Vendor swarmkit ae29cf2

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>

vendor.conf

@@ -105,7 +105,7 @@ github.com/docker/containerd 8ef7df579710405c4bb6e0812495671002ce08e0
 github.com/tonistiigi/fifo 1405643975692217d6720f8b54aeee1bf2cd5cf4
 
 # cluster
-github.com/docker/swarmkit f420c4b9e1535170fc229db97ee8ac32374020b1
+github.com/docker/swarmkit ae29cf24355ef2106b63884d2f9b0a6406e5a144
 github.com/gogo/protobuf 8d70fb3182befc465c4a1eac8ad4d38ff49778e2
 github.com/cloudflare/cfssl 7fb22c8cba7ecaf98e4082d22d65800cf45e042a
 github.com/google/certificate-transparency d90e65c3a07988180c5b1ece71791c0b6506826e

vendor/github.com/docker/swarmkit/api/ca.pb.go

@@ -2074,7 +2074,7 @@ func init() { proto.RegisterFile("ca.proto", fileDescriptorCa) }
 
 var fileDescriptorCa = []byte{
 	// 610 bytes of a gzipped FileDescriptorProto
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vendor/github.com/docker/swarmkit/api/control.pb.go

@@ -15993,7 +15993,7 @@ func init() { proto.RegisterFile("control.proto", fileDescriptorControl) }
 
 var fileDescriptorControl = []byte{
 	// 2096 bytes of a gzipped FileDescriptorProto
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vendor/github.com/docker/swarmkit/api/dispatcher.pb.go

@@ -3781,7 +3781,7 @@ func init() { proto.RegisterFile("dispatcher.proto", fileDescriptorDispatcher) }
 
 var fileDescriptorDispatcher = []byte{
 	// 983 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x9c, 0x55, 0x4f, 0x6f, 0x1b, 0x45,
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vendor/github.com/docker/swarmkit/api/health.pb.go

@@ -700,7 +700,7 @@ func init() { proto.RegisterFile("health.proto", fileDescriptorHealth) }
 
 var fileDescriptorHealth = []byte{
 	// 287 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0xc9, 0x48, 0x4d, 0xcc,
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vendor/github.com/docker/swarmkit/api/logbroker.pb.go

@@ -3366,7 +3366,7 @@ func init() { proto.RegisterFile("logbroker.proto", fileDescriptorLogbroker) }
 
 var fileDescriptorLogbroker = []byte{
 	// 940 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xa4, 0x95, 0xcf, 0x6f, 0x1b, 0x45,
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vendor/github.com/docker/swarmkit/api/objects.pb.go

@@ -7470,7 +7470,7 @@ func init() { proto.RegisterFile("objects.proto", fileDescriptorObjects) }
 
 var fileDescriptorObjects = []byte{
 	// 1405 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xcc, 0x57, 0xc1, 0x6f, 0x1b, 0x45,
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vendor/github.com/docker/swarmkit/api/raft.pb.go

@@ -3587,7 +3587,7 @@ func init() { proto.RegisterFile("raft.proto", fileDescriptorRaft) }
 
 var fileDescriptorRaft = []byte{
 	// 949 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x96, 0x4f, 0x6f, 0x1b, 0x45,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x96, 0x4f, 0x6f, 0x1b, 0x45,
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vendor/github.com/docker/swarmkit/api/resource.pb.go

@@ -1065,7 +1065,7 @@ func init() { proto.RegisterFile("resource.proto", fileDescriptorResource) }
 
 var fileDescriptorResource = []byte{
 	// 368 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0x2b, 0x4a, 0x2d, 0xce,
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vendor/github.com/docker/swarmkit/api/snapshot.pb.go

@@ -1321,7 +1321,7 @@ func init() { proto.RegisterFile("snapshot.proto", fileDescriptorSnapshot) }
 
 var fileDescriptorSnapshot = []byte{
 	// 466 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x7c, 0x93, 0x3f, 0x6f, 0x13, 0x4d,
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vendor/github.com/docker/swarmkit/api/specs.pb.go

@@ -5884,7 +5884,7 @@ func init() { proto.RegisterFile("specs.proto", fileDescriptorSpecs) }
 
 var fileDescriptorSpecs = []byte{
 	// 1824 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x57, 0x4f, 0x73, 0x1b, 0x49,
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vendor/github.com/docker/swarmkit/api/types.pb.go

