Web App¶

This section describes how to run the pipeline Django web app/server.

Starting the Pipeline Web App¶

Make sure you installed and compiled correctly the frontend assets see guide

Start the Django development web server:
```
(pipeline_env)$ ./manage.py runserver
```
Test the webserver by pointing your browser at http://127.0.0.1:8000 or http://localhost:8000.

The webserver is independent of runpipeline and you can use the website while the pipeline commands are running.

Running a pipeline run via the web server¶

It is possible to launch the processing of a pipeline run by using the relevant option on the pipeline run detail page. This uses DjangoQ to schedule and process the runs and a cluster needs to be set up in order for the runs to process:

Check the Q_CLUSTER options in ./webinterface/settings.py. Refer to the DjangoQ docs if you are unsure on the meaning of any parameters.
Launch the cluster using the following command, making sure you are in the pipeline environment:
```
(pipeline_env)$ ./manage.py qcluster
```

If the pipeline is updated then the qcluster also needs to be be restarted. A warning that if you submit jobs before the cluster is set up, or is taken down, then these jobs will begin immediately once the cluster is back online.