package command import ( "github.com/chrislusf/raft/protobuf" "github.com/gorilla/mux" "google.golang.org/grpc/reflection" "net/http" "os" "runtime" "sort" "strconv" "strings" "time" "github.com/chrislusf/seaweedfs/weed/util/grace" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/server" "github.com/chrislusf/seaweedfs/weed/storage/backend" "github.com/chrislusf/seaweedfs/weed/util" ) var ( m MasterOptions ) type MasterOptions struct { port *int ip *string ipBind *string metaFolder *string peers *string volumeSizeLimitMB *uint volumePreallocate *bool // pulseSeconds *int defaultReplication *string garbageThreshold *float64 whiteList *string disableHttp *bool metricsAddress *string metricsIntervalSec *int raftResumeState *bool } func init() { cmdMaster.Run = runMaster // break init cycle m.port = cmdMaster.Flag.Int("port", 9333, "http listen port") m.ip = cmdMaster.Flag.String("ip", util.DetectedHostAddress(), "master | address") m.ipBind = cmdMaster.Flag.String("ip.bind", "", "ip address to bind to") m.metaFolder = cmdMaster.Flag.String("mdir", os.TempDir(), "data directory to store meta data") m.peers = cmdMaster.Flag.String("peers", "", "all master nodes in comma separated ip:port list, example: 127.0.0.1:9093,127.0.0.1:9094,127.0.0.1:9095") m.volumeSizeLimitMB = cmdMaster.Flag.Uint("volumeSizeLimitMB", 30*1000, "Master stops directing writes to oversized volumes.") m.volumePreallocate = cmdMaster.Flag.Bool("volumePreallocate", false, "Preallocate disk space for volumes.") // m.pulseSeconds = cmdMaster.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats") m.defaultReplication = cmdMaster.Flag.String("defaultReplication", "000", "Default replication type if not specified.") m.garbageThreshold = cmdMaster.Flag.Float64("garbageThreshold", 0.3, "threshold to vacuum and reclaim spaces") m.whiteList = cmdMaster.Flag.String("whiteList", "", "comma separated Ip addresses having write permission. No limit if empty.") m.disableHttp = cmdMaster.Flag.Bool("disableHttp", false, "disable http requests, only gRPC operations are allowed.") m.metricsAddress = cmdMaster.Flag.String("metrics.address", "", "Prometheus gateway address :") m.metricsIntervalSec = cmdMaster.Flag.Int("metrics.intervalSeconds", 15, "Prometheus push interval in seconds") m.raftResumeState = cmdMaster.Flag.Bool("resumeState", false, "resume previous state on start master server") } 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 The configuration file "security.toml" is read from ".", "$HOME/.seaweedfs/", "/usr/local/etc/seaweedfs/", or "/etc/seaweedfs/", in that order. The example security.toml configuration file can be generated by "weed scaffold -config=security" `, } var ( masterCpuProfile = cmdMaster.Flag.String("cpuprofile", "", "cpu profile output file") masterMemProfile = cmdMaster.Flag.String("memprofile", "", "memory profile output file") ) func runMaster(cmd *Command, args []string) bool { util.LoadConfiguration("security", false) util.LoadConfiguration("master", false) runtime.GOMAXPROCS(runtime.NumCPU()) grace.SetupProfiling(*masterCpuProfile, *masterMemProfile) parent, _ := util.FullPath(*m.metaFolder).DirAndName() if util.FileExists(string(parent)) && !util.FileExists(*m.metaFolder) { os.MkdirAll(*m.metaFolder, 0755) } if err := util.TestFolderWritable(util.ResolvePath(*m.metaFolder)); err != nil { glog.Fatalf("Check Meta Folder (-mdir) Writable %s : %s", *m.metaFolder, err) } var masterWhiteList []string if *m.whiteList != "" { masterWhiteList = strings.Split(*m.whiteList, ",") } if *m.volumeSizeLimitMB > util.VolumeSizeLimitGB*1000 { glog.Fatalf("volumeSizeLimitMB should be smaller than 30000") } startMaster(m, masterWhiteList) return true } func startMaster(masterOption MasterOptions, masterWhiteList []string) { backend.LoadConfiguration(util.GetViper()) myMasterAddress, peers := checkPeers(*masterOption.ip, *masterOption.port, *masterOption.peers) r := mux.NewRouter() ms := weed_server.NewMasterServer(r, masterOption.toMasterOption(masterWhiteList), peers) listeningAddress := *masterOption.ipBind + ":" + strconv.Itoa(*masterOption.port) glog.V(0).Infof("Start Seaweed Master %s at %s", util.Version(), listeningAddress) masterListener, e := util.NewListener(listeningAddress, 0) if e != nil { glog.Fatalf("Master startup error: %v", e) } // start raftServer raftServer, err := weed_server.NewRaftServer(security.LoadClientTLS(util.GetViper(), "grpc.master"), peers, myMasterAddress, util.ResolvePath(*masterOption.metaFolder), ms.Topo, *masterOption.raftResumeState) if raftServer == nil { glog.Fatalf("please verify %s is writable, see https://github.com/chrislusf/seaweedfs/issues/717: %s", *masterOption.metaFolder, err) } ms.SetRaftServer(raftServer) r.HandleFunc("/cluster/status", raftServer.StatusHandler).Methods("GET") // starting grpc server grpcPort := *masterOption.port + 10000 grpcL, err := util.NewListener(*masterOption.ipBind+":"+strconv.Itoa(grpcPort), 0) if err != nil { glog.Fatalf("master failed to listen on grpc port %d: %v", grpcPort, err) } grpcS := pb.NewGrpcServer(security.LoadServerTLS(util.GetViper(), "grpc.master")) master_pb.RegisterSeaweedServer(grpcS, ms) protobuf.RegisterRaftServer(grpcS, raftServer) reflection.Register(grpcS) glog.V(0).Infof("Start Seaweed Master %s grpc server at %s:%d", util.Version(), *masterOption.ipBind, grpcPort) go grpcS.Serve(grpcL) go func() { time.Sleep(1500 * time.Millisecond) if ms.Topo.RaftServer.Leader() == "" && ms.Topo.RaftServer.IsLogEmpty() && isTheFirstOne(myMasterAddress, peers) { if ms.MasterClient.FindLeaderFromOtherPeers(myMasterAddress) == "" { raftServer.DoJoinCommand() } } }() go ms.MasterClient.KeepConnectedToMaster() // start http server httpS := &http.Server{Handler: r} go httpS.Serve(masterListener) select {} } func checkPeers(masterIp string, masterPort int, peers string) (masterAddress string, cleanedPeers []string) { glog.V(0).Infof("current: %s:%d peers:%s", masterIp, masterPort, peers) masterAddress = masterIp + ":" + strconv.Itoa(masterPort) if peers != "" { cleanedPeers = strings.Split(peers, ",") } hasSelf := false for _, peer := range cleanedPeers { if peer == masterAddress { hasSelf = true break } } if !hasSelf { cleanedPeers = append(cleanedPeers, masterAddress) } if len(cleanedPeers)%2 == 0 { glog.Fatalf("Only odd number of masters are supported!") } return } func isTheFirstOne(self string, peers []string) bool { sort.Strings(peers) if len(peers) <= 0 { return true } return self == peers[0] } func (m *MasterOptions) toMasterOption(whiteList []string) *weed_server.MasterOption { return &weed_server.MasterOption{ Host: *m.ip, Port: *m.port, MetaFolder: *m.metaFolder, VolumeSizeLimitMB: *m.volumeSizeLimitMB, VolumePreallocate: *m.volumePreallocate, // PulseSeconds: *m.pulseSeconds, DefaultReplicaPlacement: *m.defaultReplication, GarbageThreshold: *m.garbageThreshold, WhiteList: whiteList, DisableHttp: *m.disableHttp, MetricsAddress: *m.metricsAddress, MetricsIntervalSec: *m.metricsIntervalSec, } }