宝塔面板MySql进程守护监控脚本_数据库关闭后自动重启

前段时间奶爸把一台VPS环境从LNMP换到了宝塔面板，结果经常MySQL数据库莫名其妙的自动停止，看日志也没看出来是什么问题，所以就只能来一招最简单的数据库进程守护了。

宝塔面板添加MySQL进程守护脚本方法

在宝塔面板后台，点击计划任务，然后添加一个Shell脚本。名字自选，执行周期按分钟执行，奶爸这里是设置的十分钟，脚本内容如下：

pgrep -x mysqld &> /dev/null
if [ $? -ne 0 ];then
bash /www/server/panel/script/rememory.sh
/etc/init.d/mysqld start
fi

另外在MySQL的性能优化里面，设置了一下，然后保存了发现并没什么卵用，MySQL依然停止运行，代码如下，空了再来具体研究问题所在了。

190513 14:39:11 [Note] /www/server/mysql/bin/mysqld: Normal shutdown

190513 14:39:11 [Note] Event Scheduler: Purging the queue. 0 events
190513 14:39:11  InnoDB: Starting shutdown...
190513 14:39:12  InnoDB: Shutdown completed; log sequence number 618693401
190513 14:39:12 [Note] /www/server/mysql/bin/mysqld: Shutdown complete

190513 14:39:13 [Note] Plugin 'FEDERATED' is disabled.
190513 14:39:13 InnoDB: The InnoDB memory heap is disabled
190513 14:39:13 InnoDB: Mutexes and rw_locks use GCC atomic builtins
190513 14:39:13 InnoDB: Compressed tables use zlib 1.2.7
190513 14:39:13 InnoDB: Using Linux native AIO
190513 14:39:13 InnoDB: Initializing buffer pool, size = 256.0M
190513 14:39:13 InnoDB: Completed initialization of buffer pool
190513 14:39:13 InnoDB: highest supported file format is Barracuda.
190513 14:39:14  InnoDB: Waiting for the background threads to start
190513 14:39:15 InnoDB: 5.5.57 started; log sequence number 618693401
190513 14:39:15 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
190513 14:39:15 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
190513 14:39:15 [Note] Server socket created on IP: '0.0.0.0'.
190513 14:39:15 [Warning] 'user' entry 'x@%' has both a password and an authentication plugin specified. The password will be ignored.
190513 14:39:15 [Note] Event Scheduler: Loaded 0 events
190513 14:39:15 [Note] /www/server/mysql/bin/mysqld: ready for connections.
Version: '5.5.57-log'  socket: '/tmp/mysql.sock'  port: 3306  Source distribution
190513 14:39:21 [Warning] IP address '2' has been resolved to the host name '2.vultr.com', which resembles IPv4-address itself.
190513 14:39:43 [Warning] IP address '9' has been resolved to the host name '9.vultr.com', which resembles IPv4-address itself.
190513 14:39:48 [Warning] IP address '8' has been resolved to the host name '8.vultr.com', which resembles IPv4-address itself.
190513 14:40:12 [Warning] IP address '9' has been resolved to the host name '9.vultr.com', which resembles IPv4-address itself.

2021年05月14日更新：依然死，调整了下swap大小再观察下。然后还重启了一次服务器。开机后内存使用600+，还空200+