You should have used separate pool name scemes for each OpenStack cluster..

________________________________
From: [email protected] <[email protected]>
Sent: Wednesday, January 29, 2020 12:29 PM
To: [email protected] <[email protected]>
Subject: [ceph-users] Re: Servicing multiple OpenStack clusters from the same 
Ceph cluster

Hello,
We have recently deployed that and it's working fine. We have deployed 
different keys for the different openstack clusters ofcourse and they are using 
the same cinder/nova/glance pools.

The only risk is if a client from one openstack cluster creates a volume and 
the id that will be generated ends up being the same on an existing volume from 
the other openstack cluster. But that's like possibility of 1 in 5 billion or 
something.
We took the risk.

Regards
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