--- upgrade: - | Zuul no longer uses gearman. It is no longer required to run a Gearman server, and the Zuul scheduler no longer does so. All gearman-related settings in zuul.conf files are now ignored and may be removed. Commands such as `zuul enqueue` which were previously executed via Gearman may still be used by creating an authentication token and adding a `webclient` section to zuul.conf.