- When the kubelet fails to assign CPUs to a Pod because there less available CPUs than the Pod requests, the error message changed from
  `not enough cpus available to satisfy request` to `not enough cpus available to satisfy request: <num_requested> requested, only <num_available> available`. ([#121059](https://github.com/kubernetes/kubernetes/pull/121059), [@matte21](https://github.com/matte21))

### Failing Test

- Added DRA support for a "one-of" prioritized list of selection criteria to satisfy a device request in a resource claim. ([#128586](https://github.com/kubernetes/kubernetes/pull/128586), [@mortent](https://github.com/mortent)) [SIG API Machinery, Apps, Etcd, Node, Scheduling and Testing]

- Add a new `distribute-cpus-across-numa` option to the static `CPUManager` policy. When enabled, this will trigger the `CPUManager` to evenly distribute CPUs across NUMA nodes in cases where more than one NUMA node is required to satisfy the allocation. ([#105631](https://github.com/kubernetes/kubernetes/pull/105631), [@klueska](https://github.com/klueska))

        * Nodes must use client credentials that place them in the `system:nodes` group with a username of `system:node:<nodeName>` in order to be authorized by the node authorizer (the credentials obtained by the kubelet via TLS bootstrapping satisfy these requirements)
        * When used in combination with the `RBAC` authorization mode (`--authorization-mode=Node,RBAC`), the `system:node` role is no longer automatically granted to the `system:nodes` group.

        * Nodes must use client credentials that place them in the `system:nodes` group with a username of `system:node:<nodeName>` in order to be authorized by the node authorizer (the credentials obtained by the kubelet via TLS bootstrapping satisfy these requirements)
        * When used in combination with the `RBAC` authorization mode (`--authorization-mode=Node,RBAC`), the `system:node` role is no longer automatically granted to the `system:nodes` group.

    * to enable, kube-proxy must be have the following flags:
    * --proxy-mode=ipvs
    * --cluster-cidrs=<cidr>,<cidr>
* The apiserver now uses http/1.1 to communicate with admission webhooks, opening multiple connections to satisfy concurrent requests, and allowing spreading requests across multiple backing pods. ([#82090](https://github.com/kubernetes/kubernetes/pull/82090), [@liggitt](https://github.com/liggitt))