Notify systemd for etcd only node (#3732)

Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

pkg/cli/server/server.go

@@ -382,7 +382,7 @@ func run(app *cli.Context, cfg *cmds.Server, leaderControllers server.CustomCont
 		}
 
 		logrus.Info(version.Program + " is up and running")
-		if cfg.DisableAgent && os.Getenv("NOTIFY_SOCKET") != "" {
+		if (cfg.DisableAgent || cfg.DisableAPIServer) && os.Getenv("NOTIFY_SOCKET") != "" {
 			systemd.SdNotify(true, "READY=1\n")
 		}
 	}()