Global Default Address Pool feature support

This feature allows user to specify list of subnets for global
default address pool. User can configure subnet list using
'swarm init' command. Daemon passes the information to swarmkit.
We validate the information in swarmkit, then store it in cluster
object. when IPAM init is called, we pass subnet list to IPAM driver.

Signed-off-by: selansen <elango.siva@docker.com>

api/swagger.yaml

@@ -8765,14 +8765,28 @@ paths:
                   nodes in order to reach the containers running on this node. Using this parameter it is possible to
                   separate the container data traffic from the management traffic of the cluster.
                 type: "string"
+              DefaultAddrPool:
+                description: |
+                  Default Address Pool specifies default subnet pools for global scope networks.
+                type: "array"
+                items:
+                  type: "string"
+                  example: ["10.10.0.0/16", "20.20.0.0/16"]
               ForceNewCluster:
                 description: "Force creation of a new swarm."
                 type: "boolean"
+              SubnetSize:
+                description: |
+                  SubnetSize specifies the subnet size of the networks created from the default subnet pool
+                type: "integer"
+                format: "uint32"
               Spec:
                 $ref: "#/definitions/SwarmSpec"
             example:
               ListenAddr: "0.0.0.0:2377"
               AdvertiseAddr: "192.168.1.1:2377"
+              DefaultAddrPool: ["10.10.0.0/8", "20.20.0.0/8"]
+              SubnetSize: 24
               ForceNewCluster: false
               Spec:
                 Orchestration: {}

api/types/swarm/swarm.go

@@ -1,6 +1,8 @@
 package swarm // import "github.com/docker/docker/api/types/swarm"
 
-import "time"
+import (
+	"time"
+)
 
 // ClusterInfo represents info about the cluster for outputting in "info"
 // it contains the same information as "Swarm", but without the JoinTokens
@@ -10,6 +12,8 @@ type ClusterInfo struct {
 	Spec                   Spec
 	TLSInfo                TLSInfo
 	RootRotationInProgress bool
+	DefaultAddrPool        []string
+	SubnetSize             uint32
 }
 
 // Swarm represents a swarm.
@@ -153,6 +157,8 @@ type InitRequest struct {
 	Spec             Spec
 	AutoLockManagers bool
 	Availability     NodeAvailability
+	DefaultAddrPool  []string
+	SubnetSize       uint32
 }
 
 // JoinRequest is the request used to join a swarm.

daemon/cluster/convert/swarm.go

@@ -40,6 +40,8 @@ func SwarmFromGRPC(c swarmapi.Cluster) types.Swarm {
 				TrustRoot: string(c.RootCA.CACert),
 			},
 			RootRotationInProgress: c.RootCA.RootRotation != nil,
+			DefaultAddrPool:        c.DefaultAddressPool,
+			SubnetSize:             c.SubnetSize,
 		},
 		JoinTokens: types.JoinTokens{
 			Worker:  c.RootCA.JoinTokens.Worker,

daemon/cluster/noderunner.go

@@ -3,6 +3,7 @@ package cluster // import "github.com/docker/docker/daemon/cluster"
 import (
 	"context"
 	"fmt"
+	"net"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -52,6 +53,10 @@ type nodeStartConfig struct {
 	AdvertiseAddr string
 	// DataPathAddr is the address that has to be used for the data path
 	DataPathAddr string
+	// DefaultAddressPool contains list of subnets
+	DefaultAddressPool []string
+	// SubnetSize contains subnet size of DefaultAddressPool
+	SubnetSize uint32
 	// JoinInProgress is set to true if a join operation has started, but
 	// not completed yet.
 	JoinInProgress bool
@@ -110,6 +115,12 @@ func (n *nodeRunner) start(conf nodeStartConfig) error {
 		joinAddr = conf.RemoteAddr
 	}
 
+	var defaultAddrPool []*net.IPNet
+	for _, address := range conf.DefaultAddressPool {
+		if _, b, err := net.ParseCIDR(address); err == nil {
+			defaultAddrPool = append(defaultAddrPool, b)
+		}
+	}
 	// Hostname is not set here. Instead, it is obtained from
 	// the node description that is reported periodically
 	swarmnodeConfig := swarmnode.Config{
@@ -117,6 +128,8 @@ func (n *nodeRunner) start(conf nodeStartConfig) error {
 		ListenControlAPI:   control,
 		ListenRemoteAPI:    conf.ListenAddr,
 		AdvertiseRemoteAPI: conf.AdvertiseAddr,
+		DefaultAddrPool:    defaultAddrPool,
+		SubnetSize:         int(conf.SubnetSize),
 		JoinAddr:           joinAddr,
 		StateDir:           n.cluster.root,
 		JoinToken:          conf.joinToken,

daemon/cluster/swarm.go

@@ -93,13 +93,15 @@ func (c *Cluster) Init(req types.InitRequest) (string, error) {
 	}
 
 	nr, err := c.newNodeRunner(nodeStartConfig{
-		forceNewCluster: req.ForceNewCluster,
-		autolock:        req.AutoLockManagers,
-		LocalAddr:       localAddr,
-		ListenAddr:      net.JoinHostPort(listenHost, listenPort),
-		AdvertiseAddr:   net.JoinHostPort(advertiseHost, advertisePort),
-		DataPathAddr:    dataPathAddr,
-		availability:    req.Availability,
+		forceNewCluster:    req.ForceNewCluster,
+		autolock:           req.AutoLockManagers,
+		LocalAddr:          localAddr,
+		ListenAddr:         net.JoinHostPort(listenHost, listenPort),
+		AdvertiseAddr:      net.JoinHostPort(advertiseHost, advertisePort),
+		DataPathAddr:       dataPathAddr,
+		DefaultAddressPool: req.DefaultAddrPool,
+		SubnetSize:         req.SubnetSize,
+		availability:       req.Availability,
 	})
 	if err != nil {
 		return "", err

docs/api/version-history.md

@@ -21,6 +21,9 @@ keywords: "API, Docker, rcli, REST, documentation"
   and `OperatingSystem` if the daemon was unable to obtain this information.
 * `GET /info` now returns information about the product license, if a license
   has been applied to the daemon.
+* `POST /swarm/init` now accepts a `DefaultAddrPool` property to set global scope default address pool
+* `POST /swarm/init` now accepts a `SubnetSize` property to set global scope networks by giving the
+  length of the subnet masks for every such network
 
 ## V1.38 API changes
 

integration/network/service_test.go

@@ -313,3 +313,50 @@ func noServices(client client.ServiceAPIClient) func(log poll.LogT) poll.Result
 		}
 	}
 }
+
+func TestServiceWithDefaultAddressPoolInit(t *testing.T) {
+	defer setupTest(t)()
+	var ops = []func(*daemon.Daemon){}
+	ipAddr := []string{"20.20.0.0/16"}
+	ops = append(ops, daemon.WithSwarmDefaultAddrPool(ipAddr))
+	ops = append(ops, daemon.WithSwarmDefaultAddrPoolSubnetSize(24))
+	d := swarm.NewSwarm(t, testEnv, ops...)
+
+	cli := d.NewClientT(t)
+	defer cli.Close()
+
+	// Create a overlay network
+	name := "saanvisthira" + t.Name()
+	network.CreateNoError(t, context.Background(), cli, name,
+		network.WithDriver("overlay"))
+
+	var instances uint64 = 1
+	serviceName := "TestService" + t.Name()
+	serviceID := swarm.CreateService(t, d,
+		swarm.ServiceWithReplicas(instances),
+		swarm.ServiceWithName(serviceName),
+		swarm.ServiceWithNetwork(name),
+	)
+
+	poll.WaitOn(t, serviceRunningCount(cli, serviceID, instances), swarm.ServicePoll)
+
+	_, _, err := cli.ServiceInspectWithRaw(context.Background(), serviceID, types.ServiceInspectOptions{})
+	assert.NilError(t, err)
+
+	out, err := cli.NetworkInspect(context.Background(), name, types.NetworkInspectOptions{})
+	assert.NilError(t, err)
+	assert.Equal(t, out.IPAM.Config[0].Subnet, "20.20.0.0/24")
+
+	err = cli.ServiceRemove(context.Background(), serviceID)
+	assert.NilError(t, err)
+	d.SwarmLeave(true)
+	d.Stop(t)
+
+	// Clean up , set it back to original one to make sure other tests don't fail
+	ipAddr = []string{"10.10.0.0/8"}
+	ops = append(ops, daemon.WithSwarmDefaultAddrPool(ipAddr))
+	ops = append(ops, daemon.WithSwarmDefaultAddrPoolSubnetSize(24))
+	d = swarm.NewSwarm(t, testEnv, ops...)
+	d.SwarmLeave(true)
+	defer d.Stop(t)
+}

internal/test/daemon/daemon.go

@@ -73,7 +73,8 @@ type Daemon struct {
 	// swarm related field
 	swarmListenAddr string
 	SwarmPort       int // FIXME(vdemeester) should probably not be exported
-
+	DefaultAddrPool []string
+	SubnetSize      uint32
 	// cached information
 	CachedInfo types.Info
 }

internal/test/daemon/ops.go

@@ -34,6 +34,20 @@ func WithSwarmListenAddr(listenAddr string) func(*Daemon) {
 	}
 }
 
