闲来无事，自己写了一个mysql进程检查的脚本。想想初学编程时候到处去网上搜的经历，忽然想笑。我是运维工程师，我也想说：“I am a Coder!”。


#!/bin/bash
#DATE 2013/11/25
#MAIL gccmx@163.com
#FUNCTION check the mysql status,if not run start mysql.
#Create by Chenchao Gao
checkMysql(){
        CMDCHECK=`lsof -i:3306 &>/dev/null`
        Port="$?"
        PIDCHECK=`ps aux|grep mysqld|grep -v grep`
        PID="$?"
        if [ "$Port" -eq "0" -a "$PID" -eq 0 ];then
                return 200
        else
                return 500
        fi
}
startMysql(){
        /etc/init.d/mysqld start
}
checkMysql
if [ $? == 200 ];then
        echo "Mysql is running..."
else
        startMysql
        checkMysql
        if [ $? != 200 ];then
                while true
                do
                        killall mysqld
                        sleep 2
                        [ $? != 0 ]&&break
                done
                startMysql
        fi
fi