Enable autopy-server to replicate across nodes - #1317
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Currently the autopy-server stores the autograder files on the local file-system via flask-admin. In Kubernetes, the file-system is managed via a persistent volume claim. However, the volume can only attach to a single node which means that all autopy-server pods have to be scheduled to the same node which limits fault tolerance and scalability. This change switches the autopy-server to use the new direct Azure Blob Storage integration for flask-admin which stores the autograder files in a non-local storage. As such, we can remove the persistent volume claim and autopy-server pods can now be scheduled to arbitrary nodes.
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Currently the autopy-server stores the autograder files on the local
file-system via flask-admin. In Kubernetes, the file-system is managed
via a persistent volume claim. However, the volume can only attach to a
single node which means that all autopy-server pods have to be scheduled
to the same node which limits fault tolerance and scalability.
This change switches the autopy-server to use the new direct Azure Blob
Storage integration for flask-admin which stores the autograder files in
a non-local storage. As such, we can remove the persistent volume claim
and autopy-server pods can now be scheduled to arbitrary nodes.
This issue was found by @tmbgreaves.