export MC_HOST_sited=http://minio:minio123@127.0.0.1:9008

./mc ready sitea
./mc ready siteb
./mc ready sitec
./mc ready sited

./mc mb sitea/bucket
./mc mb sitec/bucket

## Setup site replication
./mc admin replicate add sitea siteb --replicate-ilm-expiry

sleep 10s

## Add warm tier

		info.Sites = append(info.Sites, peer)
	}
	sort.Slice(info.Sites, func(i, j int) bool {
		return info.Sites[i].Name < info.Sites[j].Name
	})

	info.ServiceAccountAccessKey = c.state.ServiceAccountAccessKey
	return info, nil
}

const (
	makeBucketWithVersion   = "MakeBucketWithVersioning"
	configureReplication    = "ConfigureReplication"
	deleteBucket            = "DeleteBucket"

# Automatic Site Replication

This feature allows multiple independent MinIO sites (or clusters) that are using the same external IDentity Provider (IDP) to be configured as replicas. In this situation the set of replica sites are referred to as peer sites or just sites. When site-replication is enabled on a set of sites, the following changes are replicated to all other sites:

- Creation and deletion of buckets and objects

	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}
	// Report the ILMExpiryStats only if at least one site has replication of ILM expiry enabled
	var replicateILMExpiry bool
	for _, site := range info.Sites {
		if site.ReplicateILMExpiry {
			replicateILMExpiry = true
			break
		}
	}
	if !replicateILMExpiry {
		// explicitly send nil for ILMExpiryStats

func TestGetMissingSiteNames(t *testing.T) {
	testCases := []struct {
		currSites []madmin.PeerInfo
		oldDepIDs set.StringSet
		newDepIDs set.StringSet
		expNames  []string
	}{
		// Test1: missing some sites in replicated setup
		{
			[]madmin.PeerInfo{
				{Endpoint: "minio1:9000", Name: "minio1", DeploymentID: "dep1"},
				{Endpoint: "minio2:9000", Name: "minio2", DeploymentID: "dep2"},

	}

	// 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
		if globalDeploymentID() == info.DeploymentID {
			continue
		}
		info := info
		wg.Add(connectionsPerPeer)

For active-active replication, automatic failover occurs on `GET/HEAD` operations if object or object version requested qualifies for replication and is missing on one site, but present on the other. This allows the applications to take full advantage of two-way replication even before the two sites get fully synced.

	"sync"
	"time"

	"github.com/minio/madmin-go/v3"
)

//go:generate msgp -file=$GOFILE

// SiteResyncStatus captures current replication resync status for a target site
type SiteResyncStatus struct {
	Version int `json:"version" msg:"v"`
	// Overall site status
	Status                        ResyncStatusType            `json:"st" msg:"ss"`
	DeplID                        string                      `json:"dId" msg:"did"`

	@echo "Running tests for replicating three sites"

test-site-replication-ldap: install-race ## verify automatic site replication
	@echo "Running tests for automatic site replication of IAM (with LDAP)"
	@(env bash $(PWD)/docs/site-replication/run-multi-site-ldap.sh)

test-site-replication-oidc: install-race ## verify automatic site replication

func (b BucketMetadata) ObjectLocking() bool {
	return b.LockEnabled || (b.objectLockConfig != nil && b.objectLockConfig.Enabled())
}

// SetCreatedAt preserves the CreatedAt time for bucket across sites in site replication. It defaults to
// creation time of bucket on this cluster in all other cases.
func (b *BucketMetadata) SetCreatedAt(createdAt time.Time) {
	if b.Created.IsZero() {
		b.Created = UTCNow()
	}