@@ -16084,7 +16084,7 @@ func init() { proto.RegisterFile("types.proto", fileDescriptorTypes) }
 
 var fileDescriptorTypes = []byte{
 	// 4658 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xac, 0x5a, 0x4d, 0x6c, 0x23, 0x47,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x5a, 0x4d, 0x6c, 0x23, 0x47,
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vendor/github.com/docker/swarmkit/api/watch.pb.go

@@ -4523,7 +4523,7 @@ func init() { proto.RegisterFile("watch.proto", fileDescriptorWatch) }
 
 var fileDescriptorWatch = []byte{
 	// 1155 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x96, 0xbb, 0x73, 0x1b, 0xd5,
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vendor/github.com/docker/swarmkit/manager/controlapi/service.go

@@ -3,7 +3,6 @@ package controlapi
 import (
 	"errors"
 	"reflect"
-	"strconv"
 	"strings"
 	"time"
 
@@ -433,10 +432,9 @@ func (s *Server) validateNetworks(networks []*api.NetworkAttachmentConfig) error
 		if network == nil {
 			continue
 		}
-		if network.Spec.Internal {
+		if allocator.IsIngressNetwork(network) {
 			return grpc.Errorf(codes.InvalidArgument,
-				"Service cannot be explicitly attached to %q network which is a swarm internal network",
-				network.Spec.Annotations.Name)
+				"Service cannot be explicitly attached to the ingress network %q", network.Spec.Annotations.Name)
 		}
 	}
 	return nil
@@ -490,18 +488,32 @@ func (s *Server) checkPortConflicts(spec *api.ServiceSpec, serviceID string) err
 		return nil
 	}
 
-	pcToString := func(pc *api.PortConfig) string {
-		port := strconv.FormatUint(uint64(pc.PublishedPort), 10)
-		return port + "/" + pc.Protocol.String()
+	type portSpec struct {
+		protocol      api.PortConfig_Protocol
+		publishedPort uint32
 	}
 
-	reqPorts := make(map[string]bool)
-	for _, pc := range spec.Endpoint.Ports {
-		if pc.PublishedPort > 0 {
-			reqPorts[pcToString(pc)] = true
+	pcToStruct := func(pc *api.PortConfig) portSpec {
+		return portSpec{
+			protocol:      pc.Protocol,
+			publishedPort: pc.PublishedPort,
 		}
 	}
-	if len(reqPorts) == 0 {
+
+	ingressPorts := make(map[portSpec]struct{})
+	hostModePorts := make(map[portSpec]struct{})
+	for _, pc := range spec.Endpoint.Ports {
+		if pc.PublishedPort == 0 {
+			continue
+		}
+		switch pc.PublishMode {
+		case api.PublishModeIngress:
+			ingressPorts[pcToStruct(pc)] = struct{}{}
+		case api.PublishModeHost:
+			hostModePorts[pcToStruct(pc)] = struct{}{}
+		}
+	}
+	if len(ingressPorts) == 0 && len(hostModePorts) == 0 {
 		return nil
 	}
 
@@ -517,6 +529,31 @@ func (s *Server) checkPortConflicts(spec *api.ServiceSpec, serviceID string) err
 		return err
 	}
 
+	isPortInUse := func(pc *api.PortConfig, service *api.Service) error {
+		if pc.PublishedPort == 0 {
+			return nil
+		}
+
+		switch pc.PublishMode {
+		case api.PublishModeHost:
+			if _, ok := ingressPorts[pcToStruct(pc)]; ok {
+				return grpc.Errorf(codes.InvalidArgument, "port '%d' is already in use by service '%s' (%s) as a host-published port", pc.PublishedPort, service.Spec.Annotations.Name, service.ID)
+			}
+
+			// Multiple services with same port in host publish mode can
+			// coexist - this is handled by the scheduler.
+			return nil
+		case api.PublishModeIngress:
+			_, ingressConflict := ingressPorts[pcToStruct(pc)]
+			_, hostModeConflict := hostModePorts[pcToStruct(pc)]
+			if ingressConflict || hostModeConflict {
+				return grpc.Errorf(codes.InvalidArgument, "port '%d' is already in use by service '%s' (%s) as an ingress port", pc.PublishedPort, service.Spec.Annotations.Name, service.ID)
+			}
+		}
+
+		return nil
+	}
+
 	for _, service := range services {
 		// If service ID is the same (and not "") then this is an update
 		if serviceID != "" && serviceID == service.ID {
@@ -524,15 +561,15 @@ func (s *Server) checkPortConflicts(spec *api.ServiceSpec, serviceID string) err
 		}
 		if service.Spec.Endpoint != nil {
 			for _, pc := range service.Spec.Endpoint.Ports {
-				if reqPorts[pcToString(pc)] {
-					return grpc.Errorf(codes.InvalidArgument, "port '%d' is already in use by service '%s' (%s)", pc.PublishedPort, service.Spec.Annotations.Name, service.ID)
+				if err := isPortInUse(pc, service); err != nil {
+					return err
 				}
 			}
 		}
 		if service.Endpoint != nil {
 			for _, pc := range service.Endpoint.Ports {
-				if reqPorts[pcToString(pc)] {
-					return grpc.Errorf(codes.InvalidArgument, "port '%d' is already in use by service '%s' (%s)", pc.PublishedPort, service.Spec.Annotations.Name, service.ID)
+				if err := isPortInUse(pc, service); err != nil {
+					return err
 				}
 			}
 		}

