Merge pull request #1936 from fcrisciani/netdb-nodeid

NetworkDB create NodeID for cluster nodes

libnetwork/agent.go

@@ -6,11 +6,9 @@ import (
 	"encoding/json"
 	"fmt"
 	"net"
-	"os"
 	"sort"
 	"sync"
 
-	"github.com/docker/docker/pkg/stringid"
 	"github.com/docker/go-events"
 	"github.com/docker/libnetwork/cluster"
 	"github.com/docker/libnetwork/datastore"
@@ -282,12 +280,8 @@ func (c *controller) agentInit(listenAddr, bindAddrOrInterface, advertiseAddr, d
 	}
 
 	keys, _ := c.getKeys(subsysGossip)
-	hostname, _ := os.Hostname()
-	nodeName := hostname + "-" + stringid.TruncateID(stringid.GenerateRandomID())
-	logrus.Info("Gossip cluster hostname ", nodeName)
 
 	netDBConf := networkdb.DefaultConfig()
-	netDBConf.NodeName = nodeName
 	netDBConf.BindAddr = listenAddr
 	netDBConf.AdvertiseAddr = advertiseAddr
 	netDBConf.Keys = keys

libnetwork/networkdb/broadcast.go

@@ -32,7 +32,7 @@ func (nDB *NetworkDB) sendNetworkEvent(nid string, event NetworkEvent_Type, ltim
 	nEvent := NetworkEvent{
 		Type:      event,
 		LTime:     ltime,
-		NodeName:  nDB.config.NodeName,
+		NodeName:  nDB.config.NodeID,
 		NetworkID: nid,
 	}
 
@@ -44,7 +44,7 @@ func (nDB *NetworkDB) sendNetworkEvent(nid string, event NetworkEvent_Type, ltim
 	nDB.networkBroadcasts.QueueBroadcast(&networkEventMessage{
 		msg:  raw,
 		id:   nid,
-		node: nDB.config.NodeName,
+		node: nDB.config.NodeID,
 	})
 	return nil
 }
@@ -72,7 +72,7 @@ func (nDB *NetworkDB) sendNodeEvent(event NodeEvent_Type) error {
 	nEvent := NodeEvent{
 		Type:     event,
 		LTime:    nDB.networkClock.Increment(),
-		NodeName: nDB.config.NodeName,
+		NodeName: nDB.config.NodeID,
 	}
 
 	raw, err := encodeMessage(MessageTypeNodeEvent, &nEvent)
@@ -129,7 +129,7 @@ func (nDB *NetworkDB) sendTableEvent(event TableEvent_Type, nid string, tname st
 	tEvent := TableEvent{
 		Type:      event,
 		LTime:     entry.ltime,
-		NodeName:  nDB.config.NodeName,
+		NodeName:  nDB.config.NodeID,
 		NetworkID: nid,
 		TableName: tname,
 		Key:       key,
@@ -145,7 +145,7 @@ func (nDB *NetworkDB) sendTableEvent(event TableEvent_Type, nid string, tname st
 
 	var broadcastQ *memberlist.TransmitLimitedQueue
 	nDB.RLock()
-	thisNodeNetworks, ok := nDB.networks[nDB.config.NodeName]
+	thisNodeNetworks, ok := nDB.networks[nDB.config.NodeID]
 	if ok {
 		// The network may have been removed
 		network, networkOk := thisNodeNetworks[nid]
@@ -168,7 +168,7 @@ func (nDB *NetworkDB) sendTableEvent(event TableEvent_Type, nid string, tname st
 		id:    nid,
 		tname: tname,
 		key:   key,
-		node:  nDB.config.NodeName,
+		node:  nDB.config.NodeID,
 	})
 	return nil
 }

libnetwork/networkdb/cluster.go

@@ -106,7 +106,7 @@ func (nDB *NetworkDB) clusterInit() error {
 	nDB.lastHealthTimestamp = nDB.lastStatsTimestamp
 
