Adding volume operation metrics

[verult]

Does the CSI driver need Prometheus metrics?

Possible metrics:

• GCP cloud provider calls
  • latency and error rates of GCE PD calls. We can compare the latency against the corresponding k8s volume operation latency to discover inefficiencies.
  • latency and error rates AltTokenSource oauth calls

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[davidz627]

/remove-lifecycle stale
/assign @saad-ali

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Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

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Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[davidz627]

/remove-lifecycle stale

[saad-ali]

CSI Metrics were added to the side car containers in the following PRs:

• Add prometheus metrics to CSI external-provisioner using new csi-lib-utils library kubernetes-csi/external-provisioner#388
• Add prometheus metrics to CSI external-attacher using new csi-lib-utils library kubernetes-csi/external-attacher#201
• Add prometheus metrics to CSI external-snapshotter using new csi-lib-utils library kubernetes-csi/external-snapshotter#227
• Add prometheus metrics to CSI external-resizer using new csi-lib-utils library kubernetes-csi/external-resizer#67

These PRs are available in the following sidecar releases:

• external-provisioner v1.5.0+
• external-attacher v2.1.0+
• external-snapshotter v2.0.0+
• external-resizer v0.4.0+

Distributors of this driver who want to enable the CSI Metrics should 1) ensure they deploy the correct version of the side car containers (see above), and 2) ensure the metrics-address and metrics-path flags are set for each of the sidecar containers specified above.