节点配置

keepalived 自带通知组件并不是很友好，这里我们采用自定义邮件通知方式

1、shell 邮件告警

# yum install -y mailx
# vim /etc/mail.rc
set from=newrain_wang@163.com
set smtp=smtp.163.com
set smtp-auth-user=newrain_wang@163.com
set smtp-auth-password=XXXXXXXXXXXXXX
set smtp-auth=login
set ssl-verify=ignore

# 脚本代码
#!/bin/bash
to_email='1161733918@qq.com'
ipaddress=`ip -4 a show dev ens33 | awk '/brd/{print $2}'`
notify() {
    mailsubject="${ipaddress}to be $1, vip转移"
    mailbody="$(date +'%F %T'): vrrp 飘移, $(hostname) 切换到 $1"
    echo "$mailbody" | mail -s "$mailsubject" $to_email
}
case $1 in
master)
    notify master
    ;;
backup)
    notify backup
    ;;
fault)
    notify fault
    ;;
*)
    echo "Usage: $(basename $0) {master|backup|fault}"
    exit 1
    ;;
esac

2、配置文件

! Configuration File for keepalived

global_defs {
   router_id directory1
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 80
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.96.100/24
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

# 解释：
    #当前节点成为主节点时触发的脚本 notify_master
    #当前节点转为备节点时触发的脚本 notify_backup
    #当前节点转为失败状态时触发的脚本 notify_fault