* New SchedulerExtender enables users to implement custom
out-of-(the-scheduler)-process scheduling predicates and priority functions,
for example to schedule pods based on resources that are not directly managed

* Kubelet won't evict a static pod with priority `system-node-critical` upon resource pressure. ([#74222](https://github.com/kubernetes/kubernetes/pull/74222), [@Huang-Wei](https://github.com/Huang-Wei))

## Changelog since v1.19.10

## Changes by Kind

### API Change

- We have added a new Priority & Fairness rule that exempts all probes (/readyz, /healthz, /livez) to prevent 

        </field>
        <field xml.transient="true">
          <name>priority</name>
          <version>4.0.0+</version>
          <type>int</type>
          <description>
            <![CDATA[
            The priority of this execution compared to other executions which are bound to the same phase.

- Changed Linux swap handling to restrict access to swap for containers in high priority Pods.
  New Pods that have a node- or cluster-critical priority are prohibited from accessing swap on Linux,

- Restores priority of static control plane pods in the cluster/gce/manifests control-plane manifests ([#89970](https://github.com/kubernetes/kubernetes/pull/89970), [@liggitt](https://github.com/liggitt)) [SIG Cluster Lifecycle and Node]

### Bug or Regression

- ## Changelog
  
  ### General
  - Fix priority expander falling back to a random choice even though there is a higher priority option to choose
  - Clone `kubernetes/kubernetes` in `update-vendor.sh` shallowly, instead of fetching all revisions

* azure: add PrimaryAvailabilitySet to config, only use nodes in that set in the loadbalancer pool ([#34526](https://github.com/kubernetes/kubernetes/pull/34526), [@colemickens](https://github.com/colemickens))
* azure: lower log priority for skipped nic update message ([#34730](https://github.com/kubernetes/kubernetes/pull/34730), [@colemickens](https://github.com/colemickens))



# v1.4.3

* NodeController waits for informer sync before doing anything ([#34809](https://github.com/kubernetes/kubernetes/pull/34809), [@gmarek](https://github.com/gmarek))
* azure: lower log priority for skipped nic update message ([#34730](https://github.com/kubernetes/kubernetes/pull/34730), [@colemickens](https://github.com/colemickens))

  [@derekwaynecarr](https://github.com/derekwaynecarr))
* Nodes can now report two additional address types in their status: InternalDNS
  and ExternalDNS. The apiserver can use --kubelet-preferred-address-types to
  give priority to the type of address it uses to reach nodes.
  ([#34259](https://github.com/kubernetes/kubernetes/pull/34259), [@liggitt](https://github.com/liggitt))

#### Bug fixes