 	config := memberlist.DefaultLANConfig()
-	config.Name = nDB.config.NodeName
+	config.Name = nDB.config.NodeID
 	config.BindAddr = nDB.config.BindAddr
 	config.AdvertiseAddr = nDB.config.AdvertiseAddr
 	config.UDPBufferSize = nDB.config.PacketBufferSize
@@ -329,7 +329,7 @@ func (nDB *NetworkDB) reapTableEntries() {
 	var nodeNetworks []string
 	// This is best effort, if the list of network changes will be picked up in the next cycle
 	nDB.RLock()
-	for nid := range nDB.networks[nDB.config.NodeName] {
+	for nid := range nDB.networks[nDB.config.NodeID] {
 		nodeNetworks = append(nodeNetworks, nid)
 	}
 	nDB.RUnlock()
@@ -376,7 +376,7 @@ func (nDB *NetworkDB) reapTableEntries() {
 func (nDB *NetworkDB) gossip() {
 	networkNodes := make(map[string][]string)
 	nDB.RLock()
-	thisNodeNetworks := nDB.networks[nDB.config.NodeName]
+	thisNodeNetworks := nDB.networks[nDB.config.NodeID]
 	for nid := range thisNodeNetworks {
 		networkNodes[nid] = nDB.networkNodes[nid]
 
@@ -388,7 +388,7 @@ func (nDB *NetworkDB) gossip() {
 	if printHealth {
 		healthScore := nDB.memberlist.GetHealthScore()
 		if healthScore != 0 {
-			logrus.Warnf("NetworkDB stats - healthscore:%d (connectivity issues)", healthScore)
+			logrus.Warnf("NetworkDB stats %v(%v) - healthscore:%d (connectivity issues)", nDB.config.Hostname, nDB.config.NodeID, healthScore)
 		}
 		nDB.lastHealthTimestamp = time.Now()
 	}
@@ -419,7 +419,8 @@ func (nDB *NetworkDB) gossip() {
 		// Collect stats and print the queue info, note this code is here also to have a view of the queues empty
 		network.qMessagesSent += len(msgs)
 		if printStats {
-			logrus.Infof("NetworkDB stats - netID:%s leaving:%t netPeers:%d entries:%d Queue qLen:%d netMsg/s:%d",
+			logrus.Infof("NetworkDB stats %v(%v) - netID:%s leaving:%t netPeers:%d entries:%d Queue qLen:%d netMsg/s:%d",
+				nDB.config.Hostname, nDB.config.NodeID,
 				nid, network.leaving, broadcastQ.NumNodes(), network.entriesNumber, broadcastQ.NumQueued(),
 				network.qMessagesSent/int((nDB.config.StatsPrintPeriod/time.Second)))
 			network.qMessagesSent = 0
@@ -456,7 +457,7 @@ func (nDB *NetworkDB) gossip() {
 func (nDB *NetworkDB) bulkSyncTables() {
 	var networks []string
 	nDB.RLock()
-	for nid, network := range nDB.networks[nDB.config.NodeName] {
+	for nid, network := range nDB.networks[nDB.config.NodeID] {
 		if network.leaving {
 			continue
 		}
@@ -522,10 +523,10 @@ func (nDB *NetworkDB) bulkSync(nodes []string, all bool) ([]string, error) {
 	var err error
 	var networks []string
 	for _, node := range nodes {
-		if node == nDB.config.NodeName {
+		if node == nDB.config.NodeID {
 			continue
 		}
-		logrus.Debugf("%s: Initiating bulk sync with node %v", nDB.config.NodeName, node)
+		logrus.Debugf("%v(%v): Initiating bulk sync with node %v", nDB.config.Hostname, nDB.config.NodeID, node)
 		networks = nDB.findCommonNetworks(node)
 		err = nDB.bulkSyncNode(networks, node, true)
 		// if its periodic bulksync stop after the first successful sync
@@ -556,7 +557,8 @@ func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited b
 		unsolMsg = "unsolicited"
 	}
 
-	logrus.Debugf("%s: Initiating %s bulk sync for networks %v with node %s", nDB.config.NodeName, unsolMsg, networks, node)
+	logrus.Debugf("%v(%v): Initiating %s bulk sync for networks %v with node %s",
+		nDB.config.Hostname, nDB.config.NodeID, unsolMsg, networks, node)
 
 	nDB.RLock()
 	mnode := nDB.nodes[node]
@@ -608,7 +610,7 @@ func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited b
 	bsm := BulkSyncMessage{
 		LTime:       nDB.tableClock.Time(),
 		Unsolicited: unsolicited,
-		NodeName:    nDB.config.NodeName,
+		NodeName:    nDB.config.NodeID,
 		Networks:    networks,
 		Payload:     compound,
 	}
@@ -640,7 +642,7 @@ func (nDB *NetworkDB) bulkSyncNode(networks []string, node string, unsolicited b
 		case <-t.C:
 			logrus.Errorf("Bulk sync to node %s timed out", node)
 		case <-ch:
-			logrus.Debugf("%s: Bulk sync to node %s took %s", nDB.config.NodeName, node, time.Since(startTime))
+			logrus.Debugf("%v(%v): Bulk sync to node %s took %s", nDB.config.Hostname, nDB.config.NodeID, node, time.Since(startTime))
 		}
 		t.Stop()
 	}
@@ -677,7 +679,7 @@ OUTER:
 		idx := randomOffset(n)
 		node := nodes[idx]
 
-		if node == nDB.config.NodeName {
+		if node == nDB.config.NodeID {
 			continue
 		}
 

libnetwork/networkdb/delegate.go

@@ -2,7 +2,6 @@ package networkdb
 
 import (
 	"net"
-	"strings"
 	"time"
 
 	"github.com/gogo/protobuf/proto"
@@ -58,29 +57,6 @@ func (nDB *NetworkDB) checkAndGetNode(nEvent *NodeEvent) *node {
 	return nil
 }
 
-func (nDB *NetworkDB) purgeSameNode(n *node) {
-	nDB.Lock()
-	defer nDB.Unlock()
-
-	prefix := strings.Split(n.Name, "-")[0]
-	for _, nodes := range []map[string]*node{
-		nDB.failedNodes,
-		nDB.leftNodes,
-		nDB.nodes,
-	} {
-		var nodeNames []string
-		for name, node := range nodes {
-			if strings.HasPrefix(name, prefix) && n.Addr.Equal(node.Addr) {
-				nodeNames = append(nodeNames, name)
-			}
-		}
-
-		for _, name := range nodeNames {
-			delete(nodes, name)
-		}
-	}
-}
-
 func (nDB *NetworkDB) handleNodeEvent(nEvent *NodeEvent) bool {
 	// Update our local clock if the received messages has newer
 	// time.
@@ -108,7 +84,6 @@ func (nDB *NetworkDB) handleNodeEvent(nEvent *NodeEvent) bool {
 		return false
 	}
 
-	nDB.purgeSameNode(n)
 	n.ltime = nEvent.LTime
 
 	switch nEvent.Type {
@@ -140,7 +115,7 @@ func (nDB *NetworkDB) handleNetworkEvent(nEvent *NetworkEvent) bool {
 	nDB.Lock()
 	defer nDB.Unlock()
 
-	if nEvent.NodeName == nDB.config.NodeName {
+	if nEvent.NodeName == nDB.config.NodeID {
 		return false
 	}
 
@@ -203,7 +178,7 @@ func (nDB *NetworkDB) handleTableEvent(tEvent *TableEvent) bool {
 
 	// Ignore the table events for networks that are in the process of going away
 	nDB.RLock()
-	networks := nDB.networks[nDB.config.NodeName]
+	networks := nDB.networks[nDB.config.NodeID]
 	network, ok := networks[tEvent.NetworkID]
 	// Check if the owner of the event is still part of the network
 	nodes := nDB.networkNodes[tEvent.NetworkID]
@@ -292,7 +267,7 @@ func (nDB *NetworkDB) handleTableMessage(buf []byte, isBulkSync bool) {
 	}
 
 	// Ignore messages that this node generated.
-	if tEvent.NodeName == nDB.config.NodeName {
+	if tEvent.NodeName == nDB.config.NodeID {
 		return
 	}
 
@@ -305,7 +280,7 @@ func (nDB *NetworkDB) handleTableMessage(buf []byte, isBulkSync bool) {
 		}
 
 		nDB.RLock()
-		n, ok := nDB.networks[nDB.config.NodeName][tEvent.NetworkID]
+		n, ok := nDB.networks[nDB.config.NodeID][tEvent.NetworkID]
 		nDB.RUnlock()
 
 		// if the network is not there anymore, OR we are leaving the network OR the broadcast queue is not present
@@ -424,7 +399,7 @@ func (nDB *NetworkDB) handleMessage(buf []byte, isBulkSync bool) {
 	case MessageTypeCompound:
 		nDB.handleCompound(data, isBulkSync)
 	default:
-		logrus.Errorf("%s: unknown message type %d", nDB.config.NodeName, mType)
+		logrus.Errorf("%v(%v): unknown message type %d", nDB.config.Hostname, nDB.config.NodeID, mType)
 	}
 }
 
