If you would like to contribute to the development of the Placement service and have never developed for an offical OpenStack project before, you must follow the steps in this page to perform required setup: https://docs.openstack.org/infra/manual/developers.html Once those steps have been completed, changes to OpenStack may be submitted for review via the Gerrit tool, following the workflow documented at: https://docs.openstack.org/infra/manual/developers.html#development-workflow There is a growing suite of documentation for Placement contributors published at: https://docs.openstack.org/placement/latest/contributor/index.html Note that OpenStack does not use GitHub. Pull requests and issues submitted there will not be seen. Bugs should be filed on StoryBoard: https://storyboard.openstack.org/#!/project/openstack/placement