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[brucexx]

We are currently using ceph with our PVE and everything works great. However is there / is anybody using an HA solution that would work immediately and keep mirroring the VMs in real time (DRBD) and once one VM is down the other one kiks in , preferably preserving all sessions ?

I think it can be done on VMware so it can be done. Is the DRBD9 the answer ? I remember it was removed from Proxmox due to licensing but can still be used, is anybody successfully using it ?

Thank you

 

[spirit]

DRBD is not the answer. you have already storage replication with ceph.

you can already use proxmox HA to restart a vm if 1 host goes down, but you'll loose your sessions.


what you need, is something to do constant vm memory replication between 2 hosts.

it's called COLