# 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 !c.enabled {
		return info, nil
	}

	info.Enabled = true
	info.Name = c.state.Name
	info.Sites = make([]madmin.PeerInfo, 0, len(c.state.Peers))
	for _, peer := range c.state.Peers {
		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
}

./mc ilm rule list sitea/bucket

## Check ilm expiry flag
./mc admin replicate info sitea --json
flag1=$(./mc admin replicate info sitea --json | jq '.sites[0]."replicate-ilm-expiry"')
flag2=$(./mc admin replicate info sitea --json | jq '.sites[1]."replicate-ilm-expiry"')
if [ "$flag1" != "true" ]; then
	echo "BUG: Expected ILM expiry replication not set for 'sitea'"
	exit 1
fi
if [ "$flag2" != "true" ]; then

	}

	// 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)

	if objectAPI == nil {
		return
	}

	var sites []madmin.PeerSite
	if err := parseJSONBody(ctx, r.Body, &sites, cred.SecretKey); err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	opts := getSRAddOptions(r)
	status, err := globalSiteReplicationSys.AddPeerClusters(ctx, sites, opts)
	if err != nil {
		adminLogIf(ctx, err)

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"},

  ).int().default(DEFAULT_TIMEOUT)

  val followRedirects: Boolean by option("-L", "--location", help = "Follow redirects").flag()

  val allowInsecure: Boolean by option("-k", "--insecure", help = "Allow connections to SSL sites without certs").flag()

  val showHeaders: Boolean by option("-i", "--include", help = "Include protocol headers in the output").flag()

  // PEM files for root certificates of Comodo and Entrust. These two CAs are sufficient to view
  // https://publicobject.com (Comodo) and https://squareup.com (Entrust). But they aren't
  // sufficient to connect to most HTTPS sites including https://godaddy.com and https://visa.com.
  // Typically developers will need to get a PEM file from their organization's TLS administrator.
  val comodoRsaCertificationAuthority =
    """
    -----BEGIN CERTIFICATE-----

		return errServerNotInitialized
	}
	info, err := globalSiteReplicationSys.GetClusterInfo(ctx)
	if err != nil {
		return err
	}
	if !info.Enabled {
		return nil
	}
	for _, peer := range info.Sites {
		if peer.DeploymentID == globalDeploymentID() {
			continue
		}
		rs, err := loadSiteResyncMetadata(ctx, objAPI, peer.DeploymentID)
		if err != nil {
			return err
		}
		sm.Lock()

        return when (parent) {
            /**
             * NON-EXPRESSION PARENTS
             */
            // KtValueArguments are a container for call-sites, and use exactly the
            // argument expression they wrap.
            is KtValueArgument ->
                parent.getArgumentExpression() == child

            is KtDelegatedSuperTypeEntry ->