Keepalived : Set Email Notification2024/07/23 |
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Set Email Notification when failover or failback happened. This example is based on the environment like follows.
VIP:10.0.0.30
+----------------------+ | +----------------------+
| [node01.srv.world] |10.0.0.51 | 10.0.0.52| [node02.srv.world] |
| Keepalived#1 +----------+----------+ Keepalived#2 |
| | | |
+----------------------+ +----------------------+
|
| [1] |
Install SMTP Server on all Nodes, refer to here. |
| [2] | In addition to basic Keepalived settings like here, set Email notification on all Nodes. |
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root@node01:~#
vi /etc/keepalived/keepalived.conf
global_defs {
router_id node01
# add SMTP setting
notification_email {
root@localhost
}
notification_email_from root@node01.srv.world
smtp_server localhost
smtp_connect_timeout 30
}
vrrp_instance VRRP1 {
state MASTER
# nopreempt
interface enp1s0
virtual_router_id 101
priority 200
advert_int 1
virtual_ipaddress {
10.0.0.30/24
}
# add
smtp_alert
}
root@node01:~# systemctl reload keepalived
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| [3] | That's OK. Verify Email notification. |
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# node that some troubles happened root@node01:~# mail
"/var/mail/root": 1 message 1 new
>N 1 root@node01.srv.wo Tue Jul 23 05:30 15/546 [node01] VRRP Instance VR
? 1
Return-Path: <root@node01.srv.world>
X-Original-To: root@localhost
Delivered-To: root@localhost
Received: from node01.srv.world (localhost [127.0.0.1])
by node01.srv.world (Postfix) with SMTP id 5D92F161D3A
for <root@localhost>; Tue, 23 Jul 2024 05:30:34 +0000 (UTC)
Date: Tue, 23 Jul 2024 05:30:34 +0000
From: root@node01.srv.world
Subject: [node01] VRRP Instance VRRP1 - Entering FAULT state
X-Mailer: Keepalived
To: root@localhost
Message-Id: <20240723053034.5D92F161D3A@node01.srv.world>
=> VRRP Instance is no longer owning VRRP VIPs <=
# backup node root@node02:~# mail
"/var/mail/root": 1 message 1 new
>N 1 root@node02.srv.wo Tue Jul 23 05:30 15/541 [node02] VRRP Instance VR
? 1
Return-Path: <root@node02.srv.world>
X-Original-To: root@localhost
Delivered-To: root@localhost
Received: from node02.srv.world (localhost [127.0.0.1])
by node02.srv.world (Postfix) with SMTP id 5AC46160D71
for <root@localhost>; Tue, 23 Jul 2024 05:30:37 +0000 (UTC)
Date: Tue, 23 Jul 2024 05:30:37 +0000
From: root@node02.srv.world
Subject: [node02] VRRP Instance VRRP1 - Entering MASTER state
X-Mailer: Keepalived
To: root@localhost
Message-Id: <20240723053037.5AC46160D71@node02.srv.world>
=> VRRP Instance is now owning VRRP VIPs <=
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