keepalived 邮件通知

邮件通知需要先定义一个邮件发送的脚本，然后在虚拟IP的配置实例中添加相应的触发机制来实现当keepalived主备发生变化时进行发送邮件，以通知运维人员的目的。

实现方法

准备主机两台

S1 节点操作

1.安装mailx

[root@s1 ~]# yum install mailx -y

2.设置发件人的配置

[root@s1 ~]# vim /etc/mail.rc
set from=438214186@qq.com
set smtp=smtp.qq.com
set smtp-auth-user=438214186@qq.com
set smtp-auth-password=ugfwthlnfossbiif
set smtp-auth=login
set ssl-verify=ignore

3.编写邮件通知脚本

[root@s1 ~]# vim /etc/keepalived/notify.sh
#!/bin/bash
contact='438214186@qq.com'
notify() {mailsubject="$(hostname) to be $1, vip转移"mailbody="$(date +'%F %T'): vrrp transition, $(hostname) changed to be $1"echo "$mailbody" | mail -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

4.在配置文件中调用脚本

[root@s1 ~]# vim /etc/keepalived/keepalived.conf root@mylinuxops.com}notification_email_from root@mylinuxops.comsmtp_server 127.0.0.1smtp_connect_timeout 30router_id s1.mylinuxops.comvrrp_skip_check_adv_addr#vrrp_strictvrrp_iptablesvrrp_garp_interval 0vrrp_gna_interval 0
}vrrp_instance VI_1 {state MASTERinterface ens33virtual_router_id 27priority 100advert_int 2authentication {auth_type PASSauth_pass 1111}unicast_src_ip 172.20.27.10unicast_peer {172.20.27.11}virtual_ipaddress {172.20.27.100 dev ens33 label ens33:0}#以下三行为调用通知脚本notify_master "/etc/keepalived/notify.sh master"   #当前节点成为主节点时触发的脚本 notify_backup "/etc/keepalived/notify.sh backup"#当前节点转为备节点时触发的脚本notify_fault "/etc/keepalived/notify.sh fault"#当前节点转为失败状态时触发的脚本
}

重启服务

[root@s1 ~]# systemctl restart keepalived

s1节点配置完毕后，s2节点也执行相同的操作。

测试

当s1节点停止服务后，s2节点而发送邮件通知