環境要求：

• 在192.168.225.128上做主資料庫，在192.168.225.128上做從資料庫，在192.168.225.130上搭建lamp架構並安裝zabbix。
• lamp架構
• zabbix部署
• MySQL主從

在從資料庫上安裝zabbix_agentd

[[email protected] ~]# yum -y install net-snmp-devel libevent-devel gcc gcc-c++ wget
[[email protected] ~]# cd /usr/src/
[[email protected] ~]# wget https://nchc.dl.sourceforge.net/project/zabbix/ZABBIX%20Latest%20Stable/3.4.12/zabbix-3.4.12.tar.gz
[
 
[email protected] src]#  tar -xf zabbix-3.4.12.tar.gz
[[email protected] src]# cd zabbix-3.4.12/
[[email protected] zabbix-3.4.12]# ./configure --enable-agent
[[email protected] zabbix-3.4.12]# make install
[[email protected] ~]# groupadd -r zabbix
[[email protected] ~]# useradd -r -M -s /sbin/nologin -g zabbix zabbix
[
 
[email protected] ~]# zabbix_agentd
[[email protected] ~]# ss -antl
State      Recv-Q Send-Q Local Address:Port               Peer Address:Port              
LISTEN     0      128          *:22                       *:*                  
LISTEN     0      100    127.0.0.1:25                       *:*                  
LISTEN     0      128          *:10050                    *:*                  
LISTEN     0      128         :::22                      :::*                  
LISTEN     0      100        ::1:25                      :::*                  
LISTEN     0      80          :::3306                    :::*     

//修改配置檔案
[[email protected] ~]# vim /usr/local/etc/zabbix_agentd.conf

Server=192.128.225.130
ServerActive=192.168.225.130
Hostname=192.168.225.129

192.168.225.129

• 寫監控MySQL主從狀態的指令碼

[[email protected] scripts]# vim zhucongsql.sh
#!/bin/bash
A=$(mysql -e'show slave status \G' |grep -i 'running:' |awk '{print $2}' |head -1)

if [ "$A" == "Yes" ];then
    echo "0"
else
    echo "1"
fi

[[email protected] scripts]# vim zhucongsql2.sh 
#!/bin/bash

B=$(mysql -e'show slave status \G' |grep -i 'running:' |awk '{print $2}' |tail -1)
if [ "$B" == "Yes" ];then
    echo "0"
else
    echo "1"
fi
//修改客戶端zabbix配置檔案
[[email protected] ~]# vim /usr/local/etc/zabbix_agentd.conf
//修改如下配置
UnsafeUserParameters=1
UserParameter=check_mysql_IO,/bin/bash /scripts/zhucongsql.sh
UserParameter=check_mysql_SQL,/bin/bash /scripts/zhucongsql2.sh

在客戶端測試指令碼

[[email protected] ~]# zabbix_get -s 192.168.225.129 -k check_mysql_IO
0
[[email protected] ~]# zabbix_get -s 192.168.225.129 -k check_mysql_SQL
0

配置web介面

再將資料庫的主從停掉，觸發報警
192.168.225.128

[[email protected] ~]# mysql -uroot -phxd123456. -e'stop slave;'
mysql: [Warning] Using a password on the command line interface can be insecure.

再將MySQL主從開啟
192.168.225.129

[[email protected] ~]# mysql -uroot -phxd123456. -e'start slave;'
mysql: [Warning] Using a password on the command line interface can be insecure.