维护keepalived与mysql漂移脚本

2022-12-04 17:29:41

环境拓扑

chengAlived

#!/bin/bash

function checkModelone(){

	echo "重新进行获取"

	wget 192.168.158.147:3306 -O mysql

	echo "获取成功"

	echo "进行判断..."

	grep "5.7.17" mysql > /dev/null

	if [ $? -eq 0 ]; then

	       	echo "mysql正在运行..."

		echo "检查keepalived进程是否存在..."

		ps aux|grep keepalived |grep -v grep

		if [ $? -ne 0 ]

		then

			echo "keepalived进程丢失"

			echo "准备重启keepalived..."

			/usr/local/keepalived/sbin/keepalived -f /etc/keepalived/keepalived.conf

                        echo "重启成功"

		else

			echo "keepalived 正在运行..."

		fi

	else

		echo "mysql端口异常..."

		echo "准备杀除keepalived进程进行漂移"

		chengkill keepalived

		echo "漂移作业完毕"

	fi

}

function checkModeltwo(){

   checkModelone

}

while [ true ]; do

	/bin/sleep 10

	if [ -d "mysql" ];then

		touch mysql

	else

		if [ -s ./mysql ]; then

			echo "文件不为空"

			checkModelone

			du -sh mysql

		else

			echo "文件为空"

			checkModeltwo

		fi

	fi

done

运行规则:nohup ./chengAlived.sh &

说明+:

运行后, 会判断是否存在名字为"mysql"的文件, 否则新建, 把wget后的内容写进这个文件, 通过3306端口使用grep判断mysql版本号, 对keepalived漂移进行管理.

讲解+

第一台机器mysql主机+vip

第二台机器keepalived+lvs

启动脚本

nohup ./chengAlive.sh &

进程

ps aux | grep chengAlive.sh 

[root@localhost test]# ps aux | grep chengAlive.sh

root      16407  0.0  0.1 113128  1412 pts/1    S    15:27   0:00 /bin/bash ./chengAlive.sh

root      16410  0.0  0.1 112676  1008 pts/1    R+   15:27   0:00 grep --color=auto chengAlive.sh

日志(mysql处于正常开启状态)