@@ -457,7 +432,7 @@ func (d *delegate) LocalState(join bool) []byte {
 
 	pp := NetworkPushPull{
 		LTime:    d.nDB.networkClock.Time(),
-		NodeName: d.nDB.config.NodeName,
+		NodeName: d.nDB.config.NodeID,
 	}
 
 	for name, nn := range d.nDB.networks {

libnetwork/networkdb/networkdb.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/armon/go-radix"
+	"github.com/docker/docker/pkg/stringid"
 	"github.com/docker/go-events"
 	"github.com/docker/libnetwork/types"
 	"github.com/hashicorp/memberlist"
@@ -151,8 +152,11 @@ type network struct {
 // Config represents the configuration of the networdb instance and
 // can be passed by the caller.
 type Config struct {
-	// NodeName is the cluster wide unique name for this node.
-	NodeName string
+	// NodeID is the node unique identifier of the node when is part of the cluster
+	NodeID string
+
+	// Hostname is the node hostname.
+	Hostname string
 
 	// BindAddr is the IP on which networkdb listens. It can be
 	// 0.0.0.0 to listen on all addresses on the host.
@@ -210,7 +214,8 @@ type entry struct {
 func DefaultConfig() *Config {
 	hostname, _ := os.Hostname()
 	return &Config{
-		NodeName:          hostname,
+		NodeID:            stringid.TruncateID(stringid.GenerateRandomID()),
+		Hostname:          hostname,
 		BindAddr:          "0.0.0.0",
 		PacketBufferSize:  1400,
 		StatsPrintPeriod:  5 * time.Minute,
@@ -236,6 +241,7 @@ func New(c *Config) (*NetworkDB, error) {
 	nDB.indexes[byTable] = radix.New()
 	nDB.indexes[byNetwork] = radix.New()
 
+	logrus.Debugf("New memberlist node - Node:%v will use memberlist nodeID:%v", c.Hostname, c.NodeID)
 	if err := nDB.clusterInit(); err != nil {
 		return nil, err
 	}
@@ -259,7 +265,7 @@ func (nDB *NetworkDB) Join(members []string) error {
 // stopping timers, canceling goroutines etc.
 func (nDB *NetworkDB) Close() {
 	if err := nDB.clusterLeave(); err != nil {
-		logrus.Errorf("Could not close DB %s: %v", nDB.config.NodeName, err)
+		logrus.Errorf("%v(%v) Could not close DB: %v", nDB.config.Hostname, nDB.config.NodeID, err)
 	}
 }
 
@@ -334,7 +340,7 @@ func (nDB *NetworkDB) CreateEntry(tname, nid, key string, value []byte) error {
 
 	entry := &entry{
 		ltime: nDB.tableClock.Increment(),
-		node:  nDB.config.NodeName,
+		node:  nDB.config.NodeID,
 		value: value,
 	}
 
@@ -360,7 +366,7 @@ func (nDB *NetworkDB) UpdateEntry(tname, nid, key string, value []byte) error {
 
 	entry := &entry{
 		ltime: nDB.tableClock.Increment(),
-		node:  nDB.config.NodeName,
+		node:  nDB.config.NodeID,
 		value: value,
 	}
 
@@ -402,7 +408,7 @@ func (nDB *NetworkDB) DeleteEntry(tname, nid, key string) error {
 
 	entry := &entry{
 		ltime:    nDB.tableClock.Increment(),
-		node:     nDB.config.NodeName,
+		node:     nDB.config.NodeID,
 		value:    value,
 		deleting: true,
 		reapTime: reapEntryInterval,
@@ -451,7 +457,7 @@ func (nDB *NetworkDB) deleteNetworkEntriesForNode(deletedNode string) {
 //		  entries owned by remote nodes, we will accept them and we notify the application
 func (nDB *NetworkDB) deleteNodeNetworkEntries(nid, node string) {
 	// Indicates if the delete is triggered for the local node
-	isNodeLocal := node == nDB.config.NodeName
+	isNodeLocal := node == nDB.config.NodeID
 
