return &peerRESTClient{
		host: peer, restClient: restClient, gridHost: gridHost,
		gridConn: func() *grid.Connection {
			// Lazy initialization of grid connection.
			// When we create this peer client, the grid connection is likely not yet initialized.
			if gridHost == "" {
				bugLogIf(context.Background(), fmt.Errorf("gridHost is empty for peer %s", peer.String()), peer.String()+":gridHost")
				return nil
			}

	return deleteBucketLocal(ctx, bucket, opts)
}

// client to talk to peer Nodes.
type remotePeerS3Client struct {
	node  Node
	pools []int

	// Function that returns the grid connection for this peer when initialized.
	// Will return nil if the grid connection is not initialized yet.
	gridConn func() *grid.Connection
}

// S3PeerSys - S3 peer call system.
type S3PeerSys struct {
	peerClients []peerS3Client // Excludes self

		adminRouter.Methods(http.MethodPut).Path(adminVersion+"/site-replication/peer/bucket-ops").HandlerFunc(adminMiddleware(adminAPI.SRPeerBucketOps)).Queries("bucket", "{bucket:.*}").Queries("operation", "{operation:.*}")

	latestDriveStats      map[string]madmin.DiskIOStats
	latestDriveStatsMu    sync.RWMutex
	lastDriveStatsRefresh time.Time
)

// PeerResourceMetrics represents the resource metrics
// retrieved from a peer, along with errors if any
type PeerResourceMetrics struct {
	Metrics map[MetricSubsystem]ResourceMetrics
	Errors  []string
}

// ResourceMetrics is a map of unique key identifying

	istioHTTPPlaintext = []string{"istio", "istio-http/1.0", "istio-http/1.1", "istio-h2"}
	httpTLS            = []string{"http/1.0", "http/1.1", "h2c", "istio-http/1.0", "istio-http/1.1", "istio-h2"}
	tcpTLS             = []string{"istio-peer-exchange", "istio"}

	protDescrs = map[string][]string{
		"App: HTTP TLS":         httpTLS,
		"App: Istio HTTP Plain": istioHTTPPlaintext,
		"App: TCP TLS":          tcpTLS,

	HandlerRenameData2:                 storagePrefix,
}

const (
	lockPrefix      = "lockR"
	storagePrefix   = "storageR"
	bootstrapPrefix = "bootstrap"
	peerPrefix      = "peer"
	peerPrefixS3    = "peerS3"
	healPrefix      = "heal"
)

func init() {
	// Static check if we exceed 255 handler ids.
	// Extend the type to uint16 when hit.
	if handlerLast > 255 {

		s.writeErrorResponse(w, err)
		return false
	}

	diskID := r.Form.Get(storageRESTDiskID)
	if diskID == "" {
		// Request sent empty disk-id, we allow the request
		// as the peer might be coming up and trying to read format.json
		// or create format.json
		return true
	}

	storedDiskID, err := s.getStorage().GetDiskID()
	if err != nil {
		s.writeErrorResponse(w, err)
		return false

		}
		if errors.Is(nerr.Err, rest.ErrClientClosed) {
			return true
		}
	}
	if errors.Is(err, grid.ErrDisconnected) {
		return true
	}
	// More corner cases suitable for storage REST API
	switch {
	// A peer node can be in shut down phase and proactively
	// return 503 server closed error, consider it as an offline node
	case strings.Contains(err.Error(), http.ErrServerClosed.Error()):
		return true

}

// getRemoteARNForPeer returns the remote target for a peer site in site replication
func (sys *BucketTargetSys) getRemoteARNForPeer(bucket string, peer madmin.PeerInfo) string {
	sys.RLock()
	defer sys.RUnlock()
	tgts := sys.targetsMap[bucket]
	for _, target := range tgts {
		ep, _ := url.Parse(peer.Endpoint)
		if target.SourceBucket == bucket &&
			target.TargetBucket == bucket &&

	// Network Sent/Received Bytes (internode)
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
			"Total number of bytes sent to the other peer nodes by current MinIO server instance",
			nil, nil),
		prometheus.CounterValue,
		float64(connStats.internodeOutputBytes),
	)

	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(