+// WithSwarmDefaultAddrPool sets the swarm default address pool to use for swarm mode
+func WithSwarmDefaultAddrPool(defaultAddrPool []string) func(*Daemon) {
+	return func(d *Daemon) {
+		d.DefaultAddrPool = defaultAddrPool
+	}
+}
+
+// WithSwarmDefaultAddrPoolSubnetSize sets the subnet length mask of swarm default address pool to use for swarm mode
+func WithSwarmDefaultAddrPoolSubnetSize(subnetSize uint32) func(*Daemon) {
+	return func(d *Daemon) {
+		d.SubnetSize = subnetSize
+	}
+}
+
 // WithEnvironment sets options from internal/test/environment.Execution struct
 func WithEnvironment(e environment.Execution) func(*Daemon) {
 	return func(d *Daemon) {

internal/test/daemon/swarm.go

@@ -69,6 +69,10 @@ func (d *Daemon) SwarmInit(t assert.TestingT, req swarm.InitRequest) {
 	if req.ListenAddr == "" {
 		req.ListenAddr = fmt.Sprintf("%s:%d", d.swarmListenAddr, d.SwarmPort)
 	}
+	if req.DefaultAddrPool == nil {
+		req.DefaultAddrPool = d.DefaultAddrPool
+		req.SubnetSize = d.SubnetSize
+	}
 	cli := d.NewClientT(t)
 	defer cli.Close()
 	_, err := cli.SwarmInit(context.Background(), req)

vendor.conf

@@ -37,7 +37,7 @@ github.com/mitchellh/hashstructure 2bca23e0e452137f789efbc8610126fd8b94f73b
 #get libnetwork packages
 
 # When updating, also update LIBNETWORK_COMMIT in hack/dockerfile/install/proxy accordingly
-github.com/docker/libnetwork f30a35b091cc2a431ef9856c75c343f75bb5f2e2
+github.com/docker/libnetwork a79d3687931697244b8e03485bf7b2042f8ec6b6
 github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
 github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
 github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec
@@ -125,7 +125,7 @@ github.com/containerd/ttrpc 94dde388801693c54f88a6596f713b51a8b30b2d
 github.com/gogo/googleapis 08a7655d27152912db7aaf4f983275eaf8d128ef
 
 # cluster
-github.com/docker/swarmkit 8852e8840e30d69db0b39a4a3d6447362e17c64f
+github.com/docker/swarmkit cfa742c8abe6f8e922f6e4e920153c408e7d9c3b
 github.com/gogo/protobuf v1.0.0
 github.com/cloudflare/cfssl 1.3.2
 github.com/fernet/fernet-go 1b2437bc582b3cfbb341ee5a29f8ef5b42912ff2

vendor/github.com/docker/libnetwork/ipam/allocator.go

@@ -45,9 +45,10 @@ func NewAllocator(lcDs, glDs datastore.DataStore) (*Allocator, error) {
 	a := &Allocator{}
 
 	// Load predefined subnet pools
+
 	a.predefined = map[string][]*net.IPNet{
-		localAddressSpace:  ipamutils.PredefinedBroadNetworks,
-		globalAddressSpace: ipamutils.PredefinedGranularNetworks,
+		localAddressSpace:  ipamutils.GetLocalScopeDefaultNetworks(),
+		globalAddressSpace: ipamutils.GetGlobalScopeDefaultNetworks(),
 	}
 
 	// Initialize asIndices map

vendor/github.com/docker/libnetwork/ipams/builtin/builtin_unix.go

@@ -35,7 +35,7 @@ func Init(ic ipamapi.Callback, l, g interface{}) error {
 		}
 	}
 
-	ipamutils.InitNetworks(GetDefaultIPAddressPool())
+	ipamutils.ConfigLocalScopeDefaultNetworks(GetDefaultIPAddressPool())
 
 	a, err := ipam.NewAllocator(localDs, globalDs)
 	if err != nil {

vendor/github.com/docker/libnetwork/ipams/builtin/builtin_windows.go

@@ -37,7 +37,7 @@ func InitDockerDefault(ic ipamapi.Callback, l, g interface{}) error {
 		}
 	}
 
-	ipamutils.InitNetworks(nil)
+	ipamutils.ConfigLocalScopeDefaultNetworks(nil)
 
 	a, err := ipam.NewAllocator(localDs, globalDs)
 	if err != nil {

vendor/github.com/docker/libnetwork/ipamutils/utils.go

@@ -5,23 +5,20 @@ import (
 	"fmt"
 	"net"
 	"sync"
-
-	"github.com/sirupsen/logrus"
 )
 
 var (
-	// PredefinedBroadNetworks contains a list of 31 IPv4 private networks with host size 16 and 12
-	// (172.17-31.x.x/16, 192.168.x.x/20) which do not overlap with the networks in `PredefinedGranularNetworks`
-	PredefinedBroadNetworks []*net.IPNet
-	// PredefinedGranularNetworks contains a list of 64K IPv4 private networks with host size 8
-	// (10.x.x.x/24) which do not overlap with the networks in `PredefinedBroadNetworks`
-	PredefinedGranularNetworks []*net.IPNet
-	initNetworksOnce           sync.Once
-
-	defaultBroadNetwork = []*NetworkToSplit{{"172.17.0.0/16", 16}, {"172.18.0.0/16", 16}, {"172.19.0.0/16", 16},
+	// PredefinedLocalScopeDefaultNetworks contains a list of 31 IPv4 private networks with host size 16 and 12
+	// (172.17-31.x.x/16, 192.168.x.x/20) which do not overlap with the networks in `PredefinedGlobalScopeDefaultNetworks`
+	PredefinedLocalScopeDefaultNetworks []*net.IPNet
+	// PredefinedGlobalScopeDefaultNetworks contains a list of 64K IPv4 private networks with host size 8
+	// (10.x.x.x/24) which do not overlap with the networks in `PredefinedLocalScopeDefaultNetworks`
+	PredefinedGlobalScopeDefaultNetworks []*net.IPNet
+	mutex                                sync.Mutex
+	localScopeDefaultNetworks            = []*NetworkToSplit{{"172.17.0.0/16", 16}, {"172.18.0.0/16", 16}, {"172.19.0.0/16", 16},
 		{"172.20.0.0/14", 16}, {"172.24.0.0/14", 16}, {"172.28.0.0/14", 16},
 		{"192.168.0.0/16", 20}}
-	defaultGranularNetwork = []*NetworkToSplit{{"10.0.0.0/8", 24}}
+	globalScopeDefaultNetworks = []*NetworkToSplit{{"10.0.0.0/8", 24}}
 )
 
 // NetworkToSplit represent a network that has to be split in chunks with mask length Size.
@@ -34,19 +31,61 @@ type NetworkToSplit struct {
 	Size int    `json:"size"`
 }
 
-// InitNetworks initializes the broad network pool and the granular network pool
-func InitNetworks(defaultAddressPool []*NetworkToSplit) {
-	initNetworksOnce.Do(func() {
-		// error ingnored should never fail
-		PredefinedGranularNetworks, _ = splitNetworks(defaultGranularNetwork)
-		if defaultAddressPool == nil {
-			defaultAddressPool = defaultBroadNetwork
-		}
-		var err error
-		if PredefinedBroadNetworks, err = splitNetworks(defaultAddressPool); err != nil {
-			logrus.WithError(err).Error("InitAddressPools failed to initialize the default address pool")
-		}
-	})
+func init() {
+	var err error
+	if PredefinedGlobalScopeDefaultNetworks, err = splitNetworks(globalScopeDefaultNetworks); err != nil {
+		//we are going to panic in case of error as we should never get into this state
+		panic("InitAddressPools failed to initialize the global scope default address pool")
+	}
+
+	if PredefinedLocalScopeDefaultNetworks, err = splitNetworks(localScopeDefaultNetworks); err != nil {
+		//we are going to panic in case of error as we should never get into this state
+		panic("InitAddressPools failed to initialize the local scope default address pool")
+	}
+}
+
+// configDefaultNetworks configures local as well global default pool based on input
+func configDefaultNetworks(defaultAddressPool []*NetworkToSplit, result *[]*net.IPNet) error {
+	mutex.Lock()
+	defer mutex.Unlock()
+	defaultNetworks, err := splitNetworks(defaultAddressPool)
+	if err != nil {
+		return err
+	}
+	*result = defaultNetworks
+	return nil
+}
+
+// GetGlobalScopeDefaultNetworks returns PredefinedGlobalScopeDefaultNetworks
+func GetGlobalScopeDefaultNetworks() []*net.IPNet {
+	mutex.Lock()
+	defer mutex.Unlock()
+	return PredefinedGlobalScopeDefaultNetworks
+}
+
+// GetLocalScopeDefaultNetworks returns PredefinedLocalScopeDefaultNetworks
+func GetLocalScopeDefaultNetworks() []*net.IPNet {
+	mutex.Lock()
+	defer mutex.Unlock()
+	return PredefinedLocalScopeDefaultNetworks
+}
+
+// ConfigGlobalScopeDefaultNetworks configures global default pool.
+// Ideally this will be called from SwarmKit as part of swarm init
+func ConfigGlobalScopeDefaultNetworks(defaultAddressPool []*NetworkToSplit) error {
+	if defaultAddressPool == nil {
+		defaultAddressPool = globalScopeDefaultNetworks
+	}
+	return configDefaultNetworks(defaultAddressPool, &PredefinedGlobalScopeDefaultNetworks)
+}
+
+// ConfigLocalScopeDefaultNetworks configures local default pool.
+// Ideally this will be called during libnetwork init
+func ConfigLocalScopeDefaultNetworks(defaultAddressPool []*NetworkToSplit) error {
+	if defaultAddressPool == nil {
+		return nil
+	}
+	return configDefaultNetworks(defaultAddressPool, &PredefinedLocalScopeDefaultNetworks)
 }
 