 	nDB.indexes[byNetwork].WalkPrefix(fmt.Sprintf("/%s", nid),
 		func(path string, v interface{}) bool {
@@ -552,10 +558,10 @@ func (nDB *NetworkDB) JoinNetwork(nid string) error {
 	ltime := nDB.networkClock.Increment()
 
 	nDB.Lock()
-	nodeNetworks, ok := nDB.networks[nDB.config.NodeName]
+	nodeNetworks, ok := nDB.networks[nDB.config.NodeID]
 	if !ok {
 		nodeNetworks = make(map[string]*network)
-		nDB.networks[nDB.config.NodeName] = nodeNetworks
+		nDB.networks[nDB.config.NodeID] = nodeNetworks
 	}
 	n, ok := nodeNetworks[nid]
 	var entries int
@@ -571,8 +577,7 @@ func (nDB *NetworkDB) JoinNetwork(nid string) error {
 		},
 		RetransmitMult: 4,
 	}
-
-	nDB.addNetworkNode(nid, nDB.config.NodeName)
+	nDB.addNetworkNode(nid, nDB.config.NodeID)
 	networkNodes := nDB.networkNodes[nid]
 	nDB.Unlock()
 
@@ -580,7 +585,7 @@ func (nDB *NetworkDB) JoinNetwork(nid string) error {
 		return fmt.Errorf("failed to send leave network event for %s: %v", nid, err)
 	}
 
-	logrus.Debugf("%s: joined network %s", nDB.config.NodeName, nid)
+	logrus.Debugf("%v(%v): joined network %s", nDB.config.Hostname, nDB.config.NodeID, nid)
 	if _, err := nDB.bulkSync(networkNodes, true); err != nil {
 		logrus.Errorf("Error bulk syncing while joining network %s: %v", nid, err)
 	}
@@ -604,12 +609,12 @@ func (nDB *NetworkDB) LeaveNetwork(nid string) error {
 	defer nDB.Unlock()
 
 	// Remove myself from the list of the nodes participating to the network
-	nDB.deleteNetworkNode(nid, nDB.config.NodeName)
+	nDB.deleteNetworkNode(nid, nDB.config.NodeID)
 
 	// Update all the local entries marking them for deletion and delete all the remote entries
-	nDB.deleteNodeNetworkEntries(nid, nDB.config.NodeName)
+	nDB.deleteNodeNetworkEntries(nid, nDB.config.NodeID)
 
-	nodeNetworks, ok := nDB.networks[nDB.config.NodeName]
+	nodeNetworks, ok := nDB.networks[nDB.config.NodeID]
 	if !ok {
 		return fmt.Errorf("could not find self node for network %s while trying to leave", nid)
 	}
@@ -619,7 +624,7 @@ func (nDB *NetworkDB) LeaveNetwork(nid string) error {
 		return fmt.Errorf("could not find network %s while trying to leave", nid)
 	}
 
-	logrus.Debugf("%s: leaving network %s", nDB.config.NodeName, nid)
+	logrus.Debugf("%v(%v): leaving network %s", nDB.config.Hostname, nDB.config.NodeID, nid)
 	n.ltime = ltime
 	n.reapTime = reapNetworkInterval
 	n.leaving = true
@@ -665,7 +670,7 @@ func (nDB *NetworkDB) findCommonNetworks(nodeName string) []string {
 	defer nDB.RUnlock()
 
 	var networks []string
-	for nid := range nDB.networks[nDB.config.NodeName] {
+	for nid := range nDB.networks[nDB.config.NodeID] {
 		if n, ok := nDB.networks[nodeName][nid]; ok {
 			if !n.leaving {
 				networks = append(networks, nid)
@@ -681,7 +686,7 @@ func (nDB *NetworkDB) updateLocalNetworkTime() {
 	defer nDB.Unlock()
 
