## 1. Overview

The SMB Witness Protocol enables rapid notification of resource changes in a clustered file server environment. It provides fast failover capabilities by allowing clients to register for notifications about server node availability, share movement, and other critical cluster events.

## 2. Protocol Specification Reference

- **MS-SWN**: Service Witness Protocol Specification

* If you use one of the kube-dns replication controller manifest in `cluster/saltbase/salt/kube-dns`, i.e. `cluster/saltbase/salt/kube-dns/{skydns-rc.yaml.base,skydns-rc.yaml.in}`, either substitute one of `__PILLAR__FEDERATIONS__DOMAIN__MAP__` or `{{ pillar['federations_domain_map'] }}` with the corresponding federation name to domain name value or remove them if you do not support cluster federation at this time. If you plan to substitute the parameter with its value, here is...

- Kubeadm: during "join", don't re-add an etcd member if it already exists in the cluster. ([#92118](https://github.com/kubernetes/kubernetes/pull/92118), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

### Expanding existing distributed setup

MinIO supports expanding distributed erasure coded clusters by specifying new set of clusters on the command-line as shown below:

```sh
export MINIO_ROOT_USER=<ACCESS_KEY>
export MINIO_ROOT_PASSWORD=<SECRET_KEY>
minio server http://host{1...n}/export{1...m} http://host{o...z}/export{1...m}
```

	opts.ReplicateILMExpiry = r.Form.Get("replicateILMExpiry") == "true"
	return opts
}

// SRPeerJoin - PUT /minio/admin/v3/site-replication/join
//
// used internally to tell current cluster to enable SR with
// the provided peer clusters and service account.
func (a adminAPIHandlers) SRPeerJoin(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	objectAPI, cred := validateAdminReq(ctx, w, r, policy.SiteReplicationAddAction)

feature, you might need to take some action immediately after upgrading. In multi-tenant clusters where not all users are trusted, you are advised to create appropriate quotas for two default priority classes, system-cluster-critical and system-node-critical, which are added to clusters by default. `ResourceQuota` should be created to limit users from creating Pods at these priorities if not all users of your cluster are trusted. We do not advise disabling this feature because critical system Pods rely...

[@rosti](https://github.com/rosti)) Courtesy of SIG Cluster Lifecycle, SIG Release, and SIG Testing
- kubeadm - Feature-gates HighAvailability, SelfHosting, CertsInSecrets are now deprecated and can no longer be used for new clusters. Cluster updates using above feature-gates flag is not supported. ([#67786](https://github.com/kubernetes/kubernetes/pull/67786), [@fabriziopandini](https://github.com/fabriziopandini)) Courtesy of SIG Cluster Lifecycle

- The kube-apiserver exposes four new metrics to inform about errors on the clusterIP and nodePort allocation logic ([#120843](https://github.com/kubernetes/kubernetes/pull/120843),...

[https://github.com/kubernetes/kubernetes/issues/49213](https://github.com/kubernetes/kubernetes/issues/49213) sig-cluster-lifecycle has decided to phase out the cluster/ directory over the next couple of releases in favor of deployment automations maintained outside of the core repo and outside of kubernetes orgs. ([@kubernetes/sig-cluster-lifecycle-misc](https://github.com/orgs/kubernetes/teams/sig-cluster-lifecycle-misc))

    * Remove deprecated ContainerVM support from GCE kube-up.  ([#58247...

  annotations: {{- toYaml .Values.consoleService.annotations | nindent 4 }}
  {{- end }}
spec:
  type: {{ .Values.consoleService.type }}
  {{- if and (eq .Values.consoleService.type "ClusterIP") .Values.consoleService.clusterIP }}
  clusterIP: {{ .Values.consoleService.clusterIP }}
  {{- end }}
  {{- if or (eq .Values.consoleService.type "LoadBalancer") (eq .Values.consoleService.type "NodePort") }}