Target Release: OpenShift 4.13 / CRI-O v1.26

There are a few metrics which were introduced in CRI-O aimed at reducing the higher cardinality of labels. The metrics with higher cardinality were deprecated (and we decided to keep them active for up to 2 releases before being removed) in favour of the new ones.

The following deprecated metrics would be needed to be removed in OCP v4.13 / CRI-O v1.26:

• crio_operations
• crio_operations_latency_microseconds_total
• crio_operations_latency_microseconds
• crio_operations_errors
• crio_image_pulls_by_digest
• crio_image_pulls_by_name
• crio_image_pulls_by_name_skipped
• crio_image_pulls_successes
• crio_image_pulls_failures
• crio_image_layer_reuse
• crio_containers_oom{}{}

Ref: https://github.com/cri-o/cri-o/blob/release-1.23/tutorials/metrics.md

Sub-tasks for this story:

• Remove those deprecated metrics from CRI-O code (https://github.com/cri-o/cri-o/tree/main/server/metrics)
• Verify in MCO default template containing crio.conf; in case any of the deprecated metrics exist, remove them from the conf