s3: bind to a specific IP

fix https://github.com/chrislusf/seaweedfs/issues/2516

weed/command/filer.go

@@ -138,6 +138,7 @@ func runFiler(cmd *Command, args []string) bool {
 	startDelay := time.Duration(2)
 	if *filerStartS3 {
 		filerS3Options.filer = &filerAddress
+		filerS3Options.bindIp = f.bindIp
 		go func() {
 			time.Sleep(startDelay * time.Second)
 			filerS3Options.startS3Server()

weed/command/s3.go

@@ -25,6 +25,7 @@ var (
 
 type S3Options struct {
 	filer            *string
+	bindIp           *string
 	port             *int
 	config           *string
 	domainName       *string
@@ -38,6 +39,7 @@ type S3Options struct {
 func init() {
 	cmdS3.Run = runS3 // break init cycle
 	s3StandaloneOptions.filer = cmdS3.Flag.String("filer", "localhost:8888", "filer server address")
+	s3StandaloneOptions.bindIp = cmdS3.Flag.String("ip.bind", "", "ip address to bind to")
 	s3StandaloneOptions.port = cmdS3.Flag.Int("port", 8333, "s3 server http listen port")
 	s3StandaloneOptions.domainName = cmdS3.Flag.String("domainName", "", "suffix of the host name in comma separated list, {bucket}.{domainName}")
 	s3StandaloneOptions.config = cmdS3.Flag.String("config", "", "path to the config file")
@@ -189,7 +191,7 @@ func (s3opt *S3Options) startS3Server() bool {
 
 	httpS := &http.Server{Handler: router}
 
-	listenAddress := fmt.Sprintf(":%d", *s3opt.port)
+	listenAddress := fmt.Sprintf("%s:%d", *s3opt.bindIp, *s3opt.port)
 	s3ApiListener, err := util.NewListener(listenAddress, time.Duration(10)*time.Second)
 	if err != nil {
 		glog.Fatalf("S3 API Server listener on %s error: %v", listenAddress, err)

weed/command/server.go

@@ -180,6 +180,7 @@ func runServer(cmd *Command, args []string) bool {
 	filerOptions.masters = pb.ServerAddresses(*masterOptions.peers).ToAddresses()
 	filerOptions.ip = serverIp
 	filerOptions.bindIp = serverBindIp
+	s3Options.bindIp = serverBindIp
 	serverOptions.v.ip = serverIp
 	serverOptions.v.bindIp = serverBindIp
 	serverOptions.v.masters = pb.ServerAddresses(*masterOptions.peers).ToAddresses()