虚拟机关机后第二天mysql起不来，回想一下我关机前和关机后的操作发现：关机前没关闭mysqld服务就直接init 0了，关机后将虚拟机内存由1G降到724M。笔者保证再也做过别的骚操作了。
2017-09-05 09:19:21 1940 [Note] Plugin 'FEDERATED' is disabled. 2017-09-05 09:19:21 1940 [Note] InnoDB: Using atomics to ref count buffer pool pages 2017-09-05 09:19:21 1940 [Note] InnoDB: The InnoDB memory heap is disabled 2017-09-05 09:19:21 1940 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2017-09-05 09:19:21 1940 [Note] InnoDB: Memory barrier is not used 2017-09-05 09:19:21 1940 [Note] InnoDB: Compressed tables use zlib 1.2.3 2017-09-05 09:19:21 1940 [Note] InnoDB: Using CPU crc32 instructions 2017-09-05 09:19:21 1940 [Note] InnoDB: Initializing buffer pool, size = 128.0M InnoDB: mmap(137363456 bytes) failed; errno 12 2017-09-05 09:19:21 1940 [ERROR] InnoDB: Cannot allocate memory for the buffer pool 2017-09-05 09:19:21 1940 [ERROR] Plugin 'InnoDB' init function returned error. 2017-09-05 09:19:21 1940 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 2017-09-05 09:19:21 1940 [ERROR] Unknown/unsupported storage engine: InnoDB 2017-09-05 09:19:21 1940 [ERROR] Aborting 2017-09-05 09:19:21 1940 [Note] Binlog end 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'partition' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_FIELDS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_INDEXES' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_SYS_TABLES' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_CONFIG' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_DELETED' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_METRICS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMPMEM' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMP_RESET' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_CMP' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_LOCK_WAITS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_LOCKS' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'INNODB_TRX' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'ARCHIVE' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'BLACKHOLE' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'MyISAM' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'MRG_MYISAM' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'CSV' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'MEMORY' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'sha256_password' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'mysql_old_password' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'mysql_native_password' 2017-09-05 09:19:21 1940 [Note] Shutting down plugin 'binlog' 2017-09-05 09:19:21 1940 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete