add advertise grpc address option

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

README.md

@@ -5,5 +5,3 @@ auto-elects in the event of a current master failure.  Non-node peers are also s
 can only access the network but do not provide routing capabilities.
 
 ![Heimdall](docs/overview.png)
-
-#

api/v1/heimdall.pb.go

@@ -32,6 +32,7 @@ type Master struct {
 	ID                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	GRPCAddress          string   `protobuf:"bytes,2,opt,name=grpc_address,json=grpcAddress,proto3" json:"grpc_address,omitempty"`
 	RedisURL             string   `protobuf:"bytes,3,opt,name=redis_url,json=redisUrl,proto3" json:"redis_url,omitempty"`
+	Peers                []*Peer  `protobuf:"bytes,5,rep,name=peers,proto3" json:"peers,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -82,9 +83,20 @@ func (m *Master) GetRedisURL() string {
 	return ""
 }
 
+func (m *Master) GetPeers() []*Peer {
+	if m != nil {
+		return m.Peers
+	}
+	return nil
+}
+
 type JoinRequest struct {
 	ID                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	ClusterKey           string   `protobuf:"bytes,2,opt,name=cluster_key,json=clusterKey,proto3" json:"cluster_key,omitempty"`
+	GRPCAddress          string   `protobuf:"bytes,3,opt,name=grpc_address,json=grpcAddress,proto3" json:"grpc_address,omitempty"`
+	EndpointIP           string   `protobuf:"bytes,4,opt,name=endpoint_ip,json=endpointIp,proto3" json:"endpoint_ip,omitempty"`
+	EndpointPort         uint64   `protobuf:"varint,5,opt,name=endpoint_port,json=endpointPort,proto3" json:"endpoint_port,omitempty"`
+	InterfaceName        string   `protobuf:"bytes,6,opt,name=interface_name,json=interfaceName,proto3" json:"interface_name,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -128,8 +140,38 @@ func (m *JoinRequest) GetClusterKey() string {
 	return ""
 }
 
+func (m *JoinRequest) GetGRPCAddress() string {
+	if m != nil {
+		return m.GRPCAddress
+	}
+	return ""
+}
+
+func (m *JoinRequest) GetEndpointIP() string {
+	if m != nil {
+		return m.EndpointIP
+	}
+	return ""
+}
+
+func (m *JoinRequest) GetEndpointPort() uint64 {
+	if m != nil {
+		return m.EndpointPort
+	}
+	return 0
+}
+
+func (m *JoinRequest) GetInterfaceName() string {
+	if m != nil {
+		return m.InterfaceName
+	}
+	return ""
+}
+
 type JoinResponse struct {
 	Master               *Master  `protobuf:"bytes,1,opt,name=master,proto3" json:"master,omitempty"`
+	Node                 *Node    `protobuf:"bytes,2,opt,name=node,proto3" json:"node,omitempty"`
+	Peers                []*Peer  `protobuf:"bytes,3,rep,name=peers,proto3" json:"peers,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -166,6 +208,20 @@ func (m *JoinResponse) GetMaster() *Master {
 	return nil
 }
 
+func (m *JoinResponse) GetNode() *Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+func (m *JoinResponse) GetPeers() []*Peer {
+	if m != nil {
+		return m.Peers
+	}
+	return nil
+}
+
 type ConnectRequest struct {
 	ID                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
@@ -464,6 +520,7 @@ type Node struct {
 	EndpointPort         uint64    `protobuf:"varint,5,opt,name=endpoint_port,json=endpointPort,proto3" json:"endpoint_port,omitempty"`
 	GatewayIP            string    `protobuf:"bytes,6,opt,name=gateway_ip,json=gatewayIp,proto3" json:"gateway_ip,omitempty"`
 	Updated              time.Time `protobuf:"bytes,7,opt,name=updated,proto3,stdtime" json:"updated"`
+	InterfaceName        string    `protobuf:"bytes,8,opt,name=interface_name,json=interfaceName,proto3" json:"interface_name,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
 	XXX_unrecognized     []byte    `json:"-"`
 	XXX_sizecache        int32     `json:"-"`
@@ -542,6 +599,13 @@ func (m *Node) GetUpdated() time.Time {
 	return time.Time{}
 }
 
+func (m *Node) GetInterfaceName() string {
+	if m != nil {
+		return m.InterfaceName
+	}
+	return ""
+}
+
 type NodesRequest struct {
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
@@ -967,71 +1031,75 @@ func init() {
 }
 
