* Allow kubernetes components to react to SIGTERM signal and shutdown gracefully. ([#57756](https://github.com/kubernetes/kubernetes/pull/57756), [@mborsz](https://github.com/mborsz))

func (s *replicationResyncer) PersistToDisk(ctx context.Context, objectAPI ObjectLayer) {
	resyncTimer := time.NewTimer(resyncTimeInterval)
	defer resyncTimer.Stop()

	// For each bucket name, store the last timestamp of the
	// successful save of replication status in the backend disks.
	lastResyncStatusSave := make(map[string]time.Time)

	for {
		select {
		case <-resyncTimer.C:

- In order to enable dual-stack support within kubeadm and kubernetes components, as part of the init config file, the user should set feature-gate `IPv6DualStack=true` in the ClusterConfiguration. Additionally, for each worker node, the user should set the feature-gate for kubelet using either `nodeRegistration.kubeletExtraArgs` or `KUBELET_EXTRA_ARGS`. ([#80531](https://github.com/kubernetes/kubernetes/pull/80531), [@Arvinderpal](https://github.com/Arvinderpal))...

Recreate the relevant LoadBalancer services, or add a new tag 'kubernetes-cluster-name: <cluster-name>' manually for existing public IPs.
Configure each cluster with a different cluster name using `kube-controller-manager --cluster-name=<cluster-name>` ([#77630](https://github.com/kubernetes/kubernetes/pull/77630), [@feiskyer](https://github.com/feiskyer))

    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(2)
  }

  /**
   * Each OkHttpClient used to get its own instance of NullProxySelector, and because these weren't
   * equal their connections weren't pooled. That's a nasty performance bug!
   *
   * https://github.com/square/okhttp/issues/5519

)

// SetUpOpenIDs - sets up one or more OpenID test servers using the test OpenID
// container and canned data from https://github.com/minio/minio-ldap-testing
//
// Each set of client app params corresponds to a separate openid server, and
// the i-th server in this will be applied the i-th policy in `rolePolicies`. If
// a rolePolicies entry is an empty string, that server will be configured as

- Number of errors reported to the metric `storage_operation_duration_seconds_count` for emptyDir decreased significantly because previously one error was reported for each projected volume created. ([#117022](https://github.com/kubernetes/kubernetes/pull/117022), [@mpatlasov](https://github.com/mpatlasov)) [SIG Storage]

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		errMap:     errMap,
		summaryErr: c.toErrorFromErrMap(errMap, actionName),
	}
}

// concDo calls actions concurrently. selfActionFn is run for the current
// cluster and peerActionFn is run for each peer replication cluster.
func (c *SiteReplicationSys) concDo(selfActionFn func() error, peerActionFn func(deploymentID string, p madmin.PeerInfo) error, actionName string) error {
	depIDs := make([]string, 0, len(c.state.Peers))

- Added field-selector option for `kubectl top pod` ([#102155](https://github.com/kubernetes/kubernetes/pull/102155), [@lauchokyip](https://github.com/lauchokyip)) [SIG CLI]
- Added new metrics about API Priority and Fairness.  Each one has a label `priority_level`.  The last two also have a label `bound` taking values `min` and `max.
  - apiserver_flowcontrol_current_r: R(the time of the last change in state of the queues)