![head](https://raw.githubusercontent.com/minio/minio/master/docs/bucket/replication/HEAD_bucket_replication.png)

## Replica Modification sync

that they span multiple clusters. Creating a Federated HPA targeting
multiple clusters ensures that cluster-level autoscalers are
consistently deployed across those clusters, and dynamically managed
to ensure that autoscaling can occur optimially in all clusters,
within a set of global constraints on the total number of replicas
permitted across all clusters.  If replicas are not

#### Multicluster

Various controllers read from multiple clusters.

This is rooted in the Multicluster Secret controller, which reads `kubeconfig` files (stored as `Secrets`), and creating Kubernetes clients for each. The controller allows registering handlers which can process Add/Update/Delete of clusters.

This has two implementations:

  * Fix problems with >2 security groups
* GCP:
  * Enable using gcr.io as a Docker registry mirror.
  * Make bigger master root disks in GCE for large clusters.
  * Change default clusterCIDRs from /16 to /14 allowing 1000 Node clusters by default.
  * Allow Debian Jessie on GCE.
  * Node problem detector addon pod detects and reports kernel deadlocks.
* OpenStack
  * Provider added.
* VSphere:

	clusterInfos, err := globalSiteReplicationSys.GetClusterInfo(ctx)
	if err != nil {
		return madmin.SiteNetPerfNodeResult{Error: err.Error()}
	}

	// Scale the number of connections from 32 -> 4 from small to large clusters.
	connectionsPerPeer := 3 + (29+len(clusterInfos.Sites)-1)/len(clusterInfos.Sites)

	errStr := ""
	var wg sync.WaitGroup

	for _, info := range clusterInfos.Sites {
		// skip self

                    }
                  }
                ],
                "include_request_attempt_count": true
              }
            ],
            "validate_clusters": false
          },
          "last_updated": "2022-03-04T07:18:49.007Z"
        }
      ]
    }
  ]

{
  "configs": [
    {
      "@type": "type.googleapis.com/envoy.admin.v3.ClustersConfigDump",
      "version_info": "2024-03-04T08:37:44Z/4",
      "dynamic_active_clusters": [
        {
          "cluster": {
            "@type": "type.googleapis.com/envoy.config.cluster.v3.Cluster",
            "name": "inbound-vip|9999|http|ratings.default.svc.cluster.local",
            "type": "EDS",
            "transport_socket": {

* GCE: Fix to make the built-in `kubernetes` service properly point to the master's load balancer address in clusters that use multiple master VMs. ([#63696](https://github.com/kubernetes/kubernetes/pull/63696), [@grosskur](https://github.com/grosskur))

        }
    ]
}
```

## 4. Enable ILM transition feature

* **[beta]** `kubefed` has graduated to beta: supports hosting federation on on-prem clusters, automatically configures `kube-dns` in joining clusters and allows passing arguments to federation components.

### Internal Storage Layer