Automatic restart script after the memcached process hangs out

Because the memcached of a Web server dies, it does not open when visiting certain pages of the site. The following script automatically detects the memcached process and automatically restarts the memcached service if it hangs.

Vim memcached_check.sh

#!/bin/sh

#check memcached process and restart if down

Path= $PATH:/opt/env/memcache/bin/memcached

Date= ' date-d ' "Today" + "%y-%m-%d-%h:%m"

#用ps命令查看memcached进程

mm= ' Ps-aux |grep ' memcached ' |grep ' 11211 ' |grep-v ' grep ' |wc-l '

#if语句判断进程是否存在, if not present, output logging and restart the memcached service

If ["$MM" = = "0"]; Then

echo "$DATE The memcached is problem and restart" >>/root/sh/memcached_check.logs

/opt/env/memcache/bin/memcached-t 8-d-M 2048-p 11211-u Nobody

Else

#echo "$DATE The memcached is OK" >>/root/sh/memcached_check.logs

Fi

Add scheduled tasks to be detected every 5 minutes.

*/5 * * * */bin/bash/root/sh/memcached_check.sh

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