master: remove hard coded filer settings in master.toml

fix https://github.com/chrislusf/seaweedfs/issues/2529

weed/server/master_server.go

@@ -208,7 +208,6 @@ func (ms *MasterServer) proxyToLeader(f http.HandlerFunc) http.HandlerFunc {
 }
 
 func (ms *MasterServer) startAdminScripts() {
-	var err error
 
 	v := util.GetViper()
 	adminScripts := v.GetString("master.maintenance.scripts")
@@ -220,9 +219,6 @@ func (ms *MasterServer) startAdminScripts() {
 	v.SetDefault("master.maintenance.sleep_minutes", 17)
 	sleepMinutes := v.GetInt("master.maintenance.sleep_minutes")
 
-	v.SetDefault("master.filer.default", "localhost:8888")
-	filerHostPort := v.GetString("master.filer.default")
-
 	scriptLines := strings.Split(adminScripts, "\n")
 	if !strings.Contains(adminScripts, "lock") {
 		scriptLines = append(append([]string{}, "lock"), scriptLines...)
@@ -235,14 +231,9 @@ func (ms *MasterServer) startAdminScripts() {
 	shellOptions.GrpcDialOption = security.LoadClientTLS(v, "grpc.master")
 	shellOptions.Masters = &masterAddress
 
-	shellOptions.FilerAddress = pb.ServerAddress(filerHostPort)
 	shellOptions.Directory = "/"
-	if err != nil {
-		glog.V(0).Infof("failed to parse master.filer.default = %s : %v\n", filerHostPort, err)
-		return
-	}
 
-	commandEnv := shell.NewCommandEnv(shellOptions)
+	commandEnv := shell.NewCommandEnv(&shellOptions)
 
 	reg, _ := regexp.Compile(`'.*?'|".*?"|\S+`)
 
@@ -254,6 +245,10 @@ func (ms *MasterServer) startAdminScripts() {
 		for {
 			time.Sleep(time.Duration(sleepMinutes) * time.Minute)
 			if ms.Topo.IsLeader() {
+				shellOptions.FilerAddress = ms.GetOneFiler()
+				if shellOptions.FilerAddress == "" {
+					continue
+				}
 				for _, line := range scriptLines {
 					for _, c := range strings.Split(line, ";") {
 						processEachCmd(reg, c, commandEnv)