 // splitNetworks takes a slice of networks, split them accordingly and returns them

vendor/github.com/docker/libnetwork/netutils/utils_linux.go

@@ -94,8 +94,8 @@ func ElectInterfaceAddresses(name string) ([]*net.IPNet, []*net.IPNet, error) {
 	}
 
 	if link == nil || len(v4Nets) == 0 {
-		// Choose from predefined broad networks
-		v4Net, err := FindAvailableNetwork(ipamutils.PredefinedBroadNetworks)
+		// Choose from predefined local scope  networks
+		v4Net, err := FindAvailableNetwork(ipamutils.PredefinedLocalScopeDefaultNetworks)
 		if err != nil {
 			return nil, nil, err
 		}

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

@@ -84,9 +84,13 @@ func (*ListNodesRequest) ProtoMessage()               {}
 func (*ListNodesRequest) Descriptor() ([]byte, []int) { return fileDescriptorControl, []int{2} }
 
 type ListNodesRequest_Filters struct {
-	Names       []string              `protobuf:"bytes,1,rep,name=names" json:"names,omitempty"`
-	IDPrefixes  []string              `protobuf:"bytes,2,rep,name=id_prefixes,json=idPrefixes" json:"id_prefixes,omitempty"`
-	Labels      map[string]string     `protobuf:"bytes,3,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Names      []string `protobuf:"bytes,1,rep,name=names" json:"names,omitempty"`
+	IDPrefixes []string `protobuf:"bytes,2,rep,name=id_prefixes,json=idPrefixes" json:"id_prefixes,omitempty"`
+	// Labels refers to engine labels, which are labels set by the user on the
+	// node and reported back to the managers
+	Labels map[string]string `protobuf:"bytes,3,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// NodeLabels are labels set on the node object on the managers.
+	NodeLabels  map[string]string     `protobuf:"bytes,7,rep,name=node_labels,json=nodeLabels" json:"node_labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Memberships []NodeSpec_Membership `protobuf:"varint,4,rep,name=memberships,enum=docker.swarmkit.v1.NodeSpec_Membership" json:"memberships,omitempty"`
 	Roles       []NodeRole            `protobuf:"varint,5,rep,name=roles,enum=docker.swarmkit.v1.NodeRole" json:"roles,omitempty"`
 	// NamePrefixes matches all objects with the given prefixes
@@ -1105,6 +1109,13 @@ func (m *ListNodesRequest_Filters) CopyFrom(src interface{}) {
 		}
 	}
 
+	if o.NodeLabels != nil {
+		m.NodeLabels = make(map[string]string, len(o.NodeLabels))
+		for k, v := range o.NodeLabels {
+			m.NodeLabels[k] = v
+		}
+	}
+
 	if o.Memberships != nil {
 		m.Memberships = make([]NodeSpec_Membership, len(o.Memberships))
 		copy(m.Memberships, o.Memberships)
@@ -3640,6 +3651,23 @@ func (m *ListNodesRequest_Filters) MarshalTo(dAtA []byte) (int, error) {
 			i += copy(dAtA[i:], s)
 		}
 	}
+	if len(m.NodeLabels) > 0 {
+		for k, _ := range m.NodeLabels {
+			dAtA[i] = 0x3a
+			i++
+			v := m.NodeLabels[k]
+			mapSize := 1 + len(k) + sovControl(uint64(len(k))) + 1 + len(v) + sovControl(uint64(len(v)))
+			i = encodeVarintControl(dAtA, i, uint64(mapSize))
+			dAtA[i] = 0xa
+			i++
+			i = encodeVarintControl(dAtA, i, uint64(len(k)))
+			i += copy(dAtA[i:], k)
+			dAtA[i] = 0x12
+			i++
+			i = encodeVarintControl(dAtA, i, uint64(len(v)))
+			i += copy(dAtA[i:], v)
+		}
+	}
 	return i, nil
 }
 
@@ -6985,6 +7013,14 @@ func (m *ListNodesRequest_Filters) Size() (n int) {
 			n += 1 + l + sovControl(uint64(l))
 		}
 	}
+	if len(m.NodeLabels) > 0 {
+		for k, v := range m.NodeLabels {
+			_ = k
+			_ = v
+			mapEntrySize := 1 + len(k) + sovControl(uint64(len(k))) + 1 + len(v) + sovControl(uint64(len(v)))
+			n += mapEntrySize + 1 + sovControl(uint64(mapEntrySize))
+		}
+	}
 	return n
 }
 
@@ -7883,6 +7919,16 @@ func (this *ListNodesRequest_Filters) String() string {
 		mapStringForLabels += fmt.Sprintf("%v: %v,", k, this.Labels[k])
 	}
 	mapStringForLabels += "}"
+	keysForNodeLabels := make([]string, 0, len(this.NodeLabels))
+	for k, _ := range this.NodeLabels {
+		keysForNodeLabels = append(keysForNodeLabels, k)
+	}
+	sortkeys.Strings(keysForNodeLabels)
+	mapStringForNodeLabels := "map[string]string{"
+	for _, k := range keysForNodeLabels {
+		mapStringForNodeLabels += fmt.Sprintf("%v: %v,", k, this.NodeLabels[k])
+	}
+	mapStringForNodeLabels += "}"
 	s := strings.Join([]string{`&ListNodesRequest_Filters{`,
 		`Names:` + fmt.Sprintf("%v", this.Names) + `,`,
 		`IDPrefixes:` + fmt.Sprintf("%v", this.IDPrefixes) + `,`,
@@ -7890,6 +7936,7 @@ func (this *ListNodesRequest_Filters) String() string {
 		`Memberships:` + fmt.Sprintf("%v", this.Memberships) + `,`,
 		`Roles:` + fmt.Sprintf("%v", this.Roles) + `,`,
 		`NamePrefixes:` + fmt.Sprintf("%v", this.NamePrefixes) + `,`,
+		`NodeLabels:` + mapStringForNodeLabels + `,`,
 		`}`,
 	}, "")
 	return s
@@ -9221,6 +9268,124 @@ func (m *ListNodesRequest_Filters) Unmarshal(dAtA []byte) error {
 			}
 			m.NamePrefixes = append(m.NamePrefixes, string(dAtA[iNdEx:postIndex]))
 			iNdEx = postIndex
+		case 7:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NodeLabels", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowControl
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthControl
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.NodeLabels == nil {
+				m.NodeLabels = make(map[string]string)
+			}
+			var mapkey string
+			var mapvalue string
+			for iNdEx < postIndex {
+				entryPreIndex := iNdEx
+				var wire uint64
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return ErrIntOverflowControl
+					}
+					if iNdEx >= l {
+						return io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					wire |= (uint64(b) & 0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				fieldNum := int32(wire >> 3)
+				if fieldNum == 1 {
+					var stringLenmapkey uint64
+					for shift := uint(0); ; shift += 7 {
+						if shift >= 64 {
+							return ErrIntOverflowControl
+						}
+						if iNdEx >= l {
+							return io.ErrUnexpectedEOF
+						}
+						b := dAtA[iNdEx]
+						iNdEx++
+						stringLenmapkey |= (uint64(b) & 0x7F) << shift
+						if b < 0x80 {
+							break
+						}
+					}
+					intStringLenmapkey := int(stringLenmapkey)
+					if intStringLenmapkey < 0 {
+						return ErrInvalidLengthControl
+					}
+					postStringIndexmapkey := iNdEx + intStringLenmapkey
+					if postStringIndexmapkey > l {
+						return io.ErrUnexpectedEOF
+					}
+					mapkey = string(dAtA[iNdEx:postStringIndexmapkey])
+					iNdEx = postStringIndexmapkey
+				} else if fieldNum == 2 {
+					var stringLenmapvalue uint64
+					for shift := uint(0); ; shift += 7 {
+						if shift >= 64 {
+							return ErrIntOverflowControl
+						}
+						if iNdEx >= l {
+							return io.ErrUnexpectedEOF
+						}
+						b := dAtA[iNdEx]
+						iNdEx++
+						stringLenmapvalue |= (uint64(b) & 0x7F) << shift
+						if b < 0x80 {
+							break
+						}
+					}
+					intStringLenmapvalue := int(stringLenmapvalue)
+					if intStringLenmapvalue < 0 {
+						return ErrInvalidLengthControl
+					}
+					postStringIndexmapvalue := iNdEx + intStringLenmapvalue
+					if postStringIndexmapvalue > l {
+						return io.ErrUnexpectedEOF
+					}
+					mapvalue = string(dAtA[iNdEx:postStringIndexmapvalue])
+					iNdEx = postStringIndexmapvalue
+				} else {
+					iNdEx = entryPreIndex
+					skippy, err := skipControl(dAtA[iNdEx:])
+					if err != nil {
+						return err
+					}
+					if skippy < 0 {
+						return ErrInvalidLengthControl
+					}
+					if (iNdEx + skippy) > postIndex {
+						return io.ErrUnexpectedEOF
+					}
+					iNdEx += skippy
+				}
+			}
+			m.NodeLabels[mapkey] = mapvalue
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipControl(dAtA[iNdEx:])
@@ -15950,139 +16115,141 @@ var (
 func init() { proto.RegisterFile("github.com/docker/swarmkit/api/control.proto", fileDescriptorControl) }
 
