zabbix监控keepalived的脑裂

[root@zabbix_server ~]# zabbix_server
[root@zabbix_server ~]# zabbix_agentd 
[root@zabbix_server ~]# ss -anlt
State      Recv-Q Send-Q    Local Address:Port                   Peer Address:Port              
LISTEN     0      128                   *:10050                             *:*                  
LISTEN     0      128                   *:10051                             *:*                  
LISTEN     0      128           127.0.0.1:9000                              *:*                  
LISTEN     0      128                   *:22                                *:*                  
LISTEN     0      100           127.0.0.1:25                                *:*                  
LISTEN     0      80                   :::3306                             :::*                  
LISTEN     0      128                  :::80                               :::*                  
LISTEN     0      128                  :::22                               :::*                  
LISTEN     0      100                 ::1:25                               :::*                  

httpd服务

[root@master ~]# ss -anlt
State       Recv-Q       Send-Q             Local Address:Port             Peer Address:Port      
LISTEN      0            128                      0.0.0.0:22                    0.0.0.0:*         
LISTEN      0            128                         [::]:22                       [::]:*         
LISTEN      0            128                            *:80                          *:*         



[root@slave ~]# ss -anlt
State       Recv-Q       Send-Q             Local Address:Port             Peer Address:Port      
LISTEN      0            128                      0.0.0.0:22                    0.0.0.0:*         
LISTEN      0            128                            *:80                          *:*         
LISTEN      0            128                         [::]:22                       [::]:*         

VIP所在位置

[root@master ~]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens160:  mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:da:55:0e brd ff:ff:ff:ff:ff:ff
    inet 192.168.47.120/24 brd 192.168.47.255 scope global noprefixroute ens160
       valid_lft forever preferred_lft forever
    inet 192.168.47.250/32 scope global ens160
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feda:550e/64 scope link 
       valid_lft forever preferred_lft forever


      
[root@slave ~]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens160:  mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:ba:4c:cb brd ff:ff:ff:ff:ff:ff
    inet 192.168.47.121/24 brd 192.168.47.255 scope global noprefixroute ens160
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feba:4ccb/64 scope link 
       valid_lft forever preferred_lft forever

[root@zabbix_server ~]# scp /usr/src/zabbix-5.4.4.tar.gz root@192.168.47.121:/usr/src/
root@192.168.47.121's password: 
zabbix-5.4.4.tar.gz                                             100%   23MB 113.9MB/s   00:00    

[root@slave ~]# cd /usr/src/
[root@slave src]# ls
debug  kernels  zabbix-5.4.4.tar.gz
[root@slave src]# tar xf zabbix-5.4.4.tar.gz 
[root@slave src]# useradd -r -M -s /sbin/nologin zabbix
[root@slave src]# yum -y install vim wget gcc gcc-c++ make pcre-devel openssl openssl-devel
[root@slave src]# cd zabbix-5.4.4/
[root@slave zabbix-5.4.4]# ./configure --enable-agent
[root@slave zabbix-5.4.4]# make install


[root@slave ~]# vim /usr/local/etc/zabbix_agentd.conf
Server=192.168.47.140			#113行
ServerActive=192.168.47.140 	#154行
Hostname=keepalived				    #165行 


[root@slave ~]# zabbix_agentd 
[root@slave ~]# ss -anlt
State       Recv-Q      Send-Q             Local Address:Port              Peer Address:Port      
LISTEN      0           128                      0.0.0.0:22                     0.0.0.0:*         
LISTEN      0           128                      0.0.0.0:10050                  0.0.0.0:*         
LISTEN      0           128                            *:80                           *:*         
LISTEN      0           128                         [::]:22                        [::]:*         

[root@slave ~]# cd /scripts/
[root@slave scripts]# ls
notify.sh[root@slave scripts]# ip a show ens160 | grep 192.168.47.250 | wc -l
0				判断vip是否为空，为空就是正确的，所以为0
[root@slave scripts]# vi check_keepalived.sh
[root@slave scripts]# cat check_keepalived.sh 
#!/bin/bash
#-ne （判断两个整数是否不相等）
if [ `ip a show ens160 | grep 192.168.47.250 | wc -l` -ne 0 ]
then
    echo "1"		有vip
else
    echo "0"		没有vip
fi
[root@slave scripts]# chmod +x check_keepalived.sh 
[root@slave scripts]# ./check_keepalived.sh 
0		#说明slave上没有vip，keepalived服务正常
//开启自定义监控服务
[root@slave ~]# vi /usr/local/etc/zabbix_agentd.conf
UnsafeUserParameters=1 	#取消这322一行的注释并把0修改为1表示启用

//并在最后面新建一行插入脚本
[root@slave ~]# vi /usr/local/etc/zabbix_agentd.conf
UserParameter=check_keepalived[*],/scripts/check_keepalived.sh $1

//重启服务
[root@slave ~]# pkill zabbix
[root@slave ~]# zabbix_agentd 
[root@slave ~]# ss -anlt
State       Recv-Q      Send-Q             Local Address:Port              Peer Address:Port      
LISTEN      0           128                      0.0.0.0:22                     0.0.0.0:*         
LISTEN      0           128                      0.0.0.0:10050                  0.0.0.0:*         
LISTEN      0           128                            *:80                           *:*         
LISTEN      0           128                         [::]:22                        [::]:*         

//zabbix_server上测试
[root@zabbix_server ~]# zabbix_get -s 192.168.47.121 -k check_keepalived['ip']
0		#正常

查看监控器是否在正常工作

等于1说明有问题

[root@master ~]# systemctl stop keepalived.service 
[root@master ~]# systemctl stop httpd.service