[public-api] Do not use localhost as address, not reachable in k8s

Author: easyCZ

components/common-go/baseserver/server.go

@@ -347,21 +347,21 @@ type builtinServices struct {
 func newBuiltinServices(server *Server) *builtinServices {
 	healthAddr := fmt.Sprintf(":%d", BuiltinHealthPort)
 	if server.options.underTest {
-		healthAddr = "localhost:0"
+		healthAddr = ":0"
 	}
 
 	return &builtinServices{
 		underTest: server.options.underTest,
 		Debug: &http.Server{
-			Addr:    fmt.Sprintf("localhost:%d", BuiltinDebugPort),
+			Addr:    fmt.Sprintf(":%d", BuiltinDebugPort),
 			Handler: pprof.Handler(),
 		},
 		Health: &http.Server{
 			Addr:    healthAddr,
 			Handler: server.healthEndpoint(),
 		},
 		Metrics: &http.Server{
-			Addr:    fmt.Sprintf("localhost:%d", BuiltinMetricsPort),
+			Addr:    fmt.Sprintf(":%d", BuiltinMetricsPort),
 			Handler: server.metricsEndpoint(),
 		},
 	}

components/public-api-server/pkg/server/server.go

@@ -20,7 +20,7 @@ func Start(logger *logrus.Entry, cfg Config) error {
 
 	srv, err := baseserver.New("public_api_server",
 		baseserver.WithLogger(logger),
-		baseserver.WithGRPC(&baseserver.ServerConfiguration{Address: fmt.Sprintf("localhost:%d", cfg.GRPCPort)}),
+		baseserver.WithGRPC(&baseserver.ServerConfiguration{Address: fmt.Sprintf(":%d", cfg.GRPCPort)}),
 		baseserver.WithMetricsRegistry(registry),
 	)
 	if err != nil {