The quickest way to get a Ceph cluster up and running is to follow the Getting Started guides.
These guides will show you how to build a working cluster, deploy gateways, and configure clients.
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If you want to provide a public mirror for other users of Ceph you can opt to become a official mirror.
To make sure all mirrors meet the same standards some requirements have been set for all mirrors. These can be found on Github.
If you want to apply for an official mirror, please contact the ceph-users mailing list.