Mysql сервис останавливается каждый день в 6 утра в EC2

Question

На моем AWS сервере присутствует WordPress вместе с MySQL. И MySQL сервер автоматически останавливается каждые 6 часов утра (большую часть времени). Может кто-нибудь предложить мне решение?

Я предоставляю журнал при остановке.

sudo tail -100 /var/log/mysqld.log

Version: '5.6.47'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL)
2020-03-14 00:32:04 4015 [Note] Plugin 'FEDERATED' is disabled.
2020-03-14 00:32:04 4015 [Note] InnoDB: Using atomics to ref count buffer pool pages
2020-03-14 00:32:04 4015 [Note] InnoDB: The InnoDB memory heap is disabled
2020-03-14 00:32:04 4015 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-03-14 00:32:04 4015 [Note] InnoDB: Memory barrier is not used
2020-03-14 00:32:04 4015 [Note] InnoDB: Compressed tables use zlib 1.2.8
2020-03-14 00:32:04 4015 [Note] InnoDB: Using Linux native AIO
2020-03-14 00:32:04 4015 [Note] InnoDB: Using CPU crc32 instructions
2020-03-14 00:32:04 4015 [Note] InnoDB: Initializing buffer pool, size = 10.0M
InnoDB: mmap(10731520 bytes) failed; errno 12
2020-03-14 00:32:04 4015 [ERROR] InnoDB: Cannot allocate memory for the buffer pool
2020-03-14 00:32:04 4015 [ERROR] Plugin 'InnoDB' init function returned error.
2020-03-14 00:32:04 4015 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2020-03-14 00:32:04 4015 [ERROR] Unknown/unsupported storage engine: InnoDB
2020-03-14 00:32:04 4015 [ERROR] Aborting

2020-03-14 00:32:04 4015 [Note] Binlog end
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'partition'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_METRICS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMPMEM'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_CMP'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_LOCKS'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'INNODB_TRX'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'BLACKHOLE'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'ARCHIVE'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'CSV'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'MRG_MYISAM'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'MEMORY'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'MyISAM'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'sha256_password'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'mysql_old_password'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'mysql_native_password'
2020-03-14 00:32:04 4015 [Note] Shutting down plugin 'binlog'
2020-03-14 00:32:04 4015 [Note] /usr/libexec/mysql56/mysqld: Shutdown complete

Answer 1

Найдите в / var / log / cron задания, которые выполняются в это время дня

Возможно, система делает что-то еще, что исчерпывает память

, если вы не можете остановить запуск cronjob которая вызывает проблему, затем либо измените размер экземпляра, чтобы добавить больше памяти, либо добавьте файл подкачки

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-resize.html

https://aws.amazon.com/premiumsupport/knowledge-center/ec2-memory-swap-file/