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+	0x12, 0xa9, 0x5d, 0xb5, 0x44, 0xd6, 0x61, 0x4d, 0x30, 0x9e, 0xf5, 0xc0, 0x21, 0x34, 0xd5, 0x59,
-	0x0c, 0xcd, 0x4d, 0xcd, 0x67, 0x43, 0xae, 0xbd, 0xce, 0x90, 0x5b, 0x4f, 0xa1, 0x8c, 0xe9, 0x9c,
+	0x29, 0xff, 0x08, 0xca, 0x62, 0xb8, 0x13, 0xed, 0x6f, 0xb0, 0x12, 0x12, 0x94, 0x78, 0x5f, 0x4a,
-	0x13, 0xf4, 0x00, 0xaa, 0x82, 0xb2, 0x51, 0xc6, 0x12, 0xac, 0x96, 0x66, 0x45, 0x70, 0xe9, 0x0e,
+	0xa2, 0x95, 0x56, 0x4a, 0xba, 0x20, 0x5f, 0xe1, 0xf5, 0xc9, 0xe7, 0xf8, 0x7e, 0x78, 0x8e, 0xee,
-	0x70, 0x45, 0x5c, 0xb9, 0xbe, 0xd8, 0x35, 0x33, 0xc2, 0x2f, 0x69, 0x74, 0x9e, 0xee, 0x1a, 0x75,
+	0xc0, 0x63, 0xc9, 0x8c, 0x2a, 0xf9, 0xf6, 0x12, 0xb3, 0xdd, 0x8f, 0x29, 0x28, 0x17, 0x9b, 0xc5,
-	0xb4, 0x5e, 0x00, 0x3a, 0x8c, 0x88, 0xc7, 0x89, 0x8c, 0x96, 0x4e, 0xf7, 0x7f, 0x0c, 0x6a, 0x03,
+	0xa4, 0x05, 0xb5, 0x54, 0xa9, 0x44, 0x6c, 0x9a, 0x9d, 0x05, 0x41, 0x4b, 0x43, 0x72, 0x08, 0xcd,
-	0x1a, 0x90, 0x90, 0x5c, 0x09, 0xba, 0xe6, 0xaf, 0x6d, 0xfa, 0xb7, 0xa0, 0x29, 0x3d, 0x33, 0xb6,
+	0xe5, 0xd1, 0xc8, 0x76, 0x81, 0x76, 0xab, 0xad, 0xf7, 0x25, 0x94, 0x69, 0x38, 0xe1, 0x48, 0xee,
-	0x30, 0xec, 0xa4, 0x06, 0x45, 0xd7, 0x17, 0x50, 0x89, 0xa4, 0x45, 0xf1, 0xd5, 0xc9, 0xc1, 0x57,
+	0x41, 0x55, 0x50, 0x36, 0xc8, 0x58, 0x82, 0xf9, 0xcc, 0xa8, 0x08, 0x2e, 0xed, 0x1e, 0xad, 0x88,
-	0x92, 0x5d, 0xe1, 0x7a, 0xbf, 0xd5, 0xa0, 0xf6, 0xa5, 0xf2, 0x40, 0x0c, 0xaa, 0x6a, 0xc5, 0xa3,
+	0x2b, 0xdb, 0x15, 0x2b, 0x29, 0x40, 0x7e, 0x1e, 0x46, 0xa7, 0xe9, 0x4a, 0x52, 0xc7, 0xf6, 0x53,
-	0x6e, 0x8e, 0x48, 0x9b, 0x6f, 0x8e, 0x76, 0xef, 0x2e, 0x10, 0xf5, 0x00, 0xdf, 0x43, 0x73, 0x63,
+	0x20, 0xfb, 0x11, 0x3a, 0x1c, 0x65, 0xb4, 0x74, 0x09, 0xbc, 0x62, 0x50, 0x13, 0x48, 0x0f, 0x7d,
-	0xf5, 0xa2, 0x8f, 0x72, 0x04, 0xb9, 0x69, 0x59, 0xb7, 0x77, 0xaf, 0x8d, 0xea, 0x13, 0xf1, 0x91,
+	0xbc, 0x10, 0x74, 0xc1, 0x5f, 0x5b, 0xf6, 0xdf, 0x80, 0xa6, 0xf4, 0xcc, 0xd8, 0xa2, 0xb0, 0x9e,
-	0x80, 0x7c, 0x68, 0x5d, 0x59, 0xd6, 0xe8, 0x93, 0x1c, 0x39, 0x6e, 0x5e, 0xf0, 0x5b, 0xb3, 0xfc,
+	0x1a, 0x14, 0x5d, 0x5f, 0x40, 0x25, 0x92, 0x16, 0xc5, 0x57, 0x27, 0x07, 0x5f, 0x49, 0x76, 0x85,
