prevent systemd from restarting when configuration error

main/main.go

@@ -105,7 +105,8 @@ func main() {
 	server, err := startV2Ray()
 	if err != nil {
 		fmt.Println(err.Error())
-		os.Exit(-1)
+		// Configuration error. Exit with a special value to prevent systemd from restarting.
+		os.Exit(23)
 	}
 
 	if *test {

release/config/systemd/v2ray.service

@@ -13,6 +13,7 @@ Type=simple
 PIDFile=/var/run/v2ray.pid
 ExecStart=/usr/bin/v2ray/v2ray -config /etc/v2ray/config.json
 Restart=on-failure
+RestartPreventExitStatus=23  # Configuration error
 
 [Install]
 WantedBy=multi-user.target