Ceph backup over wan on another Ceph Cluster

abzsol

abzsol

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Sep 18, 2019
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Hi, i have a working cluster with ceph in a datacenter and i'm figuring out how to have a copy for disaster recovery an another datacenter using only SSH (so rbd mirror ruled out) so in caso of outage i can start vms on backup datacenter.

I've found some script using rbd export and rbd import.

I'd like to know if someone is already doing this and what script/ techniques is using.

Thanks
 
Alwin said:
Why is it ruled out? Only for the encryption?
Click to expand...
I've ruled out because if i understand correctly both cluster need to see each other, to be honest i don't understand if it use the proxmox management network or the ceph monitor network. clusters have different subnet and i need to setup a VPN also for ceph network and this means that ceph network need to have a gateway. it seems more complicated.
 
abzsol said:
I've ruled out because if i understand correctly both cluster need to see each other, to be honest i don't understand if it use the proxmox management network or the ceph monitor network.
Click to expand...
The rbd-mirror daemon needs to be able to reach both clusters on the Ceph public network.

abzsol said:
clusters have different subnet and i need to setup a VPN also for ceph network and this means that ceph network need to have a gateway.
Click to expand...
The rbd-mirror daemon doesn't need to be installed on the node itself, it could also be a VM or a host outside of the cluster. But yes, it needs transport encryption, in some way.
https://pve.proxmox.com/wiki/Ceph_RBD_Mirroring
 
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