mirror of
https://github.com/chrislusf/seaweedfs
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* refactor(net_timeout): `listner` -> `listener` Signed-off-by: Ryan Russell <git@ryanrussell.org> * refactor(s3): `s3ApiLocalListner` -> `s3ApiLocalListener` Signed-off-by: Ryan Russell <git@ryanrussell.org> * refactor(filer): `localPublicListner` -> `localPublicListener` Signed-off-by: Ryan Russell <git@ryanrussell.org> * refactor(command): `masterLocalListner` -> `masterLocalListener` Signed-off-by: Ryan Russell <git@ryanrussell.org> * refactor(net_timeout): `ipListner` -> `ipListener` Signed-off-by: Ryan Russell <git@ryanrussell.org> Signed-off-by: Ryan Russell <git@ryanrussell.org>
154 lines
5 KiB
Go
154 lines
5 KiB
Go
package command
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import (
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"context"
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"fmt"
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"net/http"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/gorilla/mux"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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"github.com/seaweedfs/seaweedfs/weed/security"
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weed_server "github.com/seaweedfs/seaweedfs/weed/server"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"google.golang.org/grpc/reflection"
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)
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var (
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mf MasterOptions
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)
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func init() {
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cmdMasterFollower.Run = runMasterFollower // break init cycle
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mf.port = cmdMasterFollower.Flag.Int("port", 9334, "http listen port")
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mf.portGrpc = cmdMasterFollower.Flag.Int("port.grpc", 0, "grpc listen port")
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mf.ipBind = cmdMasterFollower.Flag.String("ip.bind", "", "ip address to bind to. Default to localhost.")
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mf.peers = cmdMasterFollower.Flag.String("masters", "localhost:9333", "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")
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mf.ip = aws.String(util.DetectedHostAddress())
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mf.metaFolder = aws.String("")
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mf.volumeSizeLimitMB = nil
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mf.volumePreallocate = nil
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mf.defaultReplication = nil
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mf.garbageThreshold = aws.Float64(0.1)
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mf.whiteList = nil
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mf.disableHttp = aws.Bool(false)
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mf.metricsAddress = aws.String("")
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mf.metricsIntervalSec = aws.Int(0)
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mf.raftResumeState = aws.Bool(false)
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}
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var cmdMasterFollower = &Command{
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UsageLine: "master.follower -port=9333 -masters=<master1Host>:<master1Port>",
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Short: "start a master follower",
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Long: `start a master follower to provide volume=>location mapping service
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The master follower does not participate in master election.
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It just follow the existing masters, and listen for any volume location changes.
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In most cases, the master follower is not needed. In big data centers with thousands of volume
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servers. In theory, the master may have trouble to keep up with the write requests and read requests.
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The master follower can relieve the master from from read requests, which only needs to
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lookup a fileId or volumeId.
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The master follower currently can handle fileId lookup requests:
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/dir/lookup?volumeId=4
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/dir/lookup?fileId=4,49c50924569199
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And gRPC API
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rpc LookupVolume (LookupVolumeRequest) returns (LookupVolumeResponse) {}
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This master follower is stateless and can run from any place.
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`,
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}
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func runMasterFollower(cmd *Command, args []string) bool {
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util.LoadConfiguration("security", false)
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util.LoadConfiguration("master", false)
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if *mf.portGrpc == 0 {
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*mf.portGrpc = 10000 + *mf.port
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}
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startMasterFollower(mf)
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return true
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}
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func startMasterFollower(masterOptions MasterOptions) {
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// collect settings from main masters
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masters := pb.ServerAddresses(*mf.peers).ToAddressMap()
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var err error
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grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.master")
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for i := 0; i < 10; i++ {
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err = pb.WithOneOfGrpcMasterClients(false, masters, grpcDialOption, func(client master_pb.SeaweedClient) error {
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resp, err := client.GetMasterConfiguration(context.Background(), &master_pb.GetMasterConfigurationRequest{})
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if err != nil {
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return fmt.Errorf("get master grpc address %v configuration: %v", masters, err)
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}
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masterOptions.defaultReplication = &resp.DefaultReplication
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masterOptions.volumeSizeLimitMB = aws.Uint(uint(resp.VolumeSizeLimitMB))
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masterOptions.volumePreallocate = &resp.VolumePreallocate
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return nil
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})
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if err != nil {
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glog.V(0).Infof("failed to talk to filer %v: %v", masters, err)
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glog.V(0).Infof("wait for %d seconds ...", i+1)
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time.Sleep(time.Duration(i+1) * time.Second)
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}
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}
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if err != nil {
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glog.Errorf("failed to talk to filer %v: %v", masters, err)
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return
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}
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option := masterOptions.toMasterOption(nil)
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option.IsFollower = true
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if *masterOptions.ipBind == "" {
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*masterOptions.ipBind = *masterOptions.ip
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}
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r := mux.NewRouter()
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ms := weed_server.NewMasterServer(r, option, masters)
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listeningAddress := util.JoinHostPort(*masterOptions.ipBind, *masterOptions.port)
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glog.V(0).Infof("Start Seaweed Master %s at %s", util.Version(), listeningAddress)
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masterListener, masterLocalListener, e := util.NewIpAndLocalListeners(*masterOptions.ipBind, *masterOptions.port, 0)
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if e != nil {
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glog.Fatalf("Master startup error: %v", e)
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}
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// starting grpc server
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grpcPort := *masterOptions.portGrpc
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grpcL, grpcLocalL, err := util.NewIpAndLocalListeners(*masterOptions.ipBind, grpcPort, 0)
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if err != nil {
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glog.Fatalf("master failed to listen on grpc port %d: %v", grpcPort, err)
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}
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grpcS := pb.NewGrpcServer(security.LoadServerTLS(util.GetViper(), "grpc.master"))
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master_pb.RegisterSeaweedServer(grpcS, ms)
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reflection.Register(grpcS)
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glog.V(0).Infof("Start Seaweed Master %s grpc server at %s:%d", util.Version(), *masterOptions.ip, grpcPort)
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if grpcLocalL != nil {
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go grpcS.Serve(grpcLocalL)
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}
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go grpcS.Serve(grpcL)
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go ms.MasterClient.KeepConnectedToMaster()
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// start http server
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httpS := &http.Server{Handler: r}
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if masterLocalListener != nil {
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go httpS.Serve(masterLocalListener)
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}
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go httpS.Serve(masterListener)
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select {}
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}
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