shell监控MySQL服务是否正常
监控MySQL服务是否正常，通常的思路为：检查3306端口是否启动，ps查看mysqld进程是否启动，命令行登录mysql执行语句返回结果，#netstat -tunpl | grep 3306 |wc -l
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# ps -ef | grep mysql | grep -v grep |wc -l
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#chmod +x check_mysql.sh
# ./check_mysql.sh
MySQL is running
# cat check_mysql.sh
#!/bin/bash
#written by mofansheng@2015-10-15
port=`netstat -nlt|grep 3306|wc -l`
if [ $port -ne 1 ]
then
/etc/init.d/mysqld start
else
echo "MySQL is running"
fi
#chmod +x check_mysql2.sh
#cat check_mysql2.sh
#!/bin/bash
#written by hujianli
process=`ps -ef |grep mysql|grep -v grep |wc -l`
if [ $process -ne 2 ]
then
/etc/init.d/mysqld start
else
echo "MySQL is running"
fi
端口号和进程都检测到才算mysql启动成功
#!/bin/bash#written by mofansheng@2015-10-15 port=`netstat -nlt|grep 3306|wc -l`process=`ps -ef |grep mysql|grep -v grep |wc -l`if [ $port -eq 1 ] && [ $process -eq 2 ]then echo "MySQL is running"else /etc/init.d/mysqld start fi
使用客户端登录mysql执行命令，查看返回结果测试服务是否启动，理论上此方法最可靠。
# cat check_db_client.sh#!/bin/bash#written by mofansheng@2015-10-15 mysql -uroot -p123.com -e "select version();" &>/dev/nullif [ $? -ne 0 ]then /etc/init.d/mysqld startelse echo "MySQL is running"fi
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