-	0xa2, 0x41, 0xeb, 0xca, 0x1e, 0xcf, 0x95, 0xe6, 0xe6, 0xb7, 0x42, 0xfb, 0xd3, 0xd7, 0x81, 0x2a,
+	0xdb, 0xfd, 0xad, 0x06, 0xb5, 0xaf, 0x94, 0x07, 0x61, 0x50, 0x55, 0x2f, 0x01, 0xd9, 0xc9, 0x11,
-	0x4a, 0x27, 0x50, 0x12, 0x5f, 0x09, 0xc8, 0xce, 0x11, 0x63, 0xed, 0xb3, 0xa4, 0xed, 0xe4, 0xf6,
+	0x69, 0xf9, 0x81, 0x69, 0xed, 0xde, 0x04, 0xa2, 0x0a, 0xf8, 0x11, 0x9a, 0x4b, 0x1b, 0x9a, 0x7c,
-	0x57, 0x89, 0xa6, 0x50, 0x49, 0xe4, 0x88, 0xf6, 0xf3, 0xca, 0x2e, 0x7b, 0xc0, 0xee, 0x1d, 0x10,
+	0x9c, 0x23, 0xc8, 0x55, 0x3b, 0xbd, 0xb5, 0x79, 0x69, 0xa2, 0x1f, 0x8b, 0x4f, 0x37, 0xe2, 0xc2,
-	0x2a, 0xdd, 0x2b, 0xd0, 0xd7, 0x66, 0x12, 0x7d, 0x98, 0x47, 0x6d, 0xd7, 0x66, 0x78, 0x6b, 0x03,
+	0xc6, 0x85, 0x9d, 0x4e, 0x3e, 0xcd, 0x91, 0xe3, 0xea, 0x77, 0x60, 0x65, 0x96, 0x5f, 0x34, 0xd8,
-	0x5f, 0x81, 0xbe, 0x36, 0x9c, 0xb9, 0xa2, 0x5f, 0x1f, 0xe6, 0xad, 0xd1, 0xcf, 0xa0, 0x2c, 0x5f,
+	0xb8, 0xb0, 0xee, 0x73, 0xa5, 0xb9, 0xfa, 0xf1, 0x68, 0x7d, 0x76, 0x1b, 0xa8, 0xa2, 0x74, 0x04,
-	0x04, 0xc8, 0xc9, 0xb9, 0xf1, 0x33, 0xa2, 0xf6, 0xf3, 0x03, 0x14, 0x4f, 0x67, 0x50, 0x4e, 0xf4,
+	0x25, 0xf1, 0x21, 0x43, 0xcc, 0x1c, 0x31, 0x16, 0xbe, 0xf5, 0x5a, 0x56, 0x6e, 0x7f, 0x95, 0x68,
-	0xe7, 0xe4, 0x5c, 0x9e, 0x77, 0xca, 0xb5, 0xa1, 0xb5, 0xbe, 0xfd, 0xdd, 0xa3, 0xdc, 0xff, 0x06,
+	0x0c, 0x95, 0xa4, 0x1d, 0xc9, 0x76, 0xde, 0xb6, 0xcb, 0x0a, 0xdc, 0xb9, 0x01, 0x42, 0xa5, 0x7b,
-	0x3e, 0xbb, 0xe8, 0x9e, 0x54, 0x24, 0x2f, 0xef, 0xff, 0x13, 0x00, 0x00, 0xff, 0xff, 0xcd, 0x85,
+	0x0e, 0x8d, 0x85, 0x99, 0x24, 0x1f, 0xe5, 0xe9, 0xb6, 0x4b, 0x33, 0xbc, 0x52, 0xc0, 0xe7, 0xd0,
-	0x12, 0x11, 0x44, 0x0c, 0x00, 0x00,
+	0x58, 0x18, 0xce, 0x5c, 0xd1, 0x2f, 0x0f, 0xf3, 0xca, 0xe8, 0x27, 0x50, 0x96, 0x0f, 0x01, 0xb1,
+	0x72, 0x6e, 0xfc, 0x8c, 0xa8, 0xed, 0xfc, 0x00, 0xc5, 0xd3, 0x09, 0x94, 0x93, 0xfe, 0xb3, 0x72,
+	0x2e, 0xcf, 0x1b, 0xe5, 0x5a, 0xea, 0xb5, 0xae, 0xf9, 0xc3, 0x83, 0xdc, 0xff, 0xa3, 0x3d, 0x3c,
+	0xdb, 0x39, 0xaa, 0x48, 0x5e, 0x3e, 0xf8, 0x2f, 0x00, 0x00, 0xff, 0xff, 0x58, 0x29, 0xda, 0xfa,
+	0xda, 0x0d, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.

