The email forwarding service experienced an issue
Anyone using University of Alberta email service was affected.
Email messages being sent to University of Alberta accounts were delayed.
Start: 2015/03/28 16:15 – Monitoring systems discovered a problem with multiple systems.
2015/03/28 16:20 – IT support analysts began working on the issue.
2015/03/28 17:50 – The problem was identified to be an unresponsive network interface on the main load balancer.
2015/03/28 17:50 – The network interface was restarted.
End: 2015/03/28 18:15 – All services were confirmed restored.
A network interface on the main load balancer became unresponsive. When the interface failed it did not trigger a failover to the second load balancer as expected. The load balancer has three network interfaces but only one of them went down. Because the other interfaces were still functional the failover to the second load balancer did not occur.
Network interface was taken down and brought back online
Investigate if it’s possible to monitor individual interfaces separately.