* Fixed a panic in `kubectl run --attach ...` when the api server failed to create the runtime object (due to name conflict, PSP restriction, etc.) ([#61713](https://github.com/kubernetes/kubernetes/pull/61713), [@mountkin](https://github.com/mountkin))

    * Rebase image on debian-base:v1.0.0
* If a pod has a running instance, the stats of its previously terminated instances will not show up in the kubelet summary stats any more for CRI runtimes like containerd and cri-o. ([#77426](https://github.com/kubernetes/kubernetes/pull/77426), [@Random-Liu](https://github.com/Random-Liu))

  - [alpha] Introducing the v1alpha1 CRI API to allow pluggable container runtimes; an experimental docker-CRI integration is ready for testing and feedback. ([docs](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-node/container-runtime-interface.md)) ([kubernetes/features#54](https://github.com/kubernetes...

* Kubelet now proxies container streaming between apiserver and container runtime. The connection between kubelet and apiserver is authenticated. Container runtime should change streaming server to serve on localhost, to make the connection between kubelet and container runtime local. ([#64006](https://github.com/kubernetes/kubernetes/pull/64006), [@Random-Liu](https://github.com/Random-Liu))

* Interaction with container runtimes is now through the CRI interface, enabling easier integration of runtimes with the kubelet. Docker remains the default runtime via Docker-CRI (which moves to beta).
  * **WARNING:** A [known issue](https://github.com/kubernetes/kubernetes/issues/44041)

cgroupDriver value in the KubeletConfiguration is now always set to "systemd" unless the user is explicit about it. This requires existing machine setups to configure the container runtime to use the "systemd" driver. Documentation on this topic can be found here: https://kubernetes.io/docs/setup/production-environment/container-runtimes/. When upgrading existing clusters / nodes using "kubeadm upgrade" the old cgroupDriver value is preserved, but in 1.22 this change will also apply to "upgrade". For more...

- github.com/opencontainers/runc: [v1.0.0-rc93 → v1.0.1](https://github.com/opencontainers/runc/compare/v1.0.0-rc93...v1.0.1)
- github.com/opencontainers/runtime-spec: [e6143ca → 1c3f411](https://github.com/opencontainers/runtime-spec/compare/e6143ca...1c3f411)
- github.com/opencontainers/selinux: [v1.8.0 → v1.8.2](https://github.com/opencontainers/selinux/compare/v1.8.0...v1.8.2)

### **Node Components**
#### Container Runtime Interface

## Runtime {#runtime}...

## Runtime {#runtime}...