api/v1/heimdall.proto

@@ -25,15 +25,22 @@ message Master {
         string id = 1 [(gogoproto.customname) = "ID"];
         string grpc_address = 2 [(gogoproto.customname) = "GRPCAddress"];
         string redis_url = 3 [(gogoproto.customname) = "RedisURL"];
+        repeated Peer peers = 5;
 }
 
 message JoinRequest {
         string id = 1 [(gogoproto.customname) = "ID"];
         string cluster_key = 2;
+        string grpc_address = 3 [(gogoproto.customname) = "GRPCAddress"];
+        string endpoint_ip = 4 [(gogoproto.customname) = "EndpointIP"];
+        uint64 endpoint_port = 5;
+        string interface_name = 6;
 }
 
 message JoinResponse {
         Master master = 1;
+        Node node = 2;
+        repeated Peer peers = 3;
 }
 
 message ConnectRequest {
@@ -74,6 +81,7 @@ message Node {
         uint64 endpoint_port = 5;
         string gateway_ip = 6 [(gogoproto.customname) = "GatewayIP"];
         google.protobuf.Timestamp updated = 7 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+        string interface_name = 8;
 }
 
 message NodesRequest {}

client/join.go

@@ -28,15 +28,7 @@ import (
 )
 
 // Join attempts to connect to the peer and returns the master info
-func (c *Client) Join(key string) (*v1.Master, error) {
+func (c *Client) Join(req *v1.JoinRequest) (*v1.JoinResponse, error) {
 	ctx := context.Background()
-	resp, err := c.heimdallClient.Join(ctx, &v1.JoinRequest{
+	return c.heimdallClient.Join(ctx, req)
-		ID:         c.id,
-		ClusterKey: key,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return resp.Master, nil
 }

cmd/heimdall/main.go

@@ -60,6 +60,12 @@ func main() {
 			Value:  fmt.Sprintf("tcp://%s:%d", heimdall.GetIP(), defaultGRPCPort),
 			EnvVar: "HEIMDALL_GRPC_ADDR",
 		},
+		cli.StringFlag{
+			Name:   "advertise-grpc-address",
+			Usage:  "public advertise grpc address",
+			Value:  fmt.Sprintf("tcp://%s:%d", heimdall.GetIP(), defaultGRPCPort),
+			EnvVar: "HEIMDALL_ADVERTISE_GRPC_ADDR",
+		},
 		cli.StringFlag{
 			Name:   "redis-url, r",
 			Usage:  "uri for datastore backend",

cmd/heimdall/run.go

@@ -43,6 +43,7 @@ func runServer(cx *cli.Context) error {
 	cfg := &heimdall.Config{
 		ID:                   cx.String("id"),
 		GRPCAddress:          cx.String("addr"),
+		AdvertiseGRPCAddress: cx.String("advertise-grpc-address"),
 		GRPCPeerAddress:      cx.String("peer"),
 		ClusterKey:           cx.String("cluster-key"),
 		NodeNetwork:          cx.String("node-network"),

config.go

@@ -29,6 +29,8 @@ type Config struct {
 	ID string
 	// GRPCAddress is the address for the grpc server
 	GRPCAddress string
+	// AdvertiseGRPCAddress is the public address for the grpc server
+	AdvertiseGRPCAddress string
 	// GRPCPeerAddress is the peer address to join
 	GRPCPeerAddress string
 	// ClusterKey is a preshared key for cluster peers

server/join.go

@@ -60,7 +60,35 @@ func (s *Server) Join(ctx context.Context, req *v1.JoinRequest) (*v1.JoinRespons
 		return nil, err
 	}
 
+	peers, err := s.getPeers(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := s.ensureNetworkSubnet(ctx, req.ID); err != nil {
+		return nil, err
+	}
+
+	node, err := s.getNode(ctx, req.ID)
+	if err != nil {
+		if err != redis.ErrNil {
+			return nil, err
+		}
+		n, err := s.createNode(ctx, req)
+		if err != nil {
+			return nil, err
+		}
+
+		if err := s.updatePeerInfo(ctx, req.ID); err != nil {
+			return nil, err
+		}
+
+		node = n
+	}
+
 	return &v1.JoinResponse{
 		Master: &master,
+		Node:   node,
+		Peers:  peers,
 	}, nil
 }

server/net.go

@@ -29,6 +29,7 @@ import (
 	"strings"
 
 	"github.com/gomodule/redigo/redis"
+	"github.com/pkg/errors"
 )
 
 type subnetRange struct {
@@ -37,8 +38,8 @@ type subnetRange struct {
 	Subnet *net.IPNet
 }
 
-func (s *Server) updateNodeNetwork(ctx context.Context, subnet string) error {
+func (s *Server) updateNodeNetwork(ctx context.Context, id string, subnet string) error {
-	if _, err := s.master(ctx, "SET", s.getNodeNetworkKey(s.cfg.ID), subnet); err != nil {
+	if _, err := s.master(ctx, "SET", s.getNodeNetworkKey(id), subnet); err != nil {
 		return err
 	}
 	return nil
@@ -70,7 +71,7 @@ func (s *Server) getOrAllocatePeerIP(ctx context.Context, id string) (net.IP, *n
 func (s *Server) getNodeIP(ctx context.Context, id string) (net.IP, *net.IPNet, error) {
 	subnet, err := redis.String(s.local(ctx, "GET", s.getNodeNetworkKey(id)))
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, errors.Wrap(err, "error getting node ip")
 	}
 	r, err := parseSubnetRange(subnet)
 	if err != nil {