vendor/github.com/docker/swarmkit/manager/dispatcher/dispatcher.go

@@ -529,6 +529,8 @@ func (d *Dispatcher) UpdateTaskStatus(ctx context.Context, r *api.UpdateTaskStat
 		return nil, err
 	}
 
+	validTaskUpdates := make([]*api.UpdateTaskStatusRequest_TaskStatusUpdate, 0, len(r.Updates))
+
 	// Validate task updates
 	for _, u := range r.Updates {
 		if u.Status == nil {
@@ -541,7 +543,8 @@ func (d *Dispatcher) UpdateTaskStatus(ctx context.Context, r *api.UpdateTaskStat
 			t = store.GetTask(tx, u.TaskID)
 		})
 		if t == nil {
-			log.WithField("task.id", u.TaskID).Warn("cannot find target task in store")
+			// Task may have been deleted
+			log.WithField("task.id", u.TaskID).Debug("cannot find target task in store")
 			continue
 		}
 
@@ -550,14 +553,13 @@ func (d *Dispatcher) UpdateTaskStatus(ctx context.Context, r *api.UpdateTaskStat
 			log.WithField("task.id", u.TaskID).Error(err)
 			return nil, err
 		}
+
+		validTaskUpdates = append(validTaskUpdates, u)
 	}
 
 	d.taskUpdatesLock.Lock()
 	// Enqueue task updates
-	for _, u := range r.Updates {
-		if u.Status == nil {
-			continue
-		}
+	for _, u := range validTaskUpdates {
 		d.taskUpdates[u.TaskID] = u.Status
 	}
 
@@ -606,7 +608,8 @@ func (d *Dispatcher) processUpdates(ctx context.Context) {
 				logger := log.WithField("task.id", taskID)
 				task := store.GetTask(tx, taskID)
 				if task == nil {
-					logger.Errorf("task unavailable")
+					// Task may have been deleted
+					logger.Debug("cannot find target task in store")
 					return nil
 				}
 

vendor/github.com/docker/swarmkit/manager/manager.go

@@ -28,6 +28,7 @@ import (
 	"github.com/docker/swarmkit/manager/health"
 	"github.com/docker/swarmkit/manager/keymanager"
 	"github.com/docker/swarmkit/manager/logbroker"
+	"github.com/docker/swarmkit/manager/metrics"
 	"github.com/docker/swarmkit/manager/orchestrator/constraintenforcer"
 	"github.com/docker/swarmkit/manager/orchestrator/global"
 	"github.com/docker/swarmkit/manager/orchestrator/replicated"
@@ -123,6 +124,7 @@ type Config struct {
 type Manager struct {
 	config Config
 
+	collector              *metrics.Collector
 	caserver               *ca.Server
 	dispatcher             *dispatcher.Dispatcher
 	logbroker              *logbroker.LogBroker
@@ -214,6 +216,7 @@ func New(config *Config) (*Manager, error) {
 
 	m := &Manager{
 		config:          *config,
+		collector:       metrics.NewCollector(raftNode.MemoryStore()),
 		caserver:        ca.NewServer(raftNode.MemoryStore(), config.SecurityConfig, config.RootCAPaths),
 		dispatcher:      dispatcher.New(raftNode, dispatcher.DefaultConfig()),
 		logbroker:       logbroker.New(raftNode.MemoryStore()),
@@ -503,6 +506,13 @@ func (m *Manager) Run(parent context.Context) error {
 
 	localHealthServer.SetServingStatus("ControlAPI", api.HealthCheckResponse_SERVING)
 
