- #!/bin/bash
- #define mysql variable
- mysql_user="root"
- mysql_pass="123456"
- email_addr="slave@centos.bz"
- mysql_status=`netstat -nl | awk 'NR>2{if ($4 ~ /.*:3306/) {print "Yes";exit 0}}'`
- if [ "$mysql_status" == "Yes" ];then
- slave_status=`mysql -u${mysql_user} -p${mysql_pass} -e"show slave status\G" | grep "Running" | awk '{if ($2 != "Yes") {print "No";exit 1}}'`
- if [ "$slave_status" == "No" ];then
- echo "slave is not working!"
- [ ! -f "/tmp/slave" ] && echo "Slave is not working!" | mail -s "Warn!MySQL Slave is not working" ${email_addr}
- touch /tmp/slave
- else
- echo "slave is working."
- [ -f "/tmp/slave" ] && rm -f /tmp/slave
- fi
- [ -f "/tmp/mysql_down" ] && rm -f /tmp/mysql_down
- else
- [ ! -f "/tmp/mysql_down" ] && echo "Mysql Server is down!" | mail -s "Warn!MySQL server is down!" ${email_addr}
- touch /tmp/mysql_down
- fi
此脚本首先判断mysql服务器是否运行,如果正常,继续判断主从,否则发邮件告警,只发一次。
判断主从状态是判断IO和SQL线程是否都为yes,如果不是则发邮件通知,只发一次。