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https://issues.apache.org/jira/browse/AIRFLOW-876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924956#comment-15924956
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Bolke de Bruin commented on AIRFLOW-876:
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PR welcome on documentation
> Change or document default gunicorn worker class
> ------------------------------------------------
>
> Key: AIRFLOW-876
> URL: https://issues.apache.org/jira/browse/AIRFLOW-876
> Project: Apache Airflow
> Issue Type: Improvement
> Reporter: Peter Marton
> Priority: Minor
>
> The sync gunicorn worker class is not production ready unless behind a proxy
> like nginx. This is clearly documented in the gunicorn docs, but never
> mentioned anywhere in the Airflow docs. I feel that either the default should
> be changed to one of the asynchronous models or users should be adequately
> warned.
> What makes this even more painful is that AWS ELB tries to keep open the
> connections for health checks, essentially DOSing the Airflow webserver if
> used with the default config. But it happens with Chrome's URL preloading as
> well as mentioned in the link below.
> More info:
> https://www.mail-archive.com/[email protected]/msg00746.html
> http://stackoverflow.com/questions/21634680/running-unicorn-behind-amazon-elb
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