[MySQL] shell脚本：监控MySQL服务是否正常

#!/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

[root@localhost baby]# cat check_mysql.sh
#!/bin/bash
#written by mofansheng@2015-10-15
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

#!/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

[root@localhost baby]# cat check_db_client.sh
#!/bin/bash
#written by mofansheng@2015-10-15
mysql -uroot -p123456 -e "select version();" &>/dev/null
if [ $? -ne 0 ]
then
 /etc/init.d/mysqld start
else
 echo "MySQL is running"
fi