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Object Storage is configured using the /etc/openstack_deploy/conf.d/swift.yml file and the /etc/openstack_deploy/user_variables.yml file.
The group variables in the /etc/openstack_deploy/conf.d/swift.yml file are used by the Ansible playbooks when installing Object Storage. Some variables cannot be changed after they are set, while some changes require re-running the playbooks. The values in the swift_hosts section supersede values in the swift section.
To view the configuration files, including information about which variables are required and which are optional, see Appendix A, *OSA configuration files*.