 	ltime := nDB.networkClock.Increment()
-	for _, n := range nDB.networks[nDB.config.NodeName] {
+	for _, n := range nDB.networks[nDB.config.NodeID] {
 		n.ltime = ltime
 	}
 }
@@ -693,7 +698,7 @@ func (nDB *NetworkDB) createOrUpdateEntry(nid, tname, key string, entry interfac
 	_, okNetwork := nDB.indexes[byNetwork].Insert(fmt.Sprintf("/%s/%s/%s", nid, tname, key), entry)
 	if !okNetwork {
 		// Add only if it is an insert not an update
-		n, ok := nDB.networks[nDB.config.NodeName][nid]
+		n, ok := nDB.networks[nDB.config.NodeID][nid]
 		if ok {
 			n.entriesNumber++
 		}
@@ -708,7 +713,7 @@ func (nDB *NetworkDB) deleteEntry(nid, tname, key string) (bool, bool) {
 	_, okNetwork := nDB.indexes[byNetwork].Delete(fmt.Sprintf("/%s/%s/%s", nid, tname, key))
 	if okNetwork {
 		// Remove only if the delete is successful
-		n, ok := nDB.networks[nDB.config.NodeName][nid]
+		n, ok := nDB.networks[nDB.config.NodeID][nid]
 		if ok {
 			n.entriesNumber--
 		}

libnetwork/networkdb/networkdb_test.go

@@ -31,7 +31,7 @@ func createNetworkDBInstances(t *testing.T, num int, namePrefix string) []*Netwo
 	var dbs []*NetworkDB
 	for i := 0; i < num; i++ {
 		conf := DefaultConfig()
-		conf.NodeName = fmt.Sprintf("%s%d", namePrefix, i+1)
+		conf.Hostname = fmt.Sprintf("%s%d", namePrefix, i+1)
 		conf.BindPort = int(atomic.AddInt32(&dbPort, 1))
 		db, err := New(conf)
 		require.NoError(t, err)
@@ -69,7 +69,7 @@ func (db *NetworkDB) verifyNodeExistence(t *testing.T, node string, present bool
 		time.Sleep(50 * time.Millisecond)
 	}
 
-	assert.Fail(t, fmt.Sprintf("%s: Node existence verification for node %s failed", db.config.NodeName, node))
+	assert.Fail(t, fmt.Sprintf("%v(%v): Node existence verification for node %s failed", db.config.Hostname, db.config.NodeID, node))
 }
 
 func (db *NetworkDB) verifyNetworkExistence(t *testing.T, node string, id string, present bool) {
@@ -117,7 +117,7 @@ func (db *NetworkDB) verifyEntryExistence(t *testing.T, tname, nid, key, value s
 		time.Sleep(50 * time.Millisecond)
 	}
 
-	assert.Fail(t, fmt.Sprintf("Entry existence verification test failed for %s", db.config.NodeName))
+	assert.Fail(t, fmt.Sprintf("Entry existence verification test failed for %v(%v)", db.config.Hostname, db.config.NodeID))
 }
 
 func testWatch(t *testing.T, ch chan events.Event, ev interface{}, tname, nid, key, value string) {
@@ -157,12 +157,12 @@ func TestNetworkDBJoinLeaveNetwork(t *testing.T) {
 	err := dbs[0].JoinNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[1].verifyNetworkExistence(t, "node1", "network1", true)
+	dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, "network1", true)
 
 	err = dbs[0].LeaveNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[1].verifyNetworkExistence(t, "node1", "network1", false)
+	dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, "network1", false)
 	closeNetworkDBInstances(dbs)
 }
 
@@ -181,11 +181,11 @@ func TestNetworkDBJoinLeaveNetworks(t *testing.T) {
 	}
 
 	for i := 1; i <= n; i++ {
-		dbs[1].verifyNetworkExistence(t, "node1", fmt.Sprintf("network0%d", i), true)
+		dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, fmt.Sprintf("network0%d", i), true)
 	}
 
 	for i := 1; i <= n; i++ {
-		dbs[0].verifyNetworkExistence(t, "node2", fmt.Sprintf("network1%d", i), true)
+		dbs[0].verifyNetworkExistence(t, dbs[1].config.NodeID, fmt.Sprintf("network1%d", i), true)
 	}
 
 	for i := 1; i <= n; i++ {
@@ -199,11 +199,11 @@ func TestNetworkDBJoinLeaveNetworks(t *testing.T) {
 	}
 
 	for i := 1; i <= n; i++ {
-		dbs[1].verifyNetworkExistence(t, "node1", fmt.Sprintf("network0%d", i), false)
+		dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, fmt.Sprintf("network0%d", i), false)
 	}
 
 	for i := 1; i <= n; i++ {
-		dbs[0].verifyNetworkExistence(t, "node2", fmt.Sprintf("network1%d", i), false)
+		dbs[0].verifyNetworkExistence(t, dbs[1].config.NodeID, fmt.Sprintf("network1%d", i), false)
 	}
 
