* The kubelet uses a new release 3.1 of the pause container with the Docker runtime. This version will clean up orphaned zombie processes that it inherits. ([#57517](https://github.com/kubernetes/kubernetes/pull/57517), [@verb](https://github.com/verb))

- New configuration is introduced to the kubelet that allows it to track container...

really, you MUST read this before you upgrade)

- Kube-proxy's IPVS proxy mode no longer sets the net.ipv4.conf.all.route_localnet sysctl parameter. Nodes upgrading will have net.ipv4.conf.all.route_localnet set to 1 but new nodes will inherit the system default (usually 0). If you relied on any behavior requiring net.ipv4.conf.all.route_localnet, you must set ensure it is enabled as kube-proxy will no longer set it automatically. This change helps to further mitigate CVE-2020-8558. ([...

- Fixed regression in CPUManager that it will release exclusive CPUs in app containers inherited from init containers when the init containers were removed. ([#104837](https://github.com/kubernetes/kubernetes/pull/104837), [@eggiter](https://github.com/eggiter))

- Fixes regression in CPUManager that had the (rare) possibility to release exclusive CPUs in app containers inherited from init containers. ([#90419](https://github.com/kubernetes/kubernetes/pull/90419), [@klueska](https://github.com/klueska)) [SIG Node]

* Mark image as deliberately optional in v1 Container struct.  Many objects in the Kubernetes API inherit the container struct and only Pods require the field to be set. ([#48406](https://github.com/kubernetes/kubernetes/pull/48406), [@gyliu513](https://github.com/gyliu513))

* Mark image as deliberately optional in v1 Container struct.  Many objects in the Kubernetes API inherit the container struct and only Pods require the field to be set. ([#48406](https://github.com/kubernetes/kubernetes/pull/48406), [@gyliu513](https://github.com/gyliu513))

	BlockSize() int
	Encrypt(src, dst []byte)
	Decrypt(src, dst []byte)
}
</pre>

<p>
A defined type may have <a href="#Method_declarations">methods</a> associated with it.
It does not inherit any methods bound to the given type,
but the <a href="#Method_sets">method set</a>
of an interface type or of elements of a composite type remains unchanged:
</p>

<pre>