Steps to enable email alerts:

Step 1: Edit keepalived configuration file.

# /etc/keepalived/keepalived.conf

Step 2: Add below entry in global settings.

global_defs {
	notification_email {
        support@tecadmin.net
	}
  notification_email_from lb-alert@tecadmin.net
  smtp_server mail.tecadmin.net
  smtp_connect_timeout 30
# ...... Other configuration here .......
}

Step 3: Add smtp_alert in each VRRP instances.

vrrp_instance VI_1 {
# ...... Other configuration here .......
smtp_alert
# ...... Other configuration here .......
}

Step 4: Restart keepalived service.

# service keepalived restart

Step 5: Email alerts will be like below.

>> When VRRP instance goes to master state

Subject: [hostname] VRRP Instance VI_1 - Entering MASTER state
Message: => VRRP Instance is now owning VRRP VIPs <=

>> When VRRP instance goes to slave state

Subject: [hostname] VRRP Instance VI_1 - Entering SLAVE state
Message: => VRRP Instance is nolonger owning VRRP VIPs <=

Thanks for reading this article, I hope it will help you to enable email alerts in keepalived.

The post How to Enable Email Alerts in Keepalived appeared first on TecAdmin.