- Kubeadm: added a new preflight check `ContainerRuntimeVersion ` to validate if the installed container runtime supports the RuntimeConfig gRPC method. If the container runtime does not support the RuntimeConfig gRPC method, kubeadm will print a warning message. 
  

- `kubectl exec` and `kubectl attach` now honor the `--quiet` flag which suppresses output from the local binary that could be confused by a script with the remote command output (all non-failure output is hidden). In addition, print inline with exec and attach the list of alternate containers when we default to the first spec.container. ([#99004](https://github.com/kubernetes/kubernetes/pull/99004), [@smarterclayton](https://github.com/smarterclayton)) [SIG CLI]

 
## Changes by Kind

### Deprecation

- 'kubeadm: marked the sub-phase of ''init kubelet-finilize'' called ''experimental-cert-rotation''
  as deprecated and print a warning if it is used directly; it will be removed in

- Kube-proxy: delete stale conntrack UDP entries for loadbalancer ingress IP. ([#104009](https://github.com/kubernetes/kubernetes/pull/104009), [@aojea](https://github.com/aojea))
- Kube-scheduler now doesn't print any usage message when unknown flag is specified. ([#104503](https://github.com/kubernetes/kubernetes/pull/104503), [@sanposhiho](https://github.com/sanposhiho))

  in `alpha`, we will recognize the prior annotation. This migration support will be removed in `beta`/`GA`. ([#118942](https://github.com/kubernetes/kubernetes/pull/118942), [@justinsb](https://github.com/justinsb))
- `kubectl` will not print events if `--show-events=false` argument is passed to
  describe PVC subcommand. ([#120380](https://github.com/kubernetes/kubernetes/pull/120380), [@MaGaroo](https://github.com/MaGaroo))

- Kubectl: add `LAST RESTART` column to `kubectl get pods` output. ([#100142](https://github.com/kubernetes/kubernetes/pull/100142), [@Ethyling](https://github.com/Ethyling))
- Kubemark's hollow-node will now print flags before starting. ([#101181](https://github.com/kubernetes/kubernetes/pull/101181), [@mm4tt](https://github.com/mm4tt))

- Fix: After a Node is down and take some time to get back to up again, the mount point of the evicted Pods cannot be cleaned up successfully. (#111933) Meanwhile Kubelet will print the log `Orphaned pod "xxx" found, but error not a directory occurred when trying to remove the volumes dir` every 2 seconds. (#105536) ([#116134](https://github.com/kubernetes/kubernetes/pull/116134), [@cvvz](https://github.com/cvvz)) [SIG Node and...

* MESOS: Support a pre-installed km binary at a well known, agent-local path ([#28447](https://github.com/kubernetes/kubernetes/pull/28447), [@k82cn](https://github.com/k82cn))
* kubectl should print usage at the bottom ([#25640](https://github.com/kubernetes/kubernetes/pull/25640), [@dims](https://github.com/dims))

*   Added --print-join-command flag for kubeadm token create. ([#56185](https://github.com/kubernetes/kubernetes/pull/56185),[ @mattmoyer](https://github.com/mattmoyer))

- kubeadm: enable secure serving for the kube-scheduler ([#80951](https://github.com/kubernetes/kubernetes/pull/80951), [@neolit123](https://github.com/neolit123))
- kubeadm: print the stack trace of an error for klog level `--v>=5` ([#80937](https://github.com/kubernetes/kubernetes/pull/80937), [@neolit123](https://github.com/neolit123))