062433Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2018-02-19T12:23:34.062503Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.8
2018-02-19T12:23:34.062585Z 0 [Note] InnoDB: Using Linux native AIO
2018-02-19T12:23:34.062992Z 0 [Note] InnoDB: Number of pools: 1
2018-02-19T12:23:34.063230Z 0 [Note] InnoDB: Using CPU crc32 instructions
2018-02-19T12:23:34.065502Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2018-02-19T12:23:34.076188Z 0 [Note] InnoDB: Completed initialization of buffer pool
2018-02-19T12:23:34.079652Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2018-02-19T12:23:34.092182Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2018-02-19T12:23:34.108386Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2018-02-19T12:23:34.108656Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2018-02-19T12:23:34.139068Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2018-02-19T12:23:34.141101Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2018-02-19T12:23:34.141173Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2018-02-19T12:23:34.141530Z 0 [Note] InnoDB: Waiting for purge to start
2018-02-19T12:23:34.191755Z 0 [Note] InnoDB: 5.7.21 started; log sequence number 6269351
2018-02-19T12:23:34.192378Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
2018-02-19T12:23:34.192531Z 0 [Note] Plugin 'FEDERATED' is disabled.
2018-02-19T12:23:34.194122Z 0 [Note] InnoDB: Buffer pool(s) load completed at 180219 13:23:34
2018-02-19T12:23:34.199685Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
2018-02-19T12:23:34.199771Z 0 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306
2018-02-19T12:23:34.199870Z 0 [Note]   - '127.0.0.1' resolves to '127.0.0.1';
2018-02-19T12:23:34.199953Z 0 [Note] Server socket created on IP: '127.0.0.1'.
2018-02-19T12:23:34.208353Z 0 [Note] Event Scheduler: Loaded 0 events
2018-02-19T12:23:34.208591Z 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.7.21-0ubuntu0.16.04.1'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  (Ubuntu)
2018-02-19T12:23:34.879370Z 2 [Note] Access denied for user 'root'@'localhost' (using password: NO)