Zabbix自定义监控MySQL状态详解

Zabbix版本：3.0.4

MySQL Server 版本：5.6.29 二进制安装

zabbix_agentd.conf的配置文件如下：

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# cat /usr/local/zabbix/etc/zabbix_agentd.conf | grep -v '^#' | grep -v '^$'
LogFile=/tmp/zabbix_agentd.log
EnableRemoteCommands=1
Server=10.18.3.193
ListenPort=10050
ServerActive=10.18.3.193
Hostname=10.18.3.191
AllowRoot=1
Include=/usr/local/zabbix/etc/zabbix_agentd.conf.d/*.conf
UnsafeUserParameters=1
#下面两行是自定义的key
UserParameter=mysql.slave,/usr/local/zabbix/share/zabbix/alertscripts/check_mysql_slave.sh | grep -c 'ok'
UserParameter=mysql.status[*],/usr/local/zabbix/share/zabbix/alertscripts/mysql_server_status.sh $1

查看mysql授权：

mysql授权需要密码才能访问，但是使用密码mysql会提示明文密码，就会有下面的提示：

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# sh check_mysql_slave.sh
Warning: Using a password on the command line interface can be insecure.
ok -slave is running

解决办法如下：

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# cat /etc/my.cnf | tail -4
[client]
user = root
host = localhost
password = 1qaz@WSX

再次运行脚本：

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# sh check_mysql_slave.sh
ok -slave is running

mysql主从监控脚本，脚本中去掉用户，密码直接使用命令。

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# cat check_mysql_slave.sh
#!/bin/bash
declare -a slave_is
slave_is=($(/data/mysql/bin/mysql -e "show slave status\G"|grep -E "Slave_IO_Running|Slave_SQL_Running:"|awk '{print $2}'))
if [ "${slave_is[0]}" = "Yes" -a "${slave_is[1]}" = "Yes" ];then
echo "ok -slave is running"
exit 0
else
echo "down -slave is not running"
exit 2
fi

mysql_server_status脚本，这块上面my.cnf填写以后，使用mysqladmin也就不提示了：

[root@iZuf67iz9o3i4wixgtwybnZ alertscripts]# cat mysql_server_status.sh
#!/bin/bash
source /etc/profile
mysqladmin=`which mysqladmin`
case $1 in
Uptime)
result=`${mysqladmin} status|cut -f2 -d":"|cut -f1 -d"T"`
echo $result
;;
Com_update)
result=`${mysqladmin} extended-status |grep -w "Com_update"|cut -d"|" -f3`
echo $result
;;
Slow_queries)
result=`${mysqladmin} status |cut -f5 -d":"|cut -f1 -d"O"`
echo $result
;;
Com_select)
result=`${mysqladmin} extended-status |grep -w "Com_select"|cut -d"|" -f3`
echo $result
;;
Com_rollback)
result=`${mysqladmin} extended-status |grep -w "Com_rollback"|cut -d"|" -f3`
echo $result
;;
Questions)
result=`${mysqladmin} status|cut -f4 -d":"|cut -f1 -d"S"`
echo $result
;;
Com_insert)
result=`${mysqladmin} extended-status |grep -w "Com_insert"|cut -d"|" -f3`
echo $result
;;
Com_delete)
result=`${mysqladmin} extended-status |grep -w "Com_delete"|cut -d"|" -f3`
echo $result
;;
Com_commit)
result=`${mysqladmin} extended-status |grep -w "Com_commit"|cut -d"|" -f3`
echo $result
;;
Bytes_sent)
result=`${mysqladmin} extended-status |grep -w "Bytes_sent" |cut -d"|" -f3`
echo $result
;;
Bytes_received)
result=`${mysqladmin} extended-status |grep -w "Bytes_received" |cut -d"|" -f3`
echo $result
;;
Com_begin)
result=`${mysqladmin} extended-status |grep -w "Com_begin"|cut -d"|" -f3`
echo $result
;;

*)
echo "Usage:$0(Uptime|Com_update|Slow_queries|Com_select|Com_rollback|Questions|Com_insert|Com_delete|Com_commit|Bytes_sent|Bytes_received|Com_begin)"
;;
esac

在zabbix_server获取key值，或是查看zabbix_server.log文件都可以排错。

[root@iZuf67iz9o3i4wixgtwybmZ bin]# ./zabbix_get -s 10.18.3.191 -k mysql.status[Uptime]
ZBX_NOTSUPPORTED: Unsupported item key.
[root@iZuf67iz9o3i4wixgtwybmZ bin]# ./zabbix_get -s 10.18.3.191 -k mysql.status[Uptime]
/usr/local/zabbix/share/zabbix/alertscripts/mysql_server_status.sh: line 4: mysqladmin: command not found
[root@iZuf67iz9o3i4wixgtwybmZ bin]# ./zabbix_get -s 10.18.3.191 -k mysql.status[Uptime]
414242

zabbix_agent.log可以看到已经获取到自定义的key：