package command import ( "net/http" "os" "runtime" "strconv" "strings" "time" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/server" "github.com/chrislusf/seaweedfs/weed/util" "github.com/gorilla/mux" "github.com/soheilhy/cmux" "google.golang.org/grpc/reflection" ) func init() { cmdMaster.Run = runMaster // break init cycle } var cmdMaster = &Command{ UsageLine: "master -port=9333", Short: "start a master server", Long: `start a master server to provide volume=>location mapping service and sequence number of file ids `, } var ( mport = cmdMaster.Flag.Int("port", 9333, "http listen port") masterIp = cmdMaster.Flag.String("ip", "localhost", "master | address") masterBindIp = cmdMaster.Flag.String("ip.bind", "0.0.0.0", "ip address to bind to") metaFolder = cmdMaster.Flag.String("mdir", os.TempDir(), "data directory to store meta data") masterPeers = cmdMaster.Flag.String("peers", "", "all master nodes in comma separated ip:port list, example: 127.0.0.1:9093,127.0.0.1:9094") volumeSizeLimitMB = cmdMaster.Flag.Uint("volumeSizeLimitMB", 30*1000, "Master stops directing writes to oversized volumes.") volumePreallocate = cmdMaster.Flag.Bool("volumePreallocate", false, "Preallocate disk space for volumes.") mpulse = cmdMaster.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats") defaultReplicaPlacement = cmdMaster.Flag.String("defaultReplication", "000", "Default replication type if not specified.") // mTimeout = cmdMaster.Flag.Int("idleTimeout", 30, "connection idle seconds") mMaxCpu = cmdMaster.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs") garbageThreshold = cmdMaster.Flag.String("garbageThreshold", "0.3", "threshold to vacuum and reclaim spaces") masterWhiteListOption = cmdMaster.Flag.String("whiteList", "", "comma separated Ip addresses having write permission. No limit if empty.") masterSecureKey = cmdMaster.Flag.String("secure.secret", "", "secret to encrypt Json Web Token(JWT)") masterCpuProfile = cmdMaster.Flag.String("cpuprofile", "", "cpu profile output file") masterMemProfile = cmdMaster.Flag.String("memprofile", "", "memory profile output file") masterWhiteList []string ) func runMaster(cmd *Command, args []string) bool { if *mMaxCpu < 1 { *mMaxCpu = runtime.NumCPU() } runtime.GOMAXPROCS(*mMaxCpu) util.SetupProfiling(*masterCpuProfile, *masterMemProfile) if err := util.TestFolderWritable(*metaFolder); err != nil { glog.Fatalf("Check Meta Folder (-mdir) Writable %s : %s", *metaFolder, err) } if *masterWhiteListOption != "" { masterWhiteList = strings.Split(*masterWhiteListOption, ",") } if *volumeSizeLimitMB > 30*1000 { glog.Fatalf("volumeSizeLimitMB should be smaller than 30000") } r := mux.NewRouter() ms := weed_server.NewMasterServer(r, *mport, *metaFolder, *volumeSizeLimitMB, *volumePreallocate, *mpulse, *defaultReplicaPlacement, *garbageThreshold, masterWhiteList, *masterSecureKey, ) listeningAddress := *masterBindIp + ":" + strconv.Itoa(*mport) glog.V(0).Infoln("Start Seaweed Master", util.VERSION, "at", listeningAddress) listener, e := util.NewListener(listeningAddress, 0) if e != nil { glog.Fatalf("Master startup error: %v", e) } go func() { time.Sleep(100 * time.Millisecond) myMasterAddress, peers := checkPeers(*masterIp, *mport, *masterPeers) raftServer := weed_server.NewRaftServer(r, peers, myMasterAddress, *metaFolder, ms.Topo, *mpulse) ms.SetRaftServer(raftServer) }() // start grpc and http server m := cmux.New(listener) grpcL := m.Match(cmux.HTTP2HeaderField("content-type", "application/grpc")) httpL := m.Match(cmux.Any()) // Create your protocol servers. grpcS := util.NewGrpcServer() master_pb.RegisterSeaweedServer(grpcS, ms) reflection.Register(grpcS) httpS := &http.Server{Handler: r} go grpcS.Serve(grpcL) go httpS.Serve(httpL) if err := m.Serve(); err != nil { glog.Fatalf("master server failed to serve: %v", err) } return true } func checkPeers(masterIp string, masterPort int, peers string) (masterAddress string, cleanedPeers []string) { masterAddress = masterIp + ":" + strconv.Itoa(masterPort) if peers != "" { cleanedPeers = strings.Split(peers, ",") } hasSelf := false for _, peer := range cleanedPeers { if peer == masterAddress { hasSelf = true break } } peerCount := len(cleanedPeers) if !hasSelf { peerCount += 1 } if peerCount%2 == 0 { glog.Fatalf("Only odd number of masters are supported!") } return }