+	// Start metrics collection.
+	go func(collector *metrics.Collector) {
+		if err := collector.Run(ctx); err != nil {
+			log.G(ctx).WithError(err).Error("collector failed with an error")
+		}
+	}(m.collector)
+
 	close(m.started)
 
 	go func() {
@@ -579,6 +589,7 @@ func (m *Manager) Stop(ctx context.Context, clearData bool) {
 
 	m.raftNode.Cancel()
 
+	m.collector.Stop()
 	m.dispatcher.Stop()
 	m.logbroker.Stop()
 	m.caserver.Stop()

vendor/github.com/docker/swarmkit/manager/metrics/collector.go

@@ -0,0 +1,104 @@
+package metrics
+
+import (
+	"context"
+
+	"strings"
+
+	metrics "github.com/docker/go-metrics"
+	"github.com/docker/swarmkit/api"
+	"github.com/docker/swarmkit/manager/state/store"
+)
+
+var (
+	ns          = metrics.NewNamespace("swarm", "manager", nil)
+	nodesMetric metrics.LabeledGauge
+)
+
+func init() {
+	nodesMetric = ns.NewLabeledGauge("nodes", "The number of nodes", "", "state")
+	for _, state := range api.NodeStatus_State_name {
+		nodesMetric.WithValues(strings.ToLower(state)).Set(0)
+	}
+	metrics.Register(ns)
+}
+
+// Collector collects swarmkit metrics
+type Collector struct {
+	store *store.MemoryStore
+
+	// stopChan signals to the state machine to stop running.
+	stopChan chan struct{}
+	// doneChan is closed when the state machine terminates.
+	doneChan chan struct{}
+}
+
+// NewCollector creates a new metrics collector
+func NewCollector(store *store.MemoryStore) *Collector {
+	return &Collector{
+		store:    store,
+		stopChan: make(chan struct{}),
+		doneChan: make(chan struct{}),
+	}
+}
+
+func (c *Collector) updateNodeState(prevNode, newNode *api.Node) {
+	// Skip updates if nothing changed.
+	if prevNode != nil && newNode != nil && prevNode.Status.State == newNode.Status.State {
+		return
+	}
+
+	if prevNode != nil {
+		nodesMetric.WithValues(strings.ToLower(prevNode.Status.State.String())).Dec(1)
+	}
+	if newNode != nil {
+		nodesMetric.WithValues(strings.ToLower(newNode.Status.State.String())).Inc(1)
+	}
+}
+
+// Run contains the collector event loop
+func (c *Collector) Run(ctx context.Context) error {
+	defer close(c.doneChan)
+
+	watcher, cancel, err := store.ViewAndWatch(c.store, func(readTx store.ReadTx) error {
+		nodes, err := store.FindNodes(readTx, store.All)
+		if err != nil {
+			return err
+		}
+		for _, node := range nodes {
+			c.updateNodeState(nil, node)
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+	defer cancel()
+
+	for {
+		select {
+		case event := <-watcher:
+			switch v := event.(type) {
+			case api.EventCreateNode:
+				c.updateNodeState(nil, v.Node)
+			case api.EventUpdateNode:
+				c.updateNodeState(v.OldNode, v.Node)
+			case api.EventDeleteNode:
+				c.updateNodeState(v.Node, nil)
+			}
+		case <-c.stopChan:
+			return nil
+		}
+	}
+}
+
+// Stop stops the collector.
+func (c *Collector) Stop() {
+	close(c.stopChan)
+	<-c.doneChan
+
+	// Clean the metrics on exit.
+	for _, state := range api.NodeStatus_State_name {
+		nodesMetric.WithValues(strings.ToLower(state)).Set(0)
+	}
+}

vendor/github.com/docker/swarmkit/manager/scheduler/filter.go

@@ -260,3 +260,44 @@ func (f *PlatformFilter) Explain(nodes int) string {
 	}
 	return fmt.Sprintf("unsupported platform on %d nodes", nodes)
 }
+
+// HostPortFilter checks that the node has a specific port available.
+type HostPortFilter struct {
+	t *api.Task
+}
+
+// SetTask returns true when the filter is enabled for a given task.
+func (f *HostPortFilter) SetTask(t *api.Task) bool {
+	if t.Endpoint != nil {
+		for _, port := range t.Endpoint.Ports {
+			if port.PublishMode == api.PublishModeHost && port.PublishedPort != 0 {
+				f.t = t
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// Check returns true if the task can be scheduled into the given node.
+func (f *HostPortFilter) Check(n *NodeInfo) bool {
+	for _, port := range f.t.Endpoint.Ports {
+		if port.PublishMode == api.PublishModeHost && port.PublishedPort != 0 {
+			portSpec := hostPortSpec{protocol: port.Protocol, publishedPort: port.PublishedPort}
+			if _, ok := n.usedHostPorts[portSpec]; ok {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
+// Explain returns an explanation of a failure.
+func (f *HostPortFilter) Explain(nodes int) string {
+	if nodes == 1 {
+		return "host-mode port already in use on 1 node"
+	}
+	return fmt.Sprintf("host-mode port already in use on %d nodes", nodes)
+}

