I am having problems deploying a Java .war application in Tomcat on Kubernetes.
I have a Docker image based on tomcat:8.5.40-jre8 containing two Tomcat .war webapps, One at ROOT and one with its own path. When I pull and run this Docker image locally on my Mac everything works just fine. However when I deploy the image to our Microsoft Azure Kubernetes Service the ROOT webapp only responds with a 404. If I connect a terminal to the running container I can see Tomcat has unpacked the .war file.
The issue started when I updated the Kubernetes version using the Azure portal, but when I created a second Azure Kubernetes Service with a lower version the issue still exists.
It does not seem to be a network issue. When i connect a terminal to the running image on Kubernetes and curl localhost i get a 404, but when i do the same on my local machine i get the page i expect.
The same Docker image has worked before and the cluster runs another almost identical service right now without any problems.
How is it possible that the Docker image works on my machine, but not when deployed to the AKS?
Any help would be greatly appreciated! Kind regards,