Documentation is being generated on labs slave by some -publish jobs. They rsync the generated documentation on integration-doc-publish.eqiad.Wmflabs and then trigger a run of the 'publish-doc' job which is tied on gallium and rsync from the labs instance.
The relevant JJB macro is 'push-doc' in doc.yaml.
That process needs to be documented on the wiki.
Version: wmf-deployment
Severity: enhancement