CRI-O v1.21.2

The release notes have been generated for the commit range v1.21.1…cdc4f56 on Mon, 30 Aug 2021 09:42:15 UTC.

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CNI plugins are now passed a K8S_POD_UID environment variable containing the pod UID this sandbox was started for. (#5028, @dcbw)

Allow users to customize conmon’s resources if a pod is in a workload. (#4980, @haircommander)
Fix a bug where a container exec process received a little less time than the timeout provided (#5093, @haircommander)
Fix a performance regression with exec probes (#5162, @haircommander)
Fix potential panic when reopening a container’s log (#5213, @haircommander)
Fixed “layer not known” issue during image pull for corrupted layers.json files. (#5015, @saschagrunert)
Reuse connection when connecting to dbus, as well as reattempt the connection if it fails temporarily (#4986, @haircommander)

ExecSync requests now don’t use conmon, instead calling the runtime directly, which reduces overhead. (#4962, @openshift-cherrypick-robot)
Fix a bug where an exec sync timeout would fail to cleanup the runtime exec process (#5002, @openshift-cherrypick-robot)
Fix an RSS regression with exec sync requests (#5262, @haircommander)
Fix an issue where a container started with a terminal fails on exec sync calls (#5121, @openshift-cherrypick-robot)
Wait for CNI plugins to be ready before starting non-host-network pods, to allow pods that may run CNI plugins to start faster (#5084, @openshift-cherrypick-robot)

Nothing has changed.