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package command
import ( "net/http" "os" "runtime" "strconv" "strings"
"github.com/chrislusf/raft/protobuf" "github.com/chrislusf/seaweedfs/weed/glog" "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/util" "github.com/gorilla/mux" "github.com/spf13/viper" "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
The configuration file "security.toml" is read from ".", "$HOME/.seaweedfs/", or "/etc/seaweedfs/", in that order.
The example security.toml configuration file can be generated by "weed scaffold -config=security"
`, }
var ( mport = cmdMaster.Flag.Int("port", 9333, "http listen port") masterIp = cmdMaster.Flag.String("ip", "localhost", "master <ip>|<server> 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.Float64("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.") disableHttp = cmdMaster.Flag.Bool("disableHttp", false, "disable http requests, only gRPC operations are allowed.") 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 {
util.LoadConfiguration("security", false) util.LoadConfiguration("master", false)
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 > util.VolumeSizeLimitGB*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, *disableHttp, )
listeningAddress := *masterBindIp + ":" + strconv.Itoa(*mport)
glog.V(0).Infoln("Start Seaweed Master", util.VERSION, "at", listeningAddress)
masterListener, e := util.NewListener(listeningAddress, 0) if e != nil { glog.Fatalf("Master startup error: %v", e) }
go func() { // start raftServer
myMasterAddress, peers := checkPeers(*masterIp, *mport, *masterPeers) raftServer := weed_server.NewRaftServer(security.LoadClientTLS(viper.Sub("grpc"), "master"), peers, myMasterAddress, *metaFolder, ms.Topo, *mpulse) if raftServer == nil { glog.Fatalf("please verify %s is writable, see https://github.com/chrislusf/seaweedfs/issues/717", *metaFolder) } ms.SetRaftServer(raftServer) r.HandleFunc("/cluster/status", raftServer.StatusHandler).Methods("GET")
// starting grpc server
grpcPort := *mport + 10000 grpcL, err := util.NewListener(*masterBindIp+":"+strconv.Itoa(grpcPort), 0) if err != nil { glog.Fatalf("master failed to listen on grpc port %d: %v", grpcPort, err) } // Create your protocol servers.
grpcS := util.NewGrpcServer(security.LoadServerTLS(viper.Sub("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, *masterBindIp, grpcPort) grpcS.Serve(grpcL) }()
// start http server
httpS := &http.Server{Handler: r} if err := httpS.Serve(masterListener); 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 }
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