server/node.go

@@ -23,6 +23,7 @@ package server
 
 import (
 	"context"
+	"fmt"
 	"net/url"
 	"sort"
 	"strings"
@@ -82,24 +83,15 @@ func (s *Server) getNode(ctx context.Context, id string) (*v1.Node, error) {
 
 func (s *Server) configureNode() error {
 	ctx := context.Background()
-	nodeKeys, err := redis.Strings(s.local(ctx, "KEYS", s.getNodeKey("*")))
+	nodes, err := s.getNodes(ctx)
 	if err != nil {
 		return err
 	}
 	// attempt to connect to existing
-	if len(nodeKeys) > 0 {
+	if len(nodes) > 0 {
-		for _, nodeKey := range nodeKeys {
+		for _, node := range nodes {
-			nodeData, err := redis.Bytes(s.local(ctx, "GET", nodeKey))
-			if err != nil {
-				logrus.Warn(err)
-				continue
-			}
-			var node v1.Node
-			if err := proto.Unmarshal(nodeData, &node); err != nil {
-				return err
-			}
 			// ignore self
-			if node.Addr == s.cfg.GRPCAddress {
+			if node.ID == s.cfg.ID {
 				continue
 			}
 
@@ -109,14 +101,28 @@ func (s *Server) configureNode() error {
 				logrus.Warn(err)
 				continue
 			}
-			m, err := c.Join(s.cfg.ClusterKey)
+			r, err := c.Join(&v1.JoinRequest{
+				ID:            s.cfg.ID,
+				ClusterKey:    s.cfg.ClusterKey,
+				GRPCAddress:   s.cfg.GRPCAddress,
+				EndpointIP:    s.cfg.EndpointIP,
+				EndpointPort:  uint64(s.cfg.EndpointPort),
+				InterfaceName: s.cfg.InterfaceName,
+			})
 			if err != nil {
 				c.Close()
 				logrus.Warn(err)
 				continue
 			}
 
-			if err := s.joinMaster(m); err != nil {
+			// TODO: start tunnel
+			if err := s.updatePeerConfig(ctx, r.Node, r.Peers); err != nil {
+				return err
+			}
+			// TODO: wait for tunnel to come up
+			time.Sleep(time.Second * 20)
+
+			if err := s.joinMaster(r.Master); err != nil {
 				c.Close()
 				logrus.Warn(err)
 				continue
@@ -154,6 +160,8 @@ func (s *Server) configureNode() error {
 		return err
 	}
 
+	// TODO: start tunnel
+
 	if err := s.joinMaster(&master); err != nil {
 		return err
 	}
@@ -163,14 +171,19 @@ func (s *Server) configureNode() error {
 	return nil
 }
 
-func (s *Server) disableReplica() {
+func (s *Server) disableReplica() error {
-	s.wpool = getPool(s.cfg.RedisURL)
+	p, err := getPool(s.cfg.RedisURL)
+	if err != nil {
+		return err
+	}
+	s.wpool = p
 
 	// signal replica monitor to stop if started as a peer
 	close(s.replicaCh)
 
 	// unset peer
 	s.cfg.GRPCPeerAddress = ""
+	return nil
 }
 
 func (s *Server) replicaMonitor() {
@@ -187,7 +200,7 @@ func (s *Server) replicaMonitor() {
 						logrus.Error(err)
 						continue
 					}
-					if n.ID != s.cfg.ID {
+					if n == nil || n.ID != s.cfg.ID {
 						logrus.Debugf("waiting for new master to initialize: %s", n.ID)
 						continue
 					}
@@ -242,12 +255,15 @@ func (s *Server) masterHeartbeat() {
 func (s *Server) joinMaster(m *v1.Master) error {
 	// configure replica
 	logrus.Infof("configuring node as replica of %+v", m.ID)
-	conn, err := redis.DialURL(s.cfg.RedisURL)
+	pool, err := getPool(s.cfg.RedisURL)
 	if err != nil {
-		return errors.Wrap(err, "unable to connect to redis")
+		return err
 	}
+
+	conn := pool.Get()
 	defer conn.Close()
 
+	logrus.Debugf("configuring redis as slave of %s", m.RedisURL)
 	u, err := url.Parse(m.RedisURL)
 	if err != nil {
 		return errors.Wrap(err, "error parsing master redis url")
@@ -258,15 +274,11 @@ func (s *Server) joinMaster(m *v1.Master) error {
 	if _, err := conn.Do("REPLICAOF", host, port); err != nil {
 		return err
 	}
-	// auth
-	auth, ok := u.User.Password()
-	if ok {
-		if _, err := conn.Do("CONFIG", "SET", "MASTERAUTH", auth); err != nil {
-			return errors.Wrap(err, "error authenticating to redis")
-		}
-	}
 
