#### Cluster federation
* Features:

  * Adds annotations to all Federation objects created by kubefed. ([#42683](https://github.com/kubernetes/kubernetes/pull/42683), [@perotinus](https://github.com/perotinus))

# Federation Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) *Federation feature is deprecated and should be avoided for future deployments*

This document explains how to configure MinIO with `Bucket lookup from DNS` style federation.

## Get started

### 1. Prerequisites

Install MinIO - [MinIO Quickstart Guide](https://min.io/docs/minio/linux/index.html#quickstart-for-linux).

### 2. Run MinIO in federated mode

	for _, s := range secrets {
		if includeConfigType {
			s.Name = fmt.Sprintf("secret/%s", s.Name)
		}
		// If all secrets have a trust domain, we are probably dealing with trust domain federation, so print trust domains.
		// Otherwise, do not do that, because we do not know how to determine that information from the certificate,
		// so the output would be confusing.
		if !hasUnknownTrustDomain {

						globalDomainNames, err))
				}
			}
		}
	}

	// Bucket federation is 'true' only when IAM assets are not namespaced
	// per tenant and all tenants interested in globally available users
	// if namespace was requested such as specifying etcdPathPrefix then
	// we assume that users are interested in global bucket support
	// but not federation.
	globalBucketFederation = etcdCfg.PathPrefix == "" && etcdCfg.Enabled

soy

// spa : 2019-09-19 Asia Spa and Wellness Promotion Council Limited
spa

// space : 2014-04-03 Radix FZC
space

// sport : 2017-11-16 Global Association of International Sports Federations (GAISF)
sport

// spot : 2015-02-26 Amazon Registry Services, Inc.
spot

// srl : 2015-05-07 InterNetX, Corp
srl

// stada : 2014-11-13 STADA Arzneimittel AG
stada

- Temporary credentials have a limited lifetime, there is no need to rotate them or explicitly revoke them. Expired temporary credentials cannot be reused.

## Identity Federation

| AuthN                                                                                  | Description                                                                                                                                   |

	// Cluster replication manager.
	globalSiteReplicationSys SiteReplicationSys

	// Cluster replication resync metrics
	globalSiteResyncMetrics *siteResyncMetrics

	// Is set to true when Bucket federation is requested
	// and is 'true' when etcdConfig.PathPrefix is empty
	globalBucketFederation bool

	// Allocated DNS config wrapper over etcd client.
	globalDNSConfig dns.Store

management (beyond our initial Federation approach), and preparing
to release Federation for general availability ('GA').

[SIG Multi-cluster]: https://github.com/kubernetes/community/tree/master/sig-federation

### SIG Node

[SIG Node][] is responsible for the components that support the controlled
interactions between pods and host resources, and manage the lifecycle
of pods scheduled on a node.

				continue
			}

			// No IPs seem to intersect, this means that bucket exists but has
			// different IP addresses perhaps from a different deployment.
			// bucket names are globally unique in federation at a given
			// path prefix, name collision is not allowed. We simply log
			// an error and continue.
			bucketsInConflict.Add(bucket)
		}
	}

	// Add/update buckets that are not registered with the DNS

Kubernetes as stateful containers with local storage (JBOD/JBOF) mapped as persistent local volumes. This architecture enables multi-tenant MinIO, allowing isolation of data between customers.

MinIO also supports multi-cluster, multi-site federation similar to AWS regions and tiers. Using MinIO Information Lifecycle Management (ILM), you can configure data to be tiered between NVMe based hot storage, and HDD based warm storage. All data is encrypted with per-object key. Access Control and Identity...