HTTPStatusCode: http.StatusNotImplemented,
	},
	ErrPreconditionFailed: {
		Code:           "PreconditionFailed",
		Description:    "At least one of the pre-conditions you specified did not hold",
		HTTPStatusCode: http.StatusPreconditionFailed,
	},
	ErrRequestTimeTooSkewed: {
		Code:           "RequestTimeTooSkewed",
		Description:    "The difference between the request time and the server's time is too large.",

- The kube-controller-manager managed signers can now have distinct signing certificates and keys.  See the help about `--cluster-signing-[signer-name]-{cert,key}-file`.  `--cluster-signing-{cert,key}-file` is still the default. ([#90822](https://github.com/kubernetes/kubernetes/pull/90822), [@deads2k](https://github.com/deads2k)) [SIG API Machinery, Apps and...

- `--log-flush-frequency` had no effect in several commands or was missing. Help and warning texts were not always using the right format for a command (`add_dir_header` instead of `add-dir-header`). Fixing this included cleaning up flag handling in component-base/logs: that package no longer adds flags to the global flag sets....

ng","ObjectFunctionString","support","isFunction","obj","nodeType","item","isWindow","preservedScriptAttributes","type","src","nonce","noModule","DOMEval","code","node","doc","i","val","script","createElement","text","getAttribute","setAttribute","head","appendChild","parentNode","removeChild","toType","version","rhtmlSuffix","jQuery","selector","context","fn","init","isArrayLike","length","nodeName","elem","name","toLowerCase","prototype","jquery","constructor","toArray","get","num","pushStack"...

    DummyEntry<Object, Object> entryThree =
        createDummyEntry(keyThree, hashThree, valueThree, entryTwo);

    // alone
    assertThat(segment.removeEntryFromChain(entryOne, entryOne)).isNull();

    // head
    assertThat(segment.removeEntryFromChain(entryTwo, entryTwo)).isSameInstanceAs(entryOne);

    // middle
    ReferenceEntry<Object, Object> newFirst = segment.removeEntryFromChain(entryThree, entryTwo);

    DummyEntry<Object, Object> entryThree =
        createDummyEntry(keyThree, hashThree, valueThree, entryTwo);

    // alone
    assertThat(segment.removeEntryFromChain(entryOne, entryOne)).isNull();

    // head
    assertThat(segment.removeEntryFromChain(entryTwo, entryTwo)).isSameInstanceAs(entryOne);

    // middle
    ReferenceEntry<Object, Object> newFirst = segment.removeEntryFromChain(entryThree, entryTwo);

	for {
		n, err := io.CopyN(xioutil.Discard, r.Body, 128*humanize.KiByte)
		if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
			// would mean the network is not stable. Logging here will help in debugging network issues.
			if time.Since(connectTime) < (globalNetPerfMinDuration - time.Second) {
				adminLogIf(ctx, err)
			}
		}
		totalRx += n

- Fixes a bug where Services using finalizers may hold onto ClusterIP and/or NodePort allocated resources for longer than expected if the finalizer is removed using the status subresource ([#120655](https://github.com/kubernetes/kubernetes/pull/120655), [@aojea](https://github.com/aojea)) [SIG Network...

- When the kubelet is watching a ConfigMap or Secret purely in the context of setting environment variables
  for containers, only hold that watch for a defined duration before cancelling it. This change reduces the CPU

- Kubeadm: a new command `kubeadm alpha certs check-expiration` was created in order to help users in managing expiration for local PKI certificates ([#77863](https://github.com/kubernetes/kubernetes/pull/77863), [@fabriziopandini](https://github.com/fabriziopandini))

### Misc