Hey Ceph people,
need advise on how to move a ceph-cluster from one datacenter to another
without any downtime :)
DC 1:
3 dedicated MON-Server (also MGR on this Servers)
4 dedicated OSD-Server (3x12 OSD, 1x 23 OSDs)
3 Proxmox Nodes with connection to our Ceph-Storage (not managed from
proxmox! Ceph is a standalone installation)
DC 2:
No Ceph-related Server actualy
Luminous (12.2.4)
Only one Pool:
NAME ID USED %USED MAX AVAIL OBJECTS
rbd 0 30638G 63.89 17318G 16778324
I need to move my Ceph instalation from DC1 to DC2 and would realy be
happy if you could give me some advise on how to do this without any
downtime and in a still performant manner.
The latency from DC1 to DC2 is ~1,5ms - could perhaps bring up a 10GB
fiber connection between DC1 and DC2..
A second Ceph-Cluster on DC2 is for cost reasons not possible but i
could bring a 5th OSD Server Online there.
So "RBD-Mirror" isn't actualy passable way - but i will try to make this
possible ^^ ...
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