 var fileDescriptorControl = []byte{
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+	0xda, 0x4a, 0x1d, 0x2f, 0xf1, 0x7f, 0x58, 0x7d, 0xf8, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0x96,
+	0x0e, 0xd9, 0x9f, 0xc9, 0x2b, 0x00, 0x00,
 }

vendor/github.com/docker/swarmkit/api/control.proto

@@ -175,7 +175,11 @@ message ListNodesRequest {
 	message Filters {
 		repeated string names = 1;
 		repeated string id_prefixes = 2;
+		// Labels refers to engine labels, which are labels set by the user on the
+		// node and reported back to the managers
 		map<string, string> labels = 3;
+		// NodeLabels are labels set on the node object on the managers.
+		map<string, string> node_labels = 7;
 		repeated NodeSpec.Membership memberships = 4 [packed=false];
 		repeated NodeRole roles = 5 [packed=false];
 		// NamePrefixes matches all objects with the given prefixes

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

@@ -274,6 +274,13 @@ type Cluster struct {
 	// reject joining the cluster.  Nodes that report themselves to be non-FIPS
 	// should be rejected from the cluster.
 	FIPS bool `protobuf:"varint,10,opt,name=fips,proto3" json:"fips,omitempty"`
+	// This field specifies default subnet pools for global scope networks. If
+	// unspecified, Docker will use the predefined subnets as it works on older releases.
+	// Format Example : {"20.20.0.0/16",""20.20.0.0/16"}
+	DefaultAddressPool []string `protobuf:"bytes,11,rep,name=defaultAddressPool" json:"defaultAddressPool,omitempty"`
+	// This flag specifies the default subnet size of global scope networks by giving
+	// the length of the subnet masks for every such network
+	SubnetSize uint32 `protobuf:"varint,12,opt,name=subnetSize,proto3" json:"subnetSize,omitempty"`
 }
 
 func (m *Cluster) Reset()                    { *m = Cluster{} }
@@ -658,6 +665,11 @@ func (m *Cluster) CopyFrom(src interface{}) {
 		}
 	}
 
+	if o.DefaultAddressPool != nil {
+		m.DefaultAddressPool = make([]string, len(o.DefaultAddressPool))
+		copy(m.DefaultAddressPool, o.DefaultAddressPool)
+	}
+
 }
 
 func (m *Secret) Copy() *Secret {
@@ -1440,6 +1452,26 @@ func (m *Cluster) MarshalTo(dAtA []byte) (int, error) {
 		}
 		i++
 	}
+	if len(m.DefaultAddressPool) > 0 {
+		for _, s := range m.DefaultAddressPool {
+			dAtA[i] = 0x5a
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
+	if m.SubnetSize != 0 {
+		dAtA[i] = 0x60
+		i++
+		i = encodeVarintObjects(dAtA, i, uint64(m.SubnetSize))
+	}
 	return i, nil
 }
 
@@ -1924,6 +1956,15 @@ func (m *Cluster) Size() (n int) {
 	if m.FIPS {
 		n += 2
 	}
+	if len(m.DefaultAddressPool) > 0 {
+		for _, s := range m.DefaultAddressPool {
+			l = len(s)
+			n += 1 + l + sovObjects(uint64(l))
+		}
+	}
+	if m.SubnetSize != 0 {
+		n += 1 + sovObjects(uint64(m.SubnetSize))
+	}
 	return n
 }
 
@@ -4804,6 +4845,8 @@ func (this *Cluster) String() string {
 		`BlacklistedCertificates:` + mapStringForBlacklistedCertificates + `,`,
 		`UnlockKeys:` + strings.Replace(fmt.Sprintf("%v", this.UnlockKeys), "EncryptionKey", "EncryptionKey", 1) + `,`,
 		`FIPS:` + fmt.Sprintf("%v", this.FIPS) + `,`,
+		`DefaultAddressPool:` + fmt.Sprintf("%v", this.DefaultAddressPool) + `,`,
+		`SubnetSize:` + fmt.Sprintf("%v", this.SubnetSize) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -7241,6 +7284,54 @@ func (m *Cluster) Unmarshal(dAtA []byte) error {
 				}
 			}
 			m.FIPS = bool(v != 0)
+		case 11:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field DefaultAddressPool", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowObjects
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthObjects
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.DefaultAddressPool = append(m.DefaultAddressPool, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
+		case 12:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field SubnetSize", wireType)
+			}
+			m.SubnetSize = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowObjects
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.SubnetSize |= (uint32(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipObjects(dAtA[iNdEx:])
@@ -8037,102 +8128,104 @@ var (
 func init() { proto.RegisterFile("github.com/docker/swarmkit/api/objects.proto", fileDescriptorObjects) }
 
