support liveness probe configure in kubernetes yaml

[yylt]

Describe the feature you'd like to have

When the liveness check fails, the container should be restarted. Currently, the failure of the check can only be determined through the /metrics path with csi_liveness as shown below:

$ curl 10.46.1.6:8680/metrics|more
# HELP csi_liveness Liveness Probe
# TYPE csi_liveness gauge
csi_liveness 0

This is not very friendly for pod probe checks in Kubernetes. A common way to check pods is through the following method:

livenessProbe:
  httpGet:
    host: 127.0.0.1
    path: /healthz
    port: 8080
    scheme: HTTP
  failureThreshold: 8
  initialDelaySeconds: 15
  periodSeconds: 10
  successThreshold: 1
  timeoutSeconds: 15

Could you provide an endpoint for liveness to facilitate probe checks?

What is the value to the end user? (why is it a priority?)

When a health check fails, the container can be restarted instead of showing as running but not being able to do anything.

How will we know we have a good solution? (acceptance criteria)

• add new healthz endpoint, like /healthz

[Madhu-1]

@yylt is this duplicate of #1096?

[yylt]

Yes, it is indeed repetitive, there is no PR of #1096.

Additionally, could consider using the https:/kubernetes-csi/livenessprobe project replace?

[Madhu-1]

Yes i have mentioned different options in #1096, considering it am closing this as duplicate, Thank you