vendor/github.com/docker/swarmkit/manager/scheduler/nodeinfo.go

@@ -8,6 +8,12 @@ import (
 	"golang.org/x/net/context"
 )
 
+// hostPortSpec specifies a used host port.
+type hostPortSpec struct {
+	protocol      api.PortConfig_Protocol
+	publishedPort uint32
+}
+
 // NodeInfo contains a node and some additional metadata.
 type NodeInfo struct {
 	*api.Node
@@ -15,6 +21,7 @@ type NodeInfo struct {
 	ActiveTasksCount          int
 	ActiveTasksCountByService map[string]int
 	AvailableResources        api.Resources
+	usedHostPorts             map[hostPortSpec]struct{}
 
 	// recentFailures is a map from service ID to the timestamps of the
 	// most recent failures the node has experienced from replicas of that
@@ -30,6 +37,7 @@ func newNodeInfo(n *api.Node, tasks map[string]*api.Task, availableResources api
 		Tasks: make(map[string]*api.Task),
 		ActiveTasksCountByService: make(map[string]int),
 		AvailableResources:        availableResources,
+		usedHostPorts:             make(map[hostPortSpec]struct{}),
 		recentFailures:            make(map[string][]time.Time),
 	}
 
@@ -57,6 +65,15 @@ func (nodeInfo *NodeInfo) removeTask(t *api.Task) bool {
 	nodeInfo.AvailableResources.MemoryBytes += reservations.MemoryBytes
 	nodeInfo.AvailableResources.NanoCPUs += reservations.NanoCPUs
 
+	if t.Endpoint != nil {
+		for _, port := range t.Endpoint.Ports {
+			if port.PublishMode == api.PublishModeHost && port.PublishedPort != 0 {
+				portSpec := hostPortSpec{protocol: port.Protocol, publishedPort: port.PublishedPort}
+				delete(nodeInfo.usedHostPorts, portSpec)
+			}
+		}
+	}
+
 	return true
 }
 
@@ -84,6 +101,15 @@ func (nodeInfo *NodeInfo) addTask(t *api.Task) bool {
 	nodeInfo.AvailableResources.MemoryBytes -= reservations.MemoryBytes
 	nodeInfo.AvailableResources.NanoCPUs -= reservations.NanoCPUs
 
+	if t.Endpoint != nil {
+		for _, port := range t.Endpoint.Ports {
+			if port.PublishMode == api.PublishModeHost && port.PublishedPort != 0 {
+				portSpec := hostPortSpec{protocol: port.Protocol, publishedPort: port.PublishedPort}
+				nodeInfo.usedHostPorts[portSpec] = struct{}{}
+			}
+		}
+	}
+
 	if t.DesiredState <= api.TaskStateRunning {
 		nodeInfo.ActiveTasksCount++
 		nodeInfo.ActiveTasksCountByService[t.ServiceID]++

vendor/github.com/docker/swarmkit/manager/scheduler/pipeline.go

@@ -14,6 +14,7 @@ var (
 		&PluginFilter{},
 		&ConstraintFilter{},
 		&PlatformFilter{},
+		&HostPortFilter{},
 	}
 )
 

vendor/github.com/docker/swarmkit/manager/state/raft/raft.go

@@ -1370,10 +1370,6 @@ func (n *Node) getLeaderConn() (*grpc.ClientConn, error) {
 // LeaderConn returns current connection to cluster leader or raftselector.ErrIsLeader
 // if current machine is leader.
 func (n *Node) LeaderConn(ctx context.Context) (*grpc.ClientConn, error) {
-	if atomic.LoadUint32(&n.ticksWithNoLeader) > lostQuorumTimeout {
-		return nil, errLostQuorum
-	}
-
 	cc, err := n.getLeaderConn()
 	if err == nil {
 		return cc, nil
@@ -1381,6 +1377,10 @@ func (n *Node) LeaderConn(ctx context.Context) (*grpc.ClientConn, error) {
 	if err == raftselector.ErrIsLeader {
 		return nil, err
 	}
+	if atomic.LoadUint32(&n.ticksWithNoLeader) > lostQuorumTimeout {
+		return nil, errLostQuorum
+	}
+
 	ticker := time.NewTicker(1 * time.Second)
 	defer ticker.Stop()
 	for {

