一 通知脚本类型

• 当前节点成为主节点时触发脚本 notify_master <STRING>|<QUOTED-STRING>
• 当前节点转为备节点时触发脚本 notify_back <STRING>|<QUOTED-STRING>
• 当前节点转为失败状态时触发脚本 notify_fault <STRING>|<QUOTED-STRING>
• 通过格式的通知触发机制 notify <STRING>|<QUOTED-STRING>
• 当停止vrrp时触发脚本 notify_stop <STRING>|<QUOTED-STRING>

二 创建通知脚本

root@node-01:~# cat /etc/keepalived/notify.sh
#!/bin/bash
#
contact='1304995320@qq.com'
notify() {
    mailsubject="$(hostname) to be master, vip floating"
    mailbody="$(date +'%F %T'): vrrp transition,$(hostname) changed to be master"
    echo "$mailbody" | s-nail -s  "$mailsubject"  $contact
}
case $1 in
master)
    notify master
    ;;
backup)
    notify backup
    ;;
fault)
    notify fault
    ;;
*)
    echo "Usage:(basename $0) {master|backup|fault}"
    exit 1
    ;;
esac

三 脚本调用方法

root@node-01:~# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {

notification_email {

1304005320@qq.com

}

notification_email_from 1304005320@qq.com

smtp_server 192.168.200.1

smtp_connect_timeout 30

router_id node-01

vrrp_skip_check_adv_addr

vrrp_strict

vrrp_garp_interval 0

vrrp_gna_interval 0

}
vrrp_instance VI_1 {

state BACKUP

interface ens33

virtual_router_id 101

priority 100

advert_int 1

preempt

preempt_delay 300

authentication {

auth_type PASS

auth_pass 1111

}

virtual_ipaddress {

192.168.174.20

}

notify_master "/etc/keepalived/notify.sh master"

notify_backup "/etc/keepalived/notify.sh backup"

notify_fault "/etc/keepalived/notify.sh fault"

}

四 模拟node-01故障

root@node-01:~# systemctl stop keepalived