Debugging applications in odo - OpenShift Do developer CLI (odo) | CLI tools

Debugging an application
Configuring debugging parameters

Interactive debugging in odo is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview/.

With odo, you can attach a debugger to remotely debug your application. This feature is only supported for NodeJS and Java components.

Components created with odo run in the debug mode by default. A debugger agent runs on the component, on a specific port. To start debugging your application, you must start port forwarding and attach the local debugger bundled in your Integrated development environment (IDE).

Debugging an application

You can debug your application on in odo with the odo debug command.

Procedure

After an application is deployed, start the port forwarding for your component to debug the application:
```
$ odo debug port-forward
```
Attach the debugger bundled in your IDE to the component. Instructions vary depending on your IDE.

Configuring debugging parameters

You can specify a remote port with odo config command and a local port with the odo debug command.

Procedure

To set a remote port on which the debugging agent should run, run:
```
$ odo config set DebugPort 9292
```
You must redeploy your component for this value to be reflected on the component.
To set a local port to port forward, run:
```
$ odo debug port-forward --local-port 9292
```
The local port value does not persist. You must provide it every time you need to change the port.