监控mysqld服务

 #!/bin/bash
 #监控mysqld服务

 #telnet 192.168.122.171 3306 | grep Connected | wc -l            #远程检查

 #num=`netstat -ntlp | grep 3306 | wc -l`        #统计端口的数量,转化成数字
 #num=`lsof -i tcp:3306 | wc -l`                #统计端口的数量，转化成数字

 num=`netstat -ntlp | grep mysqld | wc -l`        #统计mysqld服务的数量，转化成数字
 if [ $num -gt 0 ]
 then
     echo "mysql is running..."
 else
     echo "mysql is stoped..."
     systemctl start mariadb >/dev/null 2>> /root/mariadb.log
 fi