Keepalived : メール通知の設定2023/10/11 |
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Keepalived ノード間で障害が発生してフェイルオーバーした場合に、メール通知するよう設定します。 当例では以下のような環境を例にします。
VIP:10.0.0.30
+----------------------+ | +----------------------+
| [node01.srv.world] |10.0.0.51 | 10.0.0.52| [node02.srv.world] |
| Keepalived#1 +----------+----------+ Keepalived#2 |
| | | |
+----------------------+ +----------------------+
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| [1] |
こちらを参考に、全ノードで SMTP サーバーを起動しておきます。 |
| [2] | Keepalived ノード間の基本的な設定に加えて、全ノードでメール通知の設定をします。 |
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root@node01:~#
vi /etc/keepalived/keepalived.conf
global_defs {
router_id node01
# SMTP 設定を追記
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
}
# 追記
smtp_alert
}
root@node01:~# systemctl reload keepalived
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| [3] | 以上で、フェイルオーバーやフェイルバックした際にはメール通知が送信されます。 |
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# 障害発生ノード root@node01:~# mail
"/var/mail/root": 1 message 1 unread
>U 1 root@node01.srv.wo Wed Oct 11 09:58 19/608 [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 4B14BE0220
for <root@localhost>; Wed, 11 Oct 2023 09:58:46 +0900 (JST)
Date: Wed, 11 Oct 2023 09:58:46 +0900
From: root@node01.srv.world
Subject: [node01] VRRP Instance VRRP1 - Entering FAULT state
X-Mailer: Keepalived
To: root@localhost
Message-Id: <20231011005846.4B14BE0220@node01.srv.world>
X-IMAPbase: 1696985936 2
X-UID: 1
Status: O
=> VRRP Instance is no longer owning VRRP VIPs <=
# バックアップノード root@node02:~# mail
"/var/mail/root": 2 messages 2 new
>N 1 root@node01.srv.wo Wed Oct 11 09:58 16/540 [node02] VRRP Instance VR
N 2 root@node01.srv.wo Wed Oct 11 10:00 16/546 [node02] VRRP Instance VR
? 1
Return-Path: <root@node01.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 514ACE0222
for <root@localhost>; Wed, 11 Oct 2023 09:58:49 +0900 (JST)
Date: Wed, 11 Oct 2023 09:58:49 +0900
From: root@node01.srv.world
Subject: [node02] VRRP Instance VRRP1 - Entering MASTER state
X-Mailer: Keepalived
To: root@localhost
Message-Id: <20231011005849.514ACE0222@node02.srv.world>
=> VRRP Instance is now owning VRRP VIPs <=
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