zabbix監控keepalived

一、環境說明

服務說明	ip	vip
zabbix	192.168.69.134
keepalived主	192.168.69.133	192.168.69.100
keepalived從	192.168.69.130	192.168.69.100

首先安裝lamp和zabbix詳情參照安裝zabbix
二、安裝keepalived主

[root@localhost ~]#  curl -o /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@localhost ~]# sed -i 's/\$releasever/7/g' /etc/yum.repos.d/CentOS7-Base-163.repo
[root@localhost ~]# sed -i 's/^enabled=.*/enabled=1/g' /etc/yum.repos.d/CentOS7-Base-163.repo
[root@localhost ~]# yum -y install epel-release vim wget gcc gcc-c++
[root@localhost ~]# yum -y install keepalived
! Configuration File for keepalived

global_defs {
   router_id lb01
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.69.100
    }
}

virtual_server 192.168.69.100 80 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
 
     real_server 192.168.69.130 80 {
        weight 1
            TCP_CHECK {
            connect_port 80
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }   
    }   
}   
    real_server 192.168.69.134 80 {
        weight 1
            TCP_CHECK {
            connect_port 80
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}
[root@localhost scripts]# vim check_n.sh
[root@localhost scripts]# cat check_n.sh 
#!/bin/bash
nginx_status=$(ps -ef|grep -Ev "grep|$0"|grep '\bnginx\b'|wc -l)
if [ $nginx_status -lt 1 ];then
    systemctl stop keepalived
fi
[root@localhost scripts]# chmod +x check_n.sh 
[root@localhost scripts]# chmod +x check_n.sh
[root@localhost scripts]# vim notify.sh
[root@localhost scripts]# chmod +x notify.sh 
[root@localhost scripts]# cat notify.sh 
#!/bin/bash
VIP=$2
sendmail (){
        subject="${VIP}'s server keepalived state is translate"
        content="`date +'%F %T'`: `hostname`'s state change to master"
        echo $content | mail -s "$subject" [email protected]
}
case "$1" in
  master)
        nginx_status=$(ps -ef|grep -Ev "grep|$0"|grep '\bnginx\b'|wc -l)
        if [ $nginx_status -lt 1 ];then
            systemctl start nginx
        fi
        sendmail
  ;;
  backup)
        nginx_status=$(ps -ef|grep -Ev "grep|$0"|grep '\bnginx\b'|wc -l)
        if [ $nginx_status -gt 0 ];then
            systemctl stop nginx
        fi
  ;;
  *)
        echo "Usage:$0 master|backup VIP"
  ;;
esac

[root@localhost scripts]# vim /etc/keepalived/keepalived.conf 
! Configuration File for keepalived

global_defs {
   router_id lb01
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
global_defs {
   router_id lb01
}
vrrp_script nginx_check {
    script "/scripts/check_n.sh"
    interval 1
    weight -20
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    weight -20
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    virtual_ipaddress {
    }   
    track_script {
        nginx_check
    }   
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.69.100
    }
    track_script {
        nginx_check
    }
    notify_master "/scripts/notify.sh master 192.168.69.100"
    notify_backup "/scripts/notify.sh backup 192.168.69.100"
}
}

virtual_server 192.168.69.100 80 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
[root@localhost ~]# systemctl start keepalived

三、安裝keepalived備

[root@localhost ~]# sed -i '/SELINUX=enforcing/s/enforcing/disabled/g' /etc/selinux/config 
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@localhost ~]# systemctl mask firewalld
Created symlink from /etc/systemd/system/firewalld.service to /dev/null.
[root@localhost ~]# setenforce 0
[root@localhost ~]# yum -y install epel-release vim wget gcc gcc-c++
[root@localhost ~]# yum -y install keepalived
[root@localhost ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
   router_id lb02
}

vrrp_instance VI_1 {
    state BACKUP
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.69.100
    }
}

virtual_server 192.168.69.100 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 192.168.69.130 80 {
        weight 1
            TCP_CHECK {
            connect_port 80
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}
    real_server 192.168.69.134 80 {
        weight 1
            TCP_CHECK {
            connect_port 80
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}
[root@localhost ~]# mkdir /scripts
[root@localhost ~]# cd /scripts/
[root@localhost scripts]# vim notify.sh
[root@localhost scripts]# chmod +x notify.sh 
[root@localhost scripts]# cat notify.sh 
#!/bin/bash
VIP=$2
sendmail (){
        subject="${VIP}'s server keepalived state is translate"
        content="`date +'%F %T'`: `hostname`'s state change to master"
        echo $content | mail -s "$subject" [email protected]
}
case "$1" in
  master)
        nginx_status=$(ps -ef|grep -Ev "grep|$0"|grep '\bnginx\b'|wc -l)
        if [ $nginx_status -lt 1 ];then
            systemctl start nginx
        fi
        sendmail
  ;;
  backup)
        nginx_status=$(ps -ef|grep -Ev "grep|$0"|grep '\bnginx\b'|wc -l)
        if [ $nginx_status -gt 0 ];then
            systemctl stop nginx
        fi
  ;;
  *)
        echo "Usage:$0 master|backup VIP"
  ;;
esac
[root@localhost scripts]# vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   router_id lb02
}

vrrp_instance VI_1 {
    state BACKUP
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.69.100
    }
   notify_master "/scripts/notify.sh master 192.168.69.100"
   notify_backup "/scripts/notify.sh backup 192.168.69.100"
}

配置zabbix監控，對腦裂進行監控
//在備keepalived上寫監控腳本
[root@localhost ~]# cd /scripts/
[root@ scripts]# vim check_keepalived.sh
[root@ scripts]# cat check_keepalived.sh
#!/bin/bash

while true
do
if [ ip a show ens33 |grep 192.168.69.100|wc -l -ne 0 ]
then
echo 1
else
echo 0
fi
done

四、在zabbix客戶端上配置

[root@localhost ~]# cd /scripts/
[root@ scripts]# chown zabbix.zabbix check_keepalived.sh 
[root@ scripts]# ll
total 8
-rw-r--r--. 1 zabbix zabbix 125 Mar  9 22:17 check_keepalived.sh
-rwxr-xr-x. 1 root   root   662 Mar  9 21:46 notify.sh
[root@2 scripts]# sed -i '/# UnsafeUserParameters=0/s/#//g' /usr/local/etc/zabbix_agentd.conf
[root@2 scripts]# sed -i '/UnsafeUserParameters=0/s/0/1/g' /usr/local/etc/zabbix_agentd.conf
[root@2 scripts]# echo "UserParameter=check_keepalived,/scripts/check_keepalived.sh" >> /usr/local/etc/zabbix_agentd.conf
[root@2 scripts]# pkill zabbix
[root@2 scripts]# zabbix_agentd

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