vendor/github.com/docker/swarmkit/node/node.go

@@ -16,6 +16,7 @@ import (
 	"github.com/Sirupsen/logrus"
 	"github.com/boltdb/bolt"
 	"github.com/docker/docker/pkg/plugingetter"
+	metrics "github.com/docker/go-metrics"
 	"github.com/docker/swarmkit/agent"
 	"github.com/docker/swarmkit/agent/exec"
 	"github.com/docker/swarmkit/api"
@@ -41,6 +42,9 @@ const (
 )
 
 var (
+	nodeInfo    metrics.LabeledGauge
+	nodeManager metrics.Gauge
+
 	errNodeStarted    = errors.New("node: already started")
 	errNodeNotStarted = errors.New("node: not started")
 	certDirectory     = "certificates"
@@ -49,6 +53,16 @@ var (
 	ErrInvalidUnlockKey = errors.New("node is locked, and needs a valid unlock key")
 )
 
+func init() {
+	ns := metrics.NewNamespace("swarm", "node", nil)
+	nodeInfo = ns.NewLabeledGauge("info", "Information related to the swarm", "",
+		"swarm_id",
+		"node_id",
+	)
+	nodeManager = ns.NewGauge("manager", "Whether this node is a manager or not", "")
+	metrics.Register(ns)
+}
+
 // Config provides values for a Node.
 type Config struct {
 	// Hostname is the name of host for agent instance.
@@ -346,6 +360,17 @@ func (n *Node) run(ctx context.Context) (err error) {
 	var wg sync.WaitGroup
 	wg.Add(3)
 
+	nodeInfo.WithValues(
+		securityConfig.ClientTLSCreds.Organization(),
+		securityConfig.ClientTLSCreds.NodeID(),
+	).Set(1)
+
+	if n.currentRole() == api.NodeRoleManager {
+		nodeManager.Set(1)
+	} else {
+		nodeManager.Set(0)
+	}
+
 	updates := renewer.Start(ctx)
 	go func() {
 		for certUpdate := range updates {
@@ -357,6 +382,13 @@ func (n *Node) run(ctx context.Context) (err error) {
 			n.role = certUpdate.Role
 			n.roleCond.Broadcast()
 			n.Unlock()
+
+			// Export the new role.
+			if n.currentRole() == api.NodeRoleManager {
+				nodeManager.Set(1)
+			} else {
+				nodeManager.Set(0)
+			}
 		}
 
 		wg.Done()

vendor/github.com/docker/swarmkit/protobuf/plugin/plugin.pb.go

@@ -1144,7 +1144,7 @@ func init() { proto.RegisterFile("plugin.proto", fileDescriptorPlugin) }
 
 var fileDescriptorPlugin = []byte{
 	// 551 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x84, 0x52, 0xc1, 0x6e, 0xd3, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x52, 0xc1, 0x6e, 0xd3, 0x40,
 	0x10, 0xad, 0xd3, 0x36, 0x4d, 0xc6, 0x69, 0x29, 0x2b, 0x54, 0xad, 0x7a, 0xb0, 0xab, 0x46, 0x42,
 	0x41, 0x42, 0xa9, 0xd4, 0x63, 0x6e, 0x94, 0x5c, 0x22, 0x01, 0x45, 0x0e, 0x12, 0x37, 0x2c, 0xd7,
 	0x3b, 0x4d, 0x96, 0x3a, 0x5e, 0x6b, 0x77, 0x4d, 0x0b, 0x27, 0x7e, 0x80, 0x0f, 0xe0, 0xca, 0xd7,

vendor/github.com/docker/swarmkit/vendor.conf

@@ -6,6 +6,7 @@ github.com/matttproud/golang_protobuf_extensions v1.0.0
 
 # metrics
 github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
+github.com/docker/go-metrics d466d4f6fd960e01820085bd7e1a24426ee7ef18
 
 # etcd/raft
 github.com/coreos/etcd ea5389a79f40206170582c1ea076191b8622cb8e https://github.com/aaronlehmann/etcd # for https://github.com/coreos/etcd/pull/7830