 var fileDescriptorObjects = []byte{
-	// 1544 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xcc, 0x58, 0x4d, 0x73, 0xdb, 0x4c,
-	0x1d, 0xaf, 0x6c, 0xc5, 0x2f, 0x7f, 0x27, 0x26, 0xec, 0x13, 0x82, 0x6a, 0x82, 0x1d, 0xfc, 0x0c,
-	0xcc, 0x33, 0xcf, 0x74, 0x9c, 0x12, 0x0a, 0xa4, 0x81, 0xd2, 0xda, 0x49, 0x68, 0x3d, 0xa5, 0x34,
-	0xb3, 0x29, 0x2d, 0x37, 0xb1, 0x91, 0x36, 0xae, 0xb0, 0xac, 0xd5, 0x68, 0xd7, 0x2e, 0xbe, 0xf5,
-	0x1c, 0x3e, 0x40, 0x6e, 0x1c, 0xfa, 0x2d, 0xb8, 0x70, 0xe0, 0xd4, 0x23, 0xc3, 0x81, 0xe1, 0x94,
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+	0xb8, 0xdc, 0x6b, 0x09, 0x56, 0xd9, 0x1b, 0x7f, 0xae, 0x2f, 0x61, 0x29, 0x64, 0x91, 0xe0, 0x56,
+	0x4e, 0x05, 0x67, 0x66, 0xbe, 0x1f, 0xb2, 0x48, 0xec, 0xb1, 0xe0, 0xd8, 0xeb, 0xe3, 0x18, 0x8c,
+	0x5e, 0x41, 0x65, 0xec, 0x45, 0x62, 0x44, 0x7c, 0xdb, 0x0b, 0xb9, 0x95, 0x57, 0xdc, 0x1f, 0x5c,
+	0xf5, 0x64, 0xeb, 0x65, 0x8c, 0xef, 0x1e, 0x76, 0xaa, 0xd3, 0xb3, 0x06, 0xcc, 0xb6, 0x1c, 0x83,
+	0x16, 0xd5, 0x0d, 0x79, 0xed, 0x19, 0x94, 0x67, 0x37, 0xe8, 0x01, 0x40, 0x10, 0xe7, 0x85, 0x3d,
+	0x8b, 0xec, 0x95, 0xe9, 0x59, 0xa3, 0xac, 0xb3, 0xa5, 0xbb, 0x8f, 0xcb, 0x1a, 0xd0, 0x75, 0x11,
+	0x02, 0x93, 0xb8, 0x6e, 0xa4, 0xe2, 0xbc, 0x8c, 0xd5, 0xba, 0xf9, 0xa7, 0x22, 0x98, 0x2f, 0x08,
+	0x1f, 0xdc, 0x75, 0x89, 0x96, 0x6f, 0x2e, 0x64, 0xc6, 0x03, 0x00, 0x1e, 0xc7, 0x9b, 0x34, 0xc7,
+	0x9c, 0x9b, 0xa3, 0xa3, 0x50, 0x9a, 0xa3, 0x01, 0xb1, 0x39, 0xdc, 0x67, 0x42, 0x25, 0x81, 0x89,
+	0xd5, 0x1a, 0x7d, 0x0a, 0xc5, 0x80, 0xb9, 0x8a, 0x5e, 0x50, 0x74, 0x98, 0x9e, 0x35, 0x0a, 0xb2,
+	0xe8, 0x74, 0xf7, 0x71, 0x41, 0x5e, 0x75, 0x5d, 0x55, 0x74, 0x82, 0x80, 0x09, 0x22, 0x0b, 0x3a,
+	0xd7, 0xb5, 0x33, 0x33, 0xfa, 0xdb, 0x73, 0x58, 0x52, 0xef, 0x52, 0x4c, 0xf4, 0x12, 0x3e, 0x49,
+	0xf4, 0x4d, 0x0b, 0x2c, 0xdd, 0x46, 0x20, 0xd2, 0x12, 0x52, 0x37, 0xa9, 0x1e, 0x53, 0xbe, 0xbc,
+	0xc7, 0x28, 0x0f, 0x66, 0xf5, 0x98, 0x0e, 0xac, 0xb8, 0x94, 0x7b, 0x11, 0x75, 0x55, 0x99, 0xa0,
+	0x2a, 0x33, 0xab, 0xdb, 0xdf, 0xbd, 0x4a, 0x08, 0xc5, 0xcb, 0x9a, 0xa3, 0x76, 0xa8, 0x0d, 0x25,
+	0x1d, 0x37, 0xdc, 0xaa, 0xdc, 0xa6, 0x28, 0xcf, 0x68, 0xe7, 0xca, 0xdc, 0xf2, 0xad, 0xca, 0xdc,
+	0x43, 0x00, 0x9f, 0xf5, 0x6d, 0x37, 0xf2, 0xc6, 0x34, 0xb2, 0x56, 0xf4, 0xc4, 0x91, 0xc1, 0xdd,
+	0x57, 0x08, 0x5c, 0xf6, 0x59, 0x3f, 0x5e, 0x2e, 0x14, 0xa5, 0xea, 0x2d, 0x8b, 0x12, 0x81, 0x1a,
+	0xe1, 0xdc, 0xeb, 0x07, 0xd4, 0xb5, 0xfb, 0x34, 0xa0, 0x91, 0xe7, 0xd8, 0x11, 0xe5, 0x6c, 0x14,
+	0x39, 0x94, 0x5b, 0xdf, 0x50, 0x9e, 0xc8, 0x9c, 0x19, 0x1e, 0xc7, 0x60, 0xac, 0xb1, 0xd8, 0x4a,
+	0xc4, 0x5c, 0xb8, 0xe0, 0xbb, 0xb5, 0x93, 0xd3, 0xe6, 0x3a, 0xac, 0xa5, 0xcb, 0xd4, 0x8e, 0xf1,
+	0xc8, 0x78, 0x62, 0x1c, 0x1a, 0xcd, 0xbf, 0xe5, 0xe0, 0x9b, 0x0b, 0x3e, 0x45, 0x3f, 0x86, 0xa2,
+	0xf6, 0xea, 0x55, 0x93, 0x9f, 0xe6, 0xe1, 0x04, 0x8b, 0x36, 0xa0, 0x2c, 0x53, 0x9c, 0x72, 0x4e,
+	0xe3, 0xe2, 0x55, 0xc6, 0xf3, 0x03, 0x64, 0x41, 0x91, 0xf8, 0x1e, 0x91, 0x77, 0x79, 0x75, 0x97,
+	0x6c, 0xd1, 0x08, 0xd6, 0x63, 0xd7, 0xdb, 0xf3, 0x06, 0x6b, 0xb3, 0x50, 0x70, 0xcb, 0x54, 0xf6,
+	0x7f, 0x7d, 0xa3, 0x48, 0xd0, 0x1f, 0x67, 0x7e, 0xf0, 0x3c, 0x14, 0xfc, 0x20, 0x10, 0xd1, 0x04,
+	0xaf, 0xb9, 0x19, 0x57, 0xb5, 0xc7, 0x70, 0xff, 0x52, 0x0a, 0x5a, 0x85, 0xfc, 0x80, 0x4e, 0xe2,
+	0xf2, 0x84, 0xe5, 0x12, 0xad, 0xc1, 0xd2, 0x98, 0xf8, 0x23, 0xaa, 0xab, 0x59, 0xbc, 0xd9, 0xcd,
+	0xed, 0x18, 0xcd, 0x77, 0x39, 0x28, 0x6a, 0x75, 0xee, 0xba, 0xe5, 0xeb, 0x67, 0x17, 0x0a, 0xdb,
+	0x57, 0xb0, 0xac, 0x5d, 0x1a, 0x67, 0xa4, 0x79, 0x6d, 0x4c, 0x57, 0x62, 0x7c, 0x9c, 0x8d, 0x5f,
+	0x81, 0xe9, 0x85, 0x64, 0xa8, 0xdb, 0x7d, 0xe6, 0xcb, 0xdd, 0xc3, 0xf6, 0xb3, 0xe7, 0x61, 0x5c,
+	0x58, 0x4a, 0xd3, 0xb3, 0x86, 0x29, 0x0f, 0xb0, 0xa2, 0x65, 0x36, 0xc6, 0x77, 0x05, 0x28, 0xee,
+	0xf9, 0x23, 0x2e, 0x68, 0x74, 0xd7, 0x4e, 0xd2, 0xcf, 0x2e, 0x38, 0x69, 0x0f, 0x8a, 0x11, 0x63,
+	0xc2, 0x76, 0xc8, 0x55, 0xfe, 0xc1, 0x8c, 0x89, 0xbd, 0x76, 0xa7, 0x2a, 0x89, 0xb2, 0xb6, 0xc7,
+	0x7b, 0x5c, 0x90, 0xd4, 0x3d, 0x82, 0x5e, 0xc1, 0x7a, 0xd2, 0x11, 0x7b, 0x8c, 0x09, 0x2e, 0x22,
+	0x12, 0xda, 0x03, 0x3a, 0x91, 0xb3, 0x52, 0xfe, 0xb2, 0x41, 0xfb, 0x20, 0x70, 0xa2, 0x89, 0x72,
+	0xde, 0x53, 0x3a, 0xc1, 0x6b, 0x5a, 0x40, 0x27, 0xe1, 0x3f, 0xa5, 0x13, 0x8e, 0xbe, 0x86, 0x0d,
+	0x3a, 0x83, 0x49, 0x89, 0xb6, 0x4f, 0x86, 0xb2, 0xd7, 0xdb, 0x8e, 0xcf, 0x9c, 0x81, 0x6a, 0x37,
+	0x26, 0xbe, 0x4f, 0xd3, 0xa2, 0x7e, 0x15, 0x23, 0xf6, 0x24, 0x00, 0x71, 0xb0, 0x7a, 0x3e, 0x71,
+	0x06, 0xbe, 0xc7, 0xe5, 0xff, 0x52, 0xa9, 0xb9, 0x59, 0x76, 0x0c, 0xa9, 0xdb, 0xce, 0x15, 0xde,
+	0x6a, 0x75, 0xe6, 0xdc, 0xd4, 0x14, 0xae, 0x33, 0xea, 0xdb, 0xbd, 0xec, 0x5b, 0xd4, 0x81, 0xca,
+	0x28, 0x90, 0xcf, 0xc7, 0x3e, 0x28, 0xdf, 0xd4, 0x07, 0x10, 0xb3, 0x94, 0xe5, 0x1b, 0x60, 0x1e,
+	0xcb, 0x19, 0x46, 0xb6, 0x91, 0x52, 0x1c, 0x5c, 0xbf, 0xec, 0x1e, 0x1e, 0x61, 0x75, 0x8a, 0x5a,
+	0x80, 0x5c, 0x7a, 0x4c, 0x46, 0xbe, 0x68, 0xc7, 0xb5, 0xe5, 0x90, 0x31, 0x5f, 0xf5, 0x8c, 0x32,
+	0xce, 0xb8, 0x41, 0x75, 0x00, 0x3e, 0xea, 0x05, 0x54, 0x1c, 0x79, 0x7f, 0xa4, 0xaa, 0x31, 0xac,
+	0xe0, 0xd4, 0x49, 0x6d, 0x0c, 0x1b, 0x57, 0x99, 0x9a, 0x51, 0x09, 0x1e, 0xa5, 0x2b, 0x41, 0x65,
+	0xfb, 0xf3, 0x2c, 0xeb, 0xb2, 0x45, 0xa6, 0xaa, 0x46, 0x66, 0x92, 0xfc, 0xd5, 0x80, 0xc2, 0x11,
+	0x75, 0x22, 0x2a, 0x3e, 0x6a, 0x8e, 0xec, 0x9c, 0xcb, 0x91, 0x7a, 0xf6, 0xd8, 0x2d, 0x5f, 0x5d,
+	0x48, 0x91, 0x1a, 0x94, 0xbc, 0x40, 0xd0, 0x28, 0x20, 0xbe, 0xca, 0x91, 0x12, 0x9e, 0xed, 0xb3,
+	0xb3, 0xdc, 0x80, 0x42, 0x3c, 0x97, 0xde, 0xb5, 0x01, 0xf1, 0xab, 0x17, 0x0d, 0xc8, 0x54, 0xf2,
+	0xdf, 0x06, 0x94, 0x92, 0xf6, 0xf8, 0x51, 0xd5, 0xbc, 0x30, 0xe7, 0xe5, 0xff, 0xe7, 0x39, 0x0f,
+	0x81, 0x39, 0xf0, 0x02, 0x3d, 0x91, 0x62, 0xb5, 0x46, 0x2d, 0x28, 0x86, 0x64, 0xe2, 0x33, 0xe2,
+	0xea, 0xb2, 0xbc, 0xb6, 0xf0, 0x9b, 0x48, 0x3b, 0x98, 0xe0, 0x04, 0xb4, 0xbb, 0x76, 0x72, 0xda,
+	0x5c, 0x85, 0x6a, 0xda, 0xf2, 0xd7, 0x46, 0xf3, 0x1f, 0x06, 0x94, 0x0f, 0xfe, 0x20, 0x68, 0xa0,
+	0xa6, 0x8f, 0xff, 0x4b, 0xe3, 0x37, 0x17, 0x7f, 0x37, 0x29, 0x9f, 0xfb, 0x49, 0x24, 0xeb, 0xa3,
+	0x76, 0xac, 0xf7, 0x1f, 0xea, 0xf7, 0xfe, 0xf9, 0xa1, 0x7e, 0xef, 0xed, 0xb4, 0x6e, 0xbc, 0x9f,
+	0xd6, 0x8d, 0xbf, 0x4f, 0xeb, 0xc6, 0xbf, 0xa6, 0x75, 0xa3, 0x57, 0x50, 0xfe, 0xf9, 0xd1, 0x7f,
+	0x03, 0x00, 0x00, 0xff, 0xff, 0xbc, 0x6b, 0x9b, 0xd8, 0xfe, 0x13, 0x00, 0x00,
 }

