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You can configure specific ports during service deployment based on your service’s configuration and requirements. Services that don’t need to be exposed through ports can be deployed without port settings.
Incorrect port configuration will prevent access to the deployed service.

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Apply During Deployment

Enter a port number in the Port field. This port number should match the port configured in your source code or environment variables. If you’re using a framework with default ports, make sure to use those port numbers.
If no port number is specified, the service will be deployed without exposing any ports. This may prevent external access to your service and affect features like health checks or monitoring. Make sure to specify appropriate ports if your service requires network communication.
Some services (like Discord bots) don’t need port configuration. For these services, leave the Port field empty during deployment. If a port is accidentally configured, the service may get stuck in the Starting state and eventually fail.

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Manage After Deployment

To change or correct a port number after deployment, go to the settings tab in the service page. Enter the new port number in the Port field and click Deploy.
Incorrect port configuration may cause your service to fail, resulting in a 503 error when trying to access your service domain.