nagios监控mysql主从
nagios监控mysql的主从，我这里介绍两种方法，一种是用nagios自带监控mysql 的插件实现，另一种是自己写脚本，下面是两种方法的具体实现过程：一、nagios自带监控mysql的插件实现
1、编辑/usr/local/nagios/etc/commands.cfg，添加监控mysql主从的字段：
define command{
command_name check_mysql_slave
command_line $USER1$/check_mysql -H $HOSTADDRESS$ -P13267 -S -uroot -p123456 -s /data/mysql/nagios/logs/mysql.sock
}
PS：-u指定用户，-P指定端口，-p指定密码，-s指定sock文件路径，-S监控主从
2、编辑/usr/local/nagios/etc/objects/cfg/navyserver.cfg ，添加监控mysql主从项目：
define service{
use generic-service
host_name navy
service_description check_mysql_slave1
check_command check_mysql_slave
}
3、重启nagios就OK了
/etc/init.d/nagios restart
二、脚本监控
1、撰写监控脚本
vi /usr/local/nagios/libexec/check_mysql_slave
#!/bin/sh
declare -a slave_is
slave_is=($(cd /data/mysql/nagios; /data/mysql/nagios/bin/mysql --sock=logs/mysql.sock-unagios -p123456-e "show slave status \G"|grep Running |awk '{print $2}'))
if [ "${slave_is}" = "Yes" -a "${slave_is}" = "Yes" ]
then
echo "OK -slave is running"
exit 0
else
echo "Critical -slave is error"
exit 2
fi
2、在/usr/local/nagios/etc/nrpe.cfg中添加监控mysql主从的命令
command=/usr/local/nagios/libexec/check_mysql_slave
3、编辑/usr/local/nagios/etc/objects/cfg/navyserver.cfg ，添加监控mysql主从项目：
define service{
use generic-service
host_name navy
service_description check_mysql_slave
check_command check_nrpe!check_mysql_slave
}
4、重启nagios就OK了
/etc/init.d/nagios restart
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