 	closeNetworkDBInstances(dbs)
@@ -215,7 +215,7 @@ func TestNetworkDBCRUDTableEntry(t *testing.T) {
 	err := dbs[0].JoinNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[1].verifyNetworkExistence(t, "node1", "network1", true)
+	dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, "network1", true)
 
 	err = dbs[1].JoinNetwork("network1")
 	assert.NoError(t, err)
@@ -245,7 +245,7 @@ func TestNetworkDBCRUDTableEntries(t *testing.T) {
 	err := dbs[0].JoinNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[1].verifyNetworkExistence(t, "node1", "network1", true)
+	dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, "network1", true)
 
 	err = dbs[1].JoinNetwork("network1")
 	assert.NoError(t, err)
@@ -361,7 +361,7 @@ func TestNetworkDBBulkSync(t *testing.T) {
 	err := dbs[0].JoinNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[1].verifyNetworkExistence(t, "node1", "network1", true)
+	dbs[1].verifyNetworkExistence(t, dbs[0].config.NodeID, "network1", true)
 
 	n := 1000
 	for i := 1; i <= n; i++ {
@@ -374,7 +374,7 @@ func TestNetworkDBBulkSync(t *testing.T) {
 	err = dbs[1].JoinNetwork("network1")
 	assert.NoError(t, err)
 
-	dbs[0].verifyNetworkExistence(t, "node2", "network1", true)
+	dbs[0].verifyNetworkExistence(t, dbs[1].config.NodeID, "network1", true)
 
 	for i := 1; i <= n; i++ {
 		dbs[1].verifyEntryExistence(t, "test_table", "network1",
@@ -397,7 +397,7 @@ func TestNetworkDBCRUDMediumCluster(t *testing.T) {
 				continue
 			}
 
-			dbs[i].verifyNodeExistence(t, fmt.Sprintf("node%d", j+1), true)
+			dbs[i].verifyNodeExistence(t, dbs[j].config.NodeID, true)
 		}
 	}
 
@@ -408,7 +408,7 @@ func TestNetworkDBCRUDMediumCluster(t *testing.T) {
 
 	for i := 0; i < n; i++ {
 		for j := 0; j < n; j++ {
-			dbs[i].verifyNetworkExistence(t, fmt.Sprintf("node%d", j+1), "network1", true)
+			dbs[i].verifyNetworkExistence(t, dbs[j].config.NodeID, "network1", true)
 		}
 	}
 
@@ -473,7 +473,7 @@ func TestNetworkDBNodeJoinLeaveIteration(t *testing.T) {
 	if len(dbs[0].networkNodes["network1"]) != 2 {
 		t.Fatalf("The networkNodes list has to have be 2 instead of %d - %v", len(dbs[0].networkNodes["network1"]), dbs[0].networkNodes["network1"])
 	}
-	if n, ok := dbs[0].networks[dbs[0].config.NodeName]["network1"]; !ok || n.leaving {
+	if n, ok := dbs[0].networks[dbs[0].config.NodeID]["network1"]; !ok || n.leaving {
 		t.Fatalf("The network should not be marked as leaving:%t", n.leaving)
 	}
 
@@ -487,7 +487,7 @@ func TestNetworkDBNodeJoinLeaveIteration(t *testing.T) {
 	if len(dbs[1].networkNodes["network1"]) != 2 {
 		t.Fatalf("The networkNodes list has to have be 2 instead of %d - %v", len(dbs[1].networkNodes["network1"]), dbs[1].networkNodes["network1"])
 	}
-	if n, ok := dbs[1].networks[dbs[1].config.NodeName]["network1"]; !ok || n.leaving {
+	if n, ok := dbs[1].networks[dbs[1].config.NodeID]["network1"]; !ok || n.leaving {
 		t.Fatalf("The network should not be marked as leaving:%t", n.leaving)
 	}
 

libnetwork/test/networkDb/dbserver/ndbServer.go

@@ -52,7 +52,7 @@ func Server(args []string) {
 	server = diagnose.Server{}
 	server.Init()
 	conf := networkdb.DefaultConfig()
-	conf.NodeName = localNodeName
+	conf.Hostname = localNodeName
 	conf.AdvertiseAddr = ipAddr
 	conf.BindAddr = ipAddr
 	nDB, err = networkdb.New(conf)