Linux项目之zabbix监控脑裂

环境需求

主机	IP地址	所需服务
zabbix server端	192.168.159.135	lamp、zabbix-server、zabbix-agentd
主keepalived端	192.168.159.137	keepalived
备keepalived端	192.168.159.144	keepalived、zabbix-agentd

1. 配置

配置server端的lamp和zabbix，我这里就不过多阐述了，有疑问可以参考Liunx服务管理之lamp 和Linux监控服务之zabbix

配置主备keepalived的步骤，我上篇博客Linux服务之keepalived高可用里就有写到，这里也不做详细讲解了

2. 查看主备服务器上的vip状态

配置监控前，主keepalived端

 //VIP还是在主这里
[root@master ~]#  ss -anlt
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            :::80                         :::*                  
LISTEN      0      128            :::22                         :::*                  
LISTEN      0      100           ::1:25                         :::*                  
[root@master ~]#  ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:b2:1a:0e brd ff:ff:ff:ff:ff:ff
    inet 192.168.159.137/24 brd 192.168.159.255 scope global dynamic eno16777736
       valid_lft 1647sec preferred_lft 1647sec
    inet 192.168.159.250/32 scope global eno16777736
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feb2:1a0e/64 scope link 
       valid_lft forever preferred_lft forever 

配置监控前，备keepalived端

 //目前，VIP不在备上面
[root@slave ~]#  ss -anlt
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                         :::*                  
[root@slave ~]#  ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:50:56:23:3e:ef brd ff:ff:ff:ff:ff:ff
    inet 192.168.159.144/24 brd 192.168.159.255 scope global dynamic eth0
       valid_lft 1521sec preferred_lft 1521sec
    inet6 fe80::250:56ff:fe23:3eef/64 scope link 
       valid_lft forever preferred_lft forever 

3. 在备上安装、配置zabbix

//安装一些常用的工具
[root@slave ~]# yum -y install vim wget gcc gcc-c++ net-snmp-devel libevent-devel

//下载zabbix安装包，进行编译、安装
[root@slave ~]# cd /usr/src/
[root@slave src]# ls
debug  kernels  zabbix-4.4.7  zabbix-4.4.7.tar.gz
[root@slave src]# cd zabbix-4.4.7
[root@slave zabbix-4.4.7]# ./configure --enable-agent
[root@slave zabbix-4.4.7]# make install

//修改配置文件
[root@slave ~]# cd /usr/local/etc/
[root@slave etc]# ls
zabbix_agentd.conf  zabbix_agentd.conf.d
[root@slave etc]# vim zabbix_agentd.conf
..........
Server=192.168.159.135
..........
ServerActive=192.168.159.135
..........
Hostname=Zabbix client

//创建zabbix用户
[root@slave ~]# useradd -r -M -s /sbin/nologin zabbix
[root@slave ~]# id zabbix
uid=996(zabbix) gid=994(zabbix) groups=994(zabbix)

//启动服务
[root@slave ~]# zabbix_agentd 
[root@slave ~]# ss -anlt
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                         :::* 

//写入监控脑裂的脚本
[root@slave ~]# cd /scripts/
[root@slave scripts]# ls
notify.sh
[root@slave scripts]# vim check_keepalived.sh 
[root@slave scripts]# cat check_keepalived.sh
#!/bin/bash

if [ `ip a show eth0 |grep 192.168.159.250|wc -l` -ne 0 ]
then
    echo "1"
else
    echo "0"
fi
[root@slave scripts]# chmod +x check_keepalived.sh 
[root@slave scripts]# ll
total 8
-rwxr-xr-x 1 root root 110 Jul 31 18:01 check_keepalived.sh
-rwxr-xr-x 1 root root 451 Jul 31 17:32 notify.sh
[root@slave scripts]# ./check_keepalived.sh 
0

//把脚本写入配置文件
[root@slave ~]# vim /usr/local/etc/zabbix_agentd.conf
.............
UnsafeUserParameters=1
UserParameter=check_process[*],/bin/bash /scripts/check_keepalived.sh $1

//重启服务
[root@slave ~]# pkill zabbix
[root@slave ~]# zabbix_agentd 

4. 在server端，手动测试脚本有没有问题

[root@Server ~]# zabbix_get -s 192.168.159.144 -k check_process
0                      //能看到0就是没错的！！ 

5. 在web界面配置监控项（zabbix server端）

5.1 创建主机

5.2 添加监控项

5.3 添加触发器

5.4 添加媒介

5.5 添加动作

5.6 进入Latest data查看

6. 触发监控

修改备上的配置文件，让备与主的virtual_router_id不一样，就是争抢VIP，导致脑裂

[root@slave ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

...............

    virtual_router_id 52

...............

//重启服务
[root@slave ~]# systemctl restart keepalived
[root@slave ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:50:56:23:3e:ef brd ff:ff:ff:ff:ff:ff
    inet 192.168.159.144/24 brd 192.168.159.255 scope global dynamic eth0
       valid_lft 1681sec preferred_lft 1681sec
    inet 192.168.159.250/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::250:56ff:fe23:3eef/64 scope link 
       valid_lft forever preferred_lft forever 

查看有没有监控到

本文地址：https://blog.csdn.net/DragonYear/article/details/107835201