During previous OpenStack releases, projects using mongodb as backend (as telemetry or zaqar) have moved to other technologies for data persistence and mongo is not longer the default or preferred backend.

In this cycle (Queens), mongodb packages will be retired from RDO repositories under the assumption that users have implemented any of the alternatives for each affected service (or are in the process of doing it). This will happen in next weeks and will not affect previous releases.

If you have any question or you think that mongo should be maintained in RDO, please feel free to let us know in this thread or reach us in #rdo so that we can consider all implications of this decision.

Best regards,

Alfredo