-	s.wpool = getPool(m.RedisURL)
+	s.wpool, err = getPool(m.RedisURL)
+	if err != nil {
+		return err
+	}
 	return nil
 }
 
@@ -275,10 +287,21 @@ func (s *Server) updateMasterInfo(ctx context.Context) error {
 	if _, err := s.master(ctx, "SET", clusterKey, s.cfg.ClusterKey); err != nil {
 		return err
 	}
+	// build redis url with gateway ip
+	gatewayIP, _, err := s.getNodeIP(ctx, s.cfg.ID)
+	if err != nil {
+		return err
+	}
+	u, err := url.Parse(s.cfg.RedisURL)
+	if err != nil {
+		return err
+	}
+	// update master redis url to gateway to serve over wireguard
+	u.Host = fmt.Sprintf("%s:%s", gatewayIP.String(), u.Port())
 	m := &v1.Master{
 		ID:          s.cfg.ID,
-		GRPCAddress: s.cfg.GRPCAddress,
+		GRPCAddress: s.cfg.AdvertiseGRPCAddress,
-		RedisURL:    s.cfg.AdvertiseRedisURL,
+		RedisURL:    u.String(),
 	}
 	data, err := proto.Marshal(m)
 	if err != nil {
@@ -292,23 +315,30 @@ func (s *Server) updateMasterInfo(ctx context.Context) error {
 	if _, err := s.master(ctx, "EXPIRE", masterKey, int(masterHeartbeatInterval.Seconds())); err != nil {
 		return errors.Wrap(err, "error setting expire for master info")
 	}
+
 	return nil
 }
 
-func (s *Server) nodeHeartbeat(ctx context.Context) {
+func (s *Server) updateNodeInfo(ctx context.Context) {
 	logrus.Debugf("starting node heartbeat: ttl=%s", nodeHeartbeatInterval)
 	t := time.NewTicker(nodeHeartbeatInterval)
-	key := s.getNodeKey(s.cfg.ID)
 	for range t.C {
-		keyPair, err := s.getOrCreateKeyPair(ctx, s.cfg.ID)
+		if err := s.updateLocalNodeInfo(ctx); err != nil {
-		if err != nil {
 			logrus.Error(err)
 			continue
 		}
+	}
+}
+
+func (s *Server) updateLocalNodeInfo(ctx context.Context) error {
+	key := s.getNodeKey(s.cfg.ID)
+	keyPair, err := s.getOrCreateKeyPair(ctx, s.cfg.ID)
+	if err != nil {
+		return err
+	}
 	nodeIP, _, err := s.getNodeIP(ctx, s.cfg.ID)
 	if err != nil {
-			logrus.Error(err)
+		return err
-			continue
 	}
 	node := &v1.Node{
 		Updated:       time.Now(),
@@ -318,22 +348,58 @@ func (s *Server) nodeHeartbeat(ctx context.Context) {
 		EndpointIP:    s.cfg.EndpointIP,
 		EndpointPort:  uint64(s.cfg.EndpointPort),
 		GatewayIP:     nodeIP.String(),
+		InterfaceName: s.cfg.InterfaceName,
 	}
 
 	data, err := proto.Marshal(node)
 	if err != nil {
-			logrus.Error(err)
+		return err
-			continue
 	}
 
 	if _, err := s.master(ctx, "SET", key, data); err != nil {
-			logrus.Error(err)
+		return err
-			continue
 	}
 
 	if _, err := s.master(ctx, "EXPIRE", key, nodeHeartbeatExpiry); err != nil {
-			logrus.Error(err)
+		return err
-			continue
-		}
 	}
+
+	return nil
+}
+
+func (s *Server) createNode(ctx context.Context, req *v1.JoinRequest) (*v1.Node, error) {
+	key := s.getNodeKey(req.ID)
+	keyPair, err := s.getOrCreateKeyPair(ctx, req.ID)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error getting/creating keypair for %s", req.ID)
+	}
+	nodeIP, _, err := s.getNodeIP(ctx, req.ID)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error getting node ip for %s", req.ID)
+	}
+	node := &v1.Node{
+		Updated:       time.Now(),
+		ID:            req.ID,
+		Addr:          req.GRPCAddress,
+		KeyPair:       keyPair,
+		EndpointIP:    req.EndpointIP,
+		EndpointPort:  uint64(req.EndpointPort),
+		GatewayIP:     nodeIP.String(),
+		InterfaceName: req.InterfaceName,
+	}
+
+	data, err := proto.Marshal(node)
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := s.master(ctx, "SET", key, data); err != nil {
+		return nil, err
+	}
+
+	if _, err := s.master(ctx, "EXPIRE", key, nodeHeartbeatExpiry); err != nil {
+		return nil, err
+	}
+
+	return node, nil
 }

