[jira] [Created] (AIRFLOW-571) allow gunicorn config to be passed to airflow webserver

["Dennis O'Brien (JIRA)" <ji...@apache.org>]

Dennis O'Brien created AIRFLOW-571:
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             Summary: allow gunicorn config to be passed to airflow webserver
                 Key: AIRFLOW-571
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-571
             Project: Apache Airflow
          Issue Type: Improvement
          Components: webserver
            Reporter: Dennis O'Brien


I have run into an issue when running airflow webserver behind a load balancer where redirects result in https requests forwarded to http.  I ran into a similar issue with Caravel which also uses gunicorn.  https://github.com/airbnb/caravel/issues/978  From that issue:

{quote}
When gunicorn is run on a different machine from the load balancer (nginx or ELB), it needs to be told explicitly to trust the X-Forwarded-* headers sent. gunicorn takes an option --forwarded-allow-ips which can either be a comma separated list of ip addresses, or "*" to trust all.
{quote}

I don't see a simple way to inject custom arguments to the gunicorn call in `webserver()`.  Rather than making a special case to set --forwarded-allow-ips, it would be nice if the caller of `airflow webserver` could pass an additional gunicorn config file.

The call to gunicorn is already including a -c and I'm not sure gunicorn will take multiple configs, so maybe we have to parse the config and include each name=value on the gunicorn command line.  Any suggestions on how best to allow this?




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