Add grpc health probe implementation to core #680
Merged
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What this PR does / why we need it:
Changing the health probe for feast core to use grpc, and test simple functionality (retrieving projects) instead of just pinging the db.
This works well as a readiness probe, but not so much as a liveness probe since even in the event it fails, restarting the service will not help solve the problem. Additionally, grpc health probe does not allow us to differentiate between the two types of probes.
For now I have the liveness probe disabled by default in the helm chart, but I'm happy to take any suggestions regarding the problems above ^
Which issue(s) this PR fixes:
Fixes #514
Does this PR introduce a user-facing change?: