What are /healthz checks and how does OpenShift Container Platform use them?

Solution In Progress - Updated -

Issue

In OpenShift Container Platform 4.x and 3.x containers can become unhealthy over time due to config issues, connection failures, Or external dependencies failing. OCP has multiple method for checking the health of a container but one of the more important one is executed through the /healthz endpoint. The HTTP check.

Environment

OpenShift Container Platform 4.x
OpenShift Container Platform 3.x

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