server/peer.go

@@ -69,10 +69,9 @@ func (s *Server) getPeers(ctx context.Context) ([]*v1.Peer, error) {
 
 func (s *Server) peerUpdater(ctx context.Context) {
 	logrus.Debugf("starting peer config updater: ttl=%s", peerConfigUpdateInterval)
-
 	t := time.NewTicker(peerConfigUpdateInterval)
-
 	for range t.C {
+		logrus.Debug("peer config update")
 		uctx, cancel := context.WithTimeout(ctx, peerConfigUpdateInterval)
 		if err := s.updatePeerInfo(uctx, s.cfg.ID); err != nil {
 			logrus.Errorf("updateLocalPeerInfo: %s", err)
@@ -80,7 +79,23 @@ func (s *Server) peerUpdater(ctx context.Context) {
 			continue
 		}
 
-		if err := s.updatePeerConfig(uctx); err != nil {
+		peers, err := s.getPeers(ctx)
+		if err != nil {
+			logrus.Error(err)
+			cancel()
+			continue
+		}
+
+		logrus.Debugf("peer update: peers %+v", peers)
+
+		node, err := s.getNode(ctx, s.cfg.ID)
+		if err != nil {
+			logrus.Error(err)
+			cancel()
+			continue
+		}
+
+		if err := s.updatePeerConfig(uctx, node, peers); err != nil {
 			logrus.Errorf("updatePeerConfig: %s", err)
 			cancel()
 			continue
@@ -208,47 +223,29 @@ func (s *Server) getPeerInfo(ctx context.Context, id string) (*v1.Peer, error) {
 	return &peer, nil
 }
 
-func (s *Server) updatePeerConfig(ctx context.Context) error {
+func (s *Server) updatePeerConfig(ctx context.Context, node *v1.Node, peers []*v1.Peer) error {
-	peerKeys, err := redis.Strings(s.local(ctx, "KEYS", s.getPeerKey("*")))
+	var nodePeers []*v1.Peer
-	if err != nil {
+	for _, peer := range peers {
-		return err
-	}
-	var peers []*v1.Peer
-	for _, peerKey := range peerKeys {
-		peerData, err := redis.Bytes(s.local(ctx, "GET", peerKey))
-		if err != nil {
-			return err
-		}
-		var p v1.Peer
-		if err := proto.Unmarshal(peerData, &p); err != nil {
-			return err
-		}
-
 		// do not add self as a peer
-		if p.ID == s.cfg.ID {
+		if peer.ID == node.ID {
 			continue
 		}
 
-		peers = append(peers, &p)
+		nodePeers = append(nodePeers, peer)
 	}
 
-	keyPair, err := s.getOrCreateKeyPair(ctx, s.cfg.ID)
+	keyPair, err := s.getOrCreateKeyPair(ctx, node.ID)
 	if err != nil {
 		return err
 	}
 
-	gatewayIP, gatewayNet, err := s.getNodeIP(ctx, s.cfg.ID)
+	//size, _ := gatewayNet.Mask.Size()
-	if err != nil {
-		return err
-	}
-
-	size, _ := gatewayNet.Mask.Size()
 	wireguardCfg := &wg.Config{
-		Iface:      s.cfg.InterfaceName,
+		Iface:      node.InterfaceName,
 		PrivateKey: keyPair.PrivateKey,
-		ListenPort: s.cfg.EndpointPort,
+		ListenPort: int(node.EndpointPort),
-		Address:    fmt.Sprintf("%s/%d", gatewayIP.To4().String(), size),
+		Address:    fmt.Sprintf("%s/%d", node.GatewayIP, 16),
-		Peers:      peers,
+		Peers:      nodePeers,
 	}
 
 	wireguardConfigPath := s.getWireguardConfigPath()

server/server.go

@@ -25,6 +25,7 @@ import (
 	"context"
 	"fmt"
 	"io/ioutil"
+	"net/url"
 	"path/filepath"
 	"runtime"
 	"runtime/pprof"
@@ -81,7 +82,10 @@ type Server struct {
 
 // NewServer returns a new Heimdall server
 func NewServer(cfg *heimdall.Config) (*Server, error) {
-	pool := getPool(cfg.RedisURL)
+	pool, err := getPool(cfg.RedisURL)
+	if err != nil {
+		return nil, err
+	}
 	return &Server{
 		cfg:       cfg,
 		rpool:     pool,
@@ -121,13 +125,28 @@ func (s *Server) Run() error {
 		}
 		defer c.Close()
 
