- New metric `kubelet_pleg_last_seen_seconds` to aid diagnosis of PLEG not healthy issues. ([#86251](https://github.com/kubernetes/kubernetes/pull/86251), [@bboreham](https://github.com/bboreham)) [SIG Node]

### Other (Bug, Cleanup or Flake)

* A new flag "progress-report-url" has been added to the test context which allows progress information about the test run to be sent to a webhook. In addition, this information is printed to stdout to aid in users watching the logs. ([#84524](https://github.com/kubernetes/kubernetes/pull/84524), [@johnSchnake](https://github.com/johnSchnake))

concurrent log rotatation via `kubelet` using a configuration entity of `containerLogMaxWorkers` which controls the maximum number of concurrent rotation that can be performed and an interval configuration of `containerLogMonitorInterval` that can aid is configuring the monitoring duration to best suite your cluster's log generation standards. ([#114301](https://github.com/kubernetes/kubernetes/pull/114301), [@harshanarayana](https://github.com/harshanarayana)) [SIG API Machinery, Node and Testing]...

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