vendor/github.com/docker/swarmkit/api/objects.proto

@@ -342,6 +342,15 @@ message Cluster {
 	// reject joining the cluster.  Nodes that report themselves to be non-FIPS
 	// should be rejected from the cluster.
 	bool fips = 10 [(gogoproto.customname) = "FIPS"];
+
+	// This field specifies default subnet pools for global scope networks. If
+	// unspecified, Docker will use the predefined subnets as it works on older releases.
+	// Format Example : {"20.20.0.0/16",""20.20.0.0/16"}
+	repeated string defaultAddressPool = 11;
+
+	// This flag specifies the default subnet size of global scope networks by giving
+	// the length of the subnet masks for every such network
+	uint32 subnetSize = 12;
 }
 
 // Secret represents a secret that should be passed to a container or a node,

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

@@ -1,6 +1,7 @@
 package allocator
 
 import (
+	"net"
 	"sync"
 
 	"github.com/docker/docker/pkg/plugingetter"
@@ -32,6 +33,13 @@ type Allocator struct {
 
 	// pluginGetter provides access to docker's plugin inventory.
 	pluginGetter plugingetter.PluginGetter
+
+	// DefaultAddrPool specifies default subnet pool for global scope networks
+	defaultAddrPool []*net.IPNet
+
+	// SubnetSize specifies the subnet size of the networks created from
+	// the default subnet pool
+	subnetSize int
 }
 
 // taskBallot controls how the voting for task allocation is
@@ -65,15 +73,17 @@ type allocActor struct {
 
 // New returns a new instance of Allocator for use during allocation
 // stage of the manager.
-func New(store *store.MemoryStore, pg plugingetter.PluginGetter) (*Allocator, error) {
+func New(store *store.MemoryStore, pg plugingetter.PluginGetter, defaultAddrPool []*net.IPNet, subnetSize int) (*Allocator, error) {
 	a := &Allocator{
 		store: store,
 		taskBallot: &taskBallot{
 			votes: make(map[string][]string),
 		},
-		stopChan:     make(chan struct{}),
-		doneChan:     make(chan struct{}),
-		pluginGetter: pg,
+		stopChan:        make(chan struct{}),
+		doneChan:        make(chan struct{}),
+		pluginGetter:    pg,
+		defaultAddrPool: defaultAddrPool,
+		subnetSize:      subnetSize,
 	}
 
 	return a, nil

vendor/github.com/docker/swarmkit/manager/allocator/cnmallocator/drivers_ipam.go

@@ -1,14 +1,45 @@
 package cnmallocator
 
 import (
+	"net"
+	"strconv"
+	"strings"
+
 	"github.com/docker/libnetwork/drvregistry"
 	"github.com/docker/libnetwork/ipamapi"
 	builtinIpam "github.com/docker/libnetwork/ipams/builtin"
 	nullIpam "github.com/docker/libnetwork/ipams/null"
 	remoteIpam "github.com/docker/libnetwork/ipams/remote"
+	"github.com/docker/libnetwork/ipamutils"
+	"github.com/sirupsen/logrus"
 )
 
-func initIPAMDrivers(r *drvregistry.DrvRegistry) error {
+func initIPAMDrivers(r *drvregistry.DrvRegistry, defaultAddrPool []*net.IPNet, subnetSize int) error {
+	var addressPool []*ipamutils.NetworkToSplit
+	var str strings.Builder
+	str.WriteString("Subnetlist - ")
+	// Extract defaultAddrPool param info and construct ipamutils.NetworkToSplit
+	// from the info. We will be using it to call Libnetwork API
+	// We also need to log new address pool info whenever swarm init
+	// happens with default address pool option
+	if defaultAddrPool != nil {
+		for _, p := range defaultAddrPool {
+			addressPool = append(addressPool, &ipamutils.NetworkToSplit{
+				Base: p.String(),
+				Size: subnetSize,
+			})
+			str.WriteString(p.String() + ",")
+		}
+		str.WriteString(": Size ")
+		str.WriteString(strconv.Itoa(subnetSize))
+	}
+	if err := ipamutils.ConfigGlobalScopeDefaultNetworks(addressPool); err != nil {
+		return err
+	}
+	if addressPool != nil {
+		logrus.Infof("Swarm initialized global default address pool to: " + str.String())
+	}
+
 	for _, fn := range [](func(ipamapi.Callback, interface{}, interface{}) error){
 		builtinIpam.Init,
 		remoteIpam.Init,

vendor/github.com/docker/swarmkit/manager/allocator/cnmallocator/networkallocator.go

@@ -87,7 +87,7 @@ type initializer struct {
 }
 
 // New returns a new NetworkAllocator handle
-func New(pg plugingetter.PluginGetter) (networkallocator.NetworkAllocator, error) {
+func New(pg plugingetter.PluginGetter, defaultAddrPool []*net.IPNet, subnetSize int) (networkallocator.NetworkAllocator, error) {
 	na := &cnmNetworkAllocator{
 		networks: make(map[string]*network),
 		services: make(map[string]struct{}),
@@ -106,7 +106,7 @@ func New(pg plugingetter.PluginGetter) (networkallocator.NetworkAllocator, error
 		return nil, err
 	}
 
-	if err = initIPAMDrivers(reg); err != nil {
+	if err = initIPAMDrivers(reg, defaultAddrPool, subnetSize); err != nil {
 		return nil, err
 	}
 

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

@@ -68,7 +68,7 @@ type networkContext struct {
 }
 
 func (a *Allocator) doNetworkInit(ctx context.Context) (err error) {
-	na, err := cnmallocator.New(a.pluginGetter)
+	na, err := cnmallocator.New(a.pluginGetter, a.defaultAddrPool, a.subnetSize)
 	if err != nil {
 		return err
 	}
@@ -181,10 +181,6 @@ func (a *Allocator) doNetworkAlloc(ctx context.Context, ev events.Event) {
 		if IsIngressNetwork(n) {
 			nc.ingressNetwork = n
 		}
-		err := a.allocateNodes(ctx, false)
-		if err != nil {
-			log.G(ctx).WithError(err).Error(err)
-		}
 	case api.EventDeleteNetwork:
 		n := v.Network.Copy()
 
