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my server went offline and the following error appears in mysql, can anyone help me solve it and put my blog back online
2019-05-24T18:05:26.269059Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000) 2019-05-24T18:05:26.269718Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000) 2019-05-24T18:05:26.573817Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2019-05-24T18:05:26.578381Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.26-0ubuntu0.16.04.1) starting as process 1431 … 2019-05-24T18:05:26.622659Z 0 [Note] InnoDB: PUNCH HOLE support available 2019-05-24T18:05:26.622685Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2019-05-24T18:05:26.622690Z 0 [Note] InnoDB: Uses event mutexes 2019-05-24T18:05:26.622694Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier 2019-05-24T18:05:26.622698Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.8 2019-05-24T18:05:26.622702Z 0 [Note] InnoDB: Using Linux native AIO 2019-05-24T18:05:26.630436Z 0 [Note] InnoDB: Number of pools: 1 2019-05-24T18:05:26.633992Z 0 [Note] InnoDB: Using CPU crc32 instructions 2019-05-24T18:05:26.636553Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M 2019-05-24T18:05:26.668054Z 0 [Note] InnoDB: Completed initialization of buffer pool 2019-05-24T18:05:26.690310Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2019-05-24T18:05:26.743229Z 0 [Note] InnoDB: Highest supported file format is Barracuda. 2019-05-24T18:05:26.770218Z 0 [Note] InnoDB: Log scan progressed past the checkpoint lsn 38722558620 2019-05-24T18:05:26.770244Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 38722558629 2019-05-24T18:05:26.770250Z 0 [Note] InnoDB: Database was not shutdown normally! 2019-05-24T18:05:26.770254Z 0 [Note] InnoDB: Starting crash recovery. 2019-05-24T18:05:27.021937Z 0 [Note] InnoDB: Removed temporary tablespace data file: “ibtmp1” 2019-05-24T18:05:27.021971Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables 2019-05-24T18:05:27.022050Z 0 [Note] InnoDB: Setting file ‘./ibtmp1’ size to 12 MB. Physically writing the file full; Please wait … 2019-05-24T18:05:27.057880Z 0 [Note] InnoDB: File ‘./ibtmp1’ size is now 12 MB. 2019-05-24T18:05:27.059157Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. 2019-05-24T18:05:27.059171Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active. 2019-05-24T18:05:27.059613Z 0 [Note] InnoDB: Waiting for purge to start 2019-05-24T18:05:27.109830Z 0 [Note] InnoDB: 5.7.26 started; log sequence number 38722558629 2019-05-24T18:05:27.110537Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool 2019-05-24T18:05:27.111058Z 0 [Note] Plugin ‘FEDERATED’ is disabled. 2019-05-24T18:05:27.127531Z 0 [Note] InnoDB: Buffer pool(s) load completed at 190524 18:05:27 2019-05-24T18:05:27.129591Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key 2019-05-24T18:05:27.129611Z 0 [Note] Server hostname (bind-address): ‘127.0.0.1’; port: 3306 2019-05-24T18:05:27.129624Z 0 [Note] - ‘127.0.0.1’ resolves to ‘127.0.0.1’; 2019-05-24T18:05:27.129666Z 0 [Note] Server socket created on IP: ‘127.0.0.1’. 2019-05-24T18:05:27.181405Z 0 [Note] Event Scheduler: Loaded 0 events 2019-05-24T18:05:27.181637Z 0 [Note] /usr/sbin/mysqld: ready for connections. Version: ‘5.7.26-0ubuntu0.16.04.1’ socket: ‘/var/run/mysqld/mysqld.sock’ port: 3306 (Ubuntu) 2019-05-24T18:05:27.238013Z 2 [Note] Access denied for user ‘root’@‘localhost’ (using password: NO)
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