mysql 崩溃了

160513 20:44:23 mysqld_safe Number of processes running now: 0
160513 20:44:23 mysqld_safe mysqld restarted
160513 20:44:24 [Note] Plugin 'FEDERATED' is disabled.
160513 20:44:24 InnoDB: The InnoDB memory heap is disabled
160513 20:44:24 InnoDB: Mutexes and rw_locks use GCC atomic builtins
160513 20:44:24 InnoDB: Compressed tables use zlib 1.2.3
160513 20:44:24 InnoDB: Using Linux native AIO
160513 20:44:24 InnoDB: Initializing buffer pool, size = 128.0M
InnoDB: mmap(137363456 bytes) failed; errno 12
160513 20:44:24 InnoDB: Completed initialization of buffer pool
160513 20:44:24 InnoDB: Fatal error: cannot allocate memory for the buffer pool
160513 20:44:24 [ERROR] Plugin 'InnoDB' init function returned error.
160513 20:44:24 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
160513 20:44:24 [ERROR] Unknown/unsupported storage engine: InnoDB
160513 20:44:24 [ERROR] Aborting

160513 20:44:24 [Note] /alidata/server/mysql/bin/mysqld: Shutdown complete

160513 20:44:24 mysqld_safe mysqld from pid file /alidata/server/mysql/data/iZ28jy75s3vZ.pid ended

说明：用的阿里云服务器，LNMP一键安装包！

以前也经常遇到数据库崩溃，重启一下就好了，但是治标不治本，经常隔三差五得重启服务器！

请高手帮忙分析一下！

修改下mysql的配置文件
innodb_buffer_pool_size
key_buffer

调低下

在caozuo mysql 时 加入错误捕捉代码 {try{}}, 捕捉错误信息 根据信息分析原因