@@ -337,19 +333,12 @@ func (a *Allocator) doNodeAlloc(ctx context.Context, ev events.Event) {
 			nc.somethingWasDeallocated = true
 		}
 	} else {
-		allocatedNetworks, err := a.getAllocatedNetworks()
-		if err != nil {
-			log.G(ctx).WithError(err).Errorf("Error listing allocated networks in network %s", node.ID)
-		}
-
-		isAllocated := a.allocateNode(ctx, node, false, allocatedNetworks)
-
-		if isAllocated {
-			if err := a.store.Batch(func(batch *store.Batch) error {
-				return a.commitAllocatedNode(ctx, batch, node)
-			}); err != nil {
-				log.G(ctx).WithError(err).Errorf("Failed to commit allocation of network resources for node %s", node.ID)
-			}
+		// if this isn't a delete, we should try reallocating the node. if this
+		// is a creation, then the node will be allocated only for ingress.
+		if err := a.reallocateNode(ctx, node.ID); err != nil {
+			log.G(ctx).WithError(err).Errorf(
+				"error reallocating network resources for node %v", node.ID,
+			)
 		}
 	}
 }
@@ -394,6 +383,69 @@ func (a *Allocator) getAllocatedNetworks() ([]*api.Network, error) {
 	return allocatedNetworks, nil
 }
 
+// getNodeNetworks returns all networks that should be allocated for a node
+func (a *Allocator) getNodeNetworks(nodeID string) ([]*api.Network, error) {
+	var (
+		// no need to initialize networks. we only append to it, and appending
+		// to a nil slice is valid. this has the added bonus of making this nil
+		// if we return an error
+		networks []*api.Network
+		err      error
+	)
+	a.store.View(func(tx store.ReadTx) {
+		// get all tasks currently assigned to this node. it's no big deal if
+		// the tasks change in the meantime, there's no race to clean up
+		// unneeded network attachments on a node.
+		var tasks []*api.Task
+		tasks, err = store.FindTasks(tx, store.ByNodeID(nodeID))
+		if err != nil {
+			return
+		}
+		// we need to keep track of network IDs that we've already added to the
+		// list of networks we're going to return. we could do
+		// map[string]*api.Network and then convert to []*api.Network and
+		// return that, but it seems cleaner to have a separate set and list.
+		networkIDs := map[string]struct{}{}
+		for _, task := range tasks {
+			// we don't need to check if a task is before the Assigned state.
+			// the only way we have a task with a NodeID that isn't yet in
+			// Assigned is if it's a global service task. this check is not
+			// necessary:
+			// if task.Status.State < api.TaskStateAssigned {
+			//     continue
+			// }
+			if task.Status.State > api.TaskStateRunning {
+				// we don't need to have network attachments for a task that's
+				// already in a terminal state
+				continue
+			}
+
+			// now go through the task's network attachments and find all of
+			// the networks
+			for _, attachment := range task.Networks {
+				// if the network is an overlay network, and the network ID is
+				// not yet in the set of network IDs, then add it to the set
+				// and add the network to the list of networks we'll be
+				// returning
+				if _, ok := networkIDs[attachment.Network.ID]; isOverlayNetwork(attachment.Network) && !ok {
+					networkIDs[attachment.Network.ID] = struct{}{}
+					// we don't need to worry about retrieving the network from
+					// the store, because the network in the attachment is an
+					// identical copy of the network in the store.
+					networks = append(networks, attachment.Network)
+				}
+			}
+		}
+	})
+
+	// finally, we need the ingress network if one exists.
+	if a.netCtx != nil && a.netCtx.ingressNetwork != nil {
+		networks = append(networks, a.netCtx.ingressNetwork)
+	}
+
+	return networks, err
+}
+
 func (a *Allocator) allocateNodes(ctx context.Context, existingAddressesOnly bool) error {
 	// Allocate nodes in the store so far before we process watched events.
 	var (
@@ -409,13 +461,12 @@ func (a *Allocator) allocateNodes(ctx context.Context, existingAddressesOnly boo
 		return errors.Wrap(err, "error listing all nodes in store while trying to allocate network resources")
 	}
 
-	allocatedNetworks, err := a.getAllocatedNetworks()
-	if err != nil {
-		return errors.Wrap(err, "error listing all nodes in store while trying to allocate network resources")
-	}
-
 	for _, node := range nodes {
-		isAllocated := a.allocateNode(ctx, node, existingAddressesOnly, allocatedNetworks)
+		networks, err := a.getNodeNetworks(node.ID)
+		if err != nil {
+			return errors.Wrap(err, "error getting all networks needed by node")
+		}
+		isAllocated := a.allocateNode(ctx, node, existingAddressesOnly, networks)
 		if isAllocated {
 			allocatedNodes = append(allocatedNodes, node)
 		}
@@ -842,6 +893,14 @@ func (a *Allocator) doTaskAlloc(ctx context.Context, ev events.Event) {
 			}
 		}
 
+		// if we're deallocating the task, we also might need to deallocate the
+		// node's network attachment, if this is the last task on the node that
+		// needs it. we can do that by doing the same dance to reallocate a
+		// node
+		if err := a.reallocateNode(ctx, t.NodeID); err != nil {
+			logger.WithError(err).Errorf("error reallocating node %v", t.NodeID)
+		}
+
 		// Cleanup any task references that might exist
 		delete(nc.pendingTasks, t.ID)
 		delete(nc.unallocatedTasks, t.ID)
@@ -849,6 +908,16 @@ func (a *Allocator) doTaskAlloc(ctx context.Context, ev events.Event) {
 		return
 	}
 
+	// if the task has a node ID, we should allocate an attachment for the node
+	// this happens if the task is in any non-terminal state.
+	if t.NodeID != "" && t.Status.State <= api.TaskStateRunning {
+		if err := a.reallocateNode(ctx, t.NodeID); err != nil {
+			// TODO(dperny): not entire sure what the error handling flow here
+			// should be... for now, just log and keep going
+			logger.WithError(err).Errorf("error reallocating node %v", t.NodeID)
+		}
+	}
+
 	// If we are already in allocated state, there is
 	// absolutely nothing else to do.
 	if t.Status.State >= api.TaskStatePending {
@@ -887,13 +956,25 @@ func (a *Allocator) doTaskAlloc(ctx context.Context, ev events.Event) {
 	log.G(ctx).Debugf("task %v was marked pending allocation", t.ID)
 }
 
+// allocateNode takes a context, a node, whether or not new allocations should
+// be made, and the networks to allocate. it then makes sure an attachment is
+// allocated for every network in the provided networks, allocating new
+// attachments if existingAddressesOnly is false. it return true if something
+// new was allocated or something was removed, or false otherwise.
+//
+// additionally, allocateNode will remove and free any attachments for networks
+// not in the set of networks passed in.
 func (a *Allocator) allocateNode(ctx context.Context, node *api.Node, existingAddressesOnly bool, networks []*api.Network) bool {
 	var allocated bool
 
 	nc := a.netCtx
 
+	// go through all of the networks we've passed in
 	for _, network := range networks {
 
+		// for each one, create space for an attachment. then, search through
+		// all of the attachments already on the node. if the attachment
+		// exists, then copy it to the node. if not, we'll allocate it below.
 		var lbAttachment *api.NetworkAttachment
 		for _, na := range node.Attachments {
 			if na.Network != nil && na.Network.ID == network.ID {
@@ -927,8 +1008,83 @@ func (a *Allocator) allocateNode(ctx context.Context, node *api.Node, existingAd
 