-		master, err := c.Join(s.cfg.ClusterKey)
+		r, err := c.Join(&v1.JoinRequest{
+			ID:            s.cfg.ID,
+			ClusterKey:    s.cfg.ClusterKey,
+			GRPCAddress:   s.cfg.GRPCAddress,
+			EndpointIP:    s.cfg.EndpointIP,
+			EndpointPort:  uint64(s.cfg.EndpointPort),
+			InterfaceName: s.cfg.InterfaceName,
+		})
 		if err != nil {
 			return err
 		}
 
-		logrus.Debugf("master info received: %+v", master)
+		logrus.Debugf("response: %+v", r)
-		if err := s.joinMaster(master); err != nil {
+		// start tunnel
+		if err := s.updatePeerConfig(ctx, r.Node, r.Peers); err != nil {
+			return errors.Wrap(err, "error updating peer config")
+		}
+		// TODO: wait for tunnel to come up
+		time.Sleep(time.Second * 20)
+
+		logrus.Debugf("master info received: %+v", r)
+		if err := s.joinMaster(r.Master); err != nil {
 			return err
 		}
 
@@ -144,12 +163,17 @@ func (s *Server) Run() error {
 	}
 
 	// ensure node network subnet
-	if err := s.ensureNetworkSubnet(ctx); err != nil {
+	if err := s.ensureNetworkSubnet(ctx, s.cfg.ID); err != nil {
+		return err
+	}
+
+	// initial node update
+	if err := s.updateLocalNodeInfo(ctx); err != nil {
 		return err
 	}
 
 	// start node heartbeat to update in redis
-	go s.nodeHeartbeat(ctx)
+	go s.updateNodeInfo(ctx)
 
 	// initial peer info update
 	if err := s.updatePeerInfo(ctx, s.cfg.ID); err != nil {
@@ -157,7 +181,15 @@ func (s *Server) Run() error {
 	}
 
 	// initial config update
-	if err := s.updatePeerConfig(ctx); err != nil {
+	node, err := s.getNode(ctx, s.cfg.ID)
+	if err != nil {
+		return err
+	}
+	peers, err := s.getPeers(ctx)
+	if err != nil {
+		return err
+	}
+	if err := s.updatePeerConfig(ctx, node, peers); err != nil {
 		return err
 	}
 
@@ -184,7 +216,7 @@ func (s *Server) Run() error {
 		}
 	}()
 
-	err := <-errCh
+	err = <-errCh
 	return err
 }
 
@@ -194,20 +226,33 @@ func (s *Server) Stop() error {
 	return nil
 }
 
-func getPool(u string) *redis.Pool {
+func getPool(redisUrl string) (*redis.Pool, error) {
 	pool := redis.NewPool(func() (redis.Conn, error) {
-		conn, err := redis.DialURL(u)
+		conn, err := redis.DialURL(redisUrl)
 		if err != nil {
 			return nil, errors.Wrap(err, "unable to connect to redis")
 		}
+
+		u, err := url.Parse(redisUrl)
+		if err != nil {
+			return nil, err
+		}
+
+		auth, ok := u.User.Password()
+		if ok {
+			logrus.Debug("setting masterauth for redis")
+			if _, err := conn.Do("CONFIG", "SET", "MASTERAUTH", auth); err != nil {
+				return nil, errors.Wrap(err, "error authenticating to redis")
+			}
+		}
 		return conn, nil
 	}, 10)
 
-	return pool
+	return pool, nil
 }
 
-func (s *Server) ensureNetworkSubnet(ctx context.Context) error {
+func (s *Server) ensureNetworkSubnet(ctx context.Context, id string) error {
-	network, err := redis.String(s.local(ctx, "GET", s.getNodeNetworkKey(s.cfg.ID)))
+	network, err := redis.String(s.local(ctx, "GET", s.getNodeNetworkKey(id)))
 	if err != nil {
 		if err != redis.ErrNil {
 			return err
@@ -222,7 +267,6 @@ func (s *Server) ensureNetworkSubnet(ctx context.Context) error {
 		if err != nil {
 			return err
 		}
-		logrus.Debug(nodeNetworkKeys)
 		lookup := map[string]struct{}{}
 		for _, netKey := range nodeNetworkKeys {
 			n, err := redis.String(s.local(ctx, "GET", netKey))
@@ -244,8 +288,8 @@ func (s *Server) ensureNetworkSubnet(ctx context.Context) error {
 				subnet = n
 				continue
 			}
-			logrus.Debugf("allocated network %s for %s", n.String(), s.cfg.ID)
+			logrus.Debugf("allocated network %s for %s", n.String(), id)
-			if err := s.updateNodeNetwork(ctx, n.String()); err != nil {
+			if err := s.updateNodeNetwork(ctx, id, n.String()); err != nil {
 				return err
 			}
 			break
@@ -253,7 +297,7 @@ func (s *Server) ensureNetworkSubnet(ctx context.Context) error {
 
 		return nil
 	}
-	logrus.Debugf("node network: %s", network)
+	logrus.Debugf("node network for %s: %s", id, network)
 	return nil
 }