* Resolves spurious rollouts of workload controllers when upgrading the API server, due to incorrect defaulting of an alpha procMount field in pods ([#78883](https://github.com/kubernetes/kubernetes/pull/78883), [@liggitt](https://github.com/liggitt))

	// pick 10 nodes that precisely can send those 100 requests the first node
	// in the 10 node shard would coordinate between other 9 shards to get the
	// rest of the `99*9` requests.
	//
	// This essentially splits the workload properly and also allows for network
	// utilization to be optimal, instead of blindly throttling the way we are
	// doing below. However the changes that are needed here are a bit involved,

			if strings.HasSuffix(prefix, k) {
				return true
			}
		}
		return false
	}

	if hadoop && delimiter == SlashSeparator && maxKeys == 2 && marker == "" {
		// Optimization for Spark/Hadoop workload where spark sends a garbage
		// request of this kind
		//
		// GET /testbucket/?list-type=2&delimiter=%2F&max-keys=2&prefix=parquet%2F_SUCCESS%2F&fetch-owner=false
		//

- Removed extra pod creation expectations when daemonset fails to create pods in batches. ([#74856](https://github.com/kubernetes/kubernetes/pull/74856), [@draveness](https://github.com/draveness))
- Resolved spurious rollouts of workload controllers when upgrading the API server, due to incorrect defaulting of an alpha procMount field in pods. ([#78885](https://github.com/kubernetes/kubernetes/pull/78885), [@liggitt](https://github.com/liggitt))

### Auth

### kubeadm
* A new label and taint is used for marking the master. The label is `node-role.kubernetes.io/master=""` and the taint has the effect `NoSchedule`. Tolerate the `node-role.kubernetes.io/master="":NoSchedule` taint to schedule a workload on the master (a networking DaemonSet for example).
* The kubelet API is now secured, only cluster admins are allowed to access it.
* Insecure access to the API Server over `localhost:8080` is now disabled.