 		allocated = true
 	}
-	return allocated
 
+	// if we're only initializing existing addresses, we should stop here and
+	// not deallocate anything
+	if existingAddressesOnly {
+		return allocated
+	}
+
+	// now that we've allocated everything new, we have to remove things that
+	// do not belong. we have to do this last because we can easily roll back
+	// attachments we've allocated if something goes wrong by freeing them, but
+	// we can't roll back deallocating attachments by reacquiring them.
+
+	// we're using a trick to filter without allocating see the official go
+	// wiki on github:
+	// https://github.com/golang/go/wiki/SliceTricks#filtering-without-allocating
+	attachments := node.Attachments[:0]
+	for _, attach := range node.Attachments {
+		// for every attachment, go through every network. if the attachment
+		// belongs to one of the networks, then go to the next attachment. if
+		// no network matches, then the the attachment should be removed.
+		attachmentBelongs := false
+		for _, network := range networks {
+			if network.ID == attach.Network.ID {
+				attachmentBelongs = true
+				break
+			}
+		}
+		if attachmentBelongs {
+			attachments = append(attachments, attach)
+		} else {
+			// free the attachment and remove it from the node's attachments by
+			// re-slicing
+			if err := a.netCtx.nwkAllocator.DeallocateAttachment(node, attach); err != nil {
+				// if deallocation fails, there's nothing we can do besides log
+				// an error and keep going
+				log.G(ctx).WithError(err).Errorf(
+					"error deallocating attachment for network %v on node %v",
+					attach.Network.ID, node.ID,
+				)
+			}
+			// strictly speaking, nothing was allocated, but something was
+			// deallocated and that counts.
+			allocated = true
+			// also, set the somethingWasDeallocated flag so the allocator
+			// knows that it can now try again.
+			a.netCtx.somethingWasDeallocated = true
+		}
+	}
+	node.Attachments = attachments
+
+	return allocated
+}
+
+func (a *Allocator) reallocateNode(ctx context.Context, nodeID string) error {
+	var (
+		node *api.Node
+	)
+	a.store.View(func(tx store.ReadTx) {
+		node = store.GetNode(tx, nodeID)
+	})
+	if node == nil {
+		return errors.Errorf("node %v cannot be found", nodeID)
+	}
+
+	networks, err := a.getNodeNetworks(node.ID)
+	if err != nil {
+		return errors.Wrapf(err, "error getting networks for node %v", nodeID)
+	}
+	if a.allocateNode(ctx, node, false, networks) {
+		// if something was allocated, commit the node
+		if err := a.store.Batch(func(batch *store.Batch) error {
+			return a.commitAllocatedNode(ctx, batch, node)
+		}); err != nil {
+			return errors.Wrapf(err, "error committing allocation for node %v", nodeID)
+		}
+	}
+	return nil
 }
 
 func (a *Allocator) commitAllocatedNode(ctx context.Context, batch *store.Batch, node *api.Node) error {

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

@@ -265,6 +265,8 @@ func redactClusters(clusters []*api.Cluster) []*api.Cluster {
 			Spec:                    *redactedSpec,
 			RootCA:                  *redactedRootCA,
 			BlacklistedCertificates: cluster.BlacklistedCertificates,
+			DefaultAddressPool:      cluster.DefaultAddressPool,
+			SubnetSize:              cluster.SubnetSize,
 		}
 		redactedClusters = append(redactedClusters, newCluster)
 	}

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

@@ -141,6 +141,12 @@ func (s *Server) ListNodes(ctx context.Context, request *api.ListNodesRequest) (
 				}
 				return filterMatchLabels(e.Description.Engine.Labels, request.Filters.Labels)
 			},
+			func(e *api.Node) bool {
+				if len(request.Filters.NodeLabels) == 0 {
+					return true
+				}
+				return filterMatchLabels(e.Spec.Annotations.Labels, request.Filters.NodeLabels)
+			},
 			func(e *api.Node) bool {
 				if len(request.Filters.Roles) == 0 {
 					return true

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

@@ -126,6 +126,13 @@ type Config struct {
 	// first node in the cluster, this setting is used to set the cluster-wide mandatory
 	// FIPS setting.
 	FIPS bool
+
+	// DefaultAddrPool specifies default subnet pool for global scope networks
+	DefaultAddrPool []*net.IPNet
+
+	// SubnetSize specifies the subnet size of the networks created from
+	// the default subnet pool
+	SubnetSize int
 }
 
 // Manager is the cluster manager for Swarm.
@@ -924,20 +931,33 @@ func (m *Manager) becomeLeader(ctx context.Context) {
 			Key:       m.config.UnlockKey,
 		}}
 	}
-
 	s.Update(func(tx store.Tx) error {
 		// Add a default cluster object to the
 		// store. Don't check the error because
 		// we expect this to fail unless this
 		// is a brand new cluster.
-		err := store.CreateCluster(tx, defaultClusterObject(
+		clusterObj := defaultClusterObject(
 			clusterID,
 			initialCAConfig,
 			raftCfg,
 			api.EncryptionConfig{AutoLockManagers: m.config.AutoLockManagers},
 			unlockKeys,
 			rootCA,
-			m.config.FIPS))
+			m.config.FIPS,
+			nil,
+			0)
+
+		var defaultAddrPool []string
+		for _, p := range m.config.DefaultAddrPool {
+			defaultAddrPool = append(defaultAddrPool, p.String())
+		}
+		// If defaultAddrPool is valid we update cluster object with new value
+		if defaultAddrPool != nil {
+			clusterObj.DefaultAddressPool = defaultAddrPool
+			clusterObj.SubnetSize = uint32(m.config.SubnetSize)
+		}
+
+		err := store.CreateCluster(tx, clusterObj)
 
 		if err != nil && err != store.ErrExist {
 			log.G(ctx).WithError(err).Errorf("error creating cluster object")
@@ -981,7 +1001,26 @@ func (m *Manager) becomeLeader(ctx context.Context) {
 	// shutdown underlying manager processes when leadership is
 	// lost.
 
-	m.allocator, err = allocator.New(s, m.config.PluginGetter)
+	// If DefaultAddrPool is null, Read from store and check if
+	// DefaultAddrPool info is stored in cluster object
+	if m.config.DefaultAddrPool == nil {
+		var cluster *api.Cluster
+		s.View(func(tx store.ReadTx) {
+			cluster = store.GetCluster(tx, clusterID)
+		})
+		if cluster.DefaultAddressPool != nil {
+			for _, address := range cluster.DefaultAddressPool {
+				_, b, err := net.ParseCIDR(address)
+				if err != nil {
+					log.G(ctx).WithError(err).Error("Default Address Pool reading failed for cluster object  %s", address)
+				}
+				m.config.DefaultAddrPool = append(m.config.DefaultAddrPool, b)
+			}
+		}
+		m.config.SubnetSize = int(cluster.SubnetSize)
+	}
+
+	m.allocator, err = allocator.New(s, m.config.PluginGetter, m.config.DefaultAddrPool, m.config.SubnetSize)
 	if err != nil {
 		log.G(ctx).WithError(err).Error("failed to create allocator")
 		// TODO(stevvooe): It doesn't seem correct here to fail
@@ -1103,7 +1142,9 @@ func defaultClusterObject(
 	encryptionConfig api.EncryptionConfig,
 	initialUnlockKeys []*api.EncryptionKey,
 	rootCA *ca.RootCA,
-	fips bool) *api.Cluster {
+	fips bool,
+	defaultAddressPool []string,
+	subnetSize int) *api.Cluster {
 	var caKey []byte
 	if rcaSigner, err := rootCA.Signer(); err == nil {
 		caKey = rcaSigner.Key
@@ -1134,8 +1175,10 @@ func defaultClusterObject(
 				Manager: ca.GenerateJoinToken(rootCA, fips),
 			},
 		},
-		UnlockKeys: initialUnlockKeys,
-		FIPS:       fips,
+		UnlockKeys:         initialUnlockKeys,
+		FIPS:               fips,
+		DefaultAddressPool: defaultAddressPool,
+		SubnetSize:         uint32(subnetSize),
 	}
 }
 

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

@@ -105,6 +105,13 @@ type Config struct {
 	// for connections to the remote API (including the raft service).
 	AdvertiseRemoteAPI string
 
+	// DefaultAddrPool specifies default subnet pool for global scope networks
+	DefaultAddrPool []*net.IPNet
+
+	// SubnetSize specifies the subnet size of the networks created from
+	// the default subnet pool
+	SubnetSize int
+
 	// Executor specifies the executor to use for the agent.
 	Executor exec.Executor
 
@@ -995,6 +1002,8 @@ func (n *Node) runManager(ctx context.Context, securityConfig *ca.SecurityConfig
 		PluginGetter:     n.config.PluginGetter,
 		RootCAPaths:      rootPaths,
 		FIPS:             n.config.FIPS,
+		DefaultAddrPool:  n.config.DefaultAddrPool,
+		SubnetSize:       n.config.SubnetSize,
 	})
 	if err != nil {
 		return false, err

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

@@ -33,7 +33,7 @@ github.com/docker/go-connections 7beb39f0b969b075d1325fecb092faf27fd357b6
 github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
 github.com/docker/go-units 9e638d38cf6977a37a8ea0078f3ee75a7cdb2dd1
 github.com/docker/libkv 1d8431073ae03cdaedb198a89722f3aab6d418ef
-github.com/docker/libnetwork d00ceed44cc447c77f25cdf5d59e83163bdcb4c9
+github.com/docker/libnetwork a79d3687931697244b8e03485bf7b2042f8ec6b6
 github.com/opencontainers/runc ad0f5255060d36872be04de22f8731f38ef2d7b1
 github.com/opencontainers/go-digest v1.0.0-rc1
 github.com/opencontainers/image-spec v1.0.1