This morning our hosting provider conducted an update of our kubernetes hosting environment to a newer version automatically, they made the update a required update. Unfortunately our ingress controller ( the software inside kubernetes that directs traffic ) was of a version that was incompatible with the updated Kubernetes software. This caused a conflict and network traffic was dropped causing connection issues to the application. Removing, Reinstalling and then updating the DNS to point to the load balancer resolved the issue. Steps have been implemented to mitigate this in the future as part of our sms process.