Ceph backup over wan on another Ceph Cluster

[abzsol]

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]

using only SSH (so rbd mirror ruled out)

Why is it ruled out? Only for the encryption?

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

I suppose that the rbd-mirror would be more efficient than exporting snapshots.

 

[abzsol]

Why is it ruled out? Only for the encryption?

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.

 

[Alwin]

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.

The rbd-mirror daemon needs to be able to reach both clusters on the Ceph public 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.

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

 

[spirit]

Hi, we use rbd export|import at work

Here our inhouse tool (backup/restore from/to ceph cluster + proxmox api)

https://github.com/JackSlateur/backurne

 

[abzsol]

Hi, we use rbd export|import at work

Here our inhouse tool (backup/restore from/to ceph cluster + proxmox api)

https://github.com/JackSlateur/backurne

Thanks for your reply, i saw this on github before, but i didn't figure out how to make it working. I'll look into it again