An issue occurred on April 29th during a failover operation between elements of Clearly Cloud's core infrastructure. This impacted Canada customers' ability to register phones and place calls for approximately 4 minutes.
Most elements of Clearly Cloud's infrastructure are designed with several redundancies and failover occurring seamlessly without impact to customer operations. In this case, the initial failover operation completed as expected, but the backup components did not handle the traffic they received as intended.
Both the cause of the failover and the issue which caused the backup components to properly handle traffic have been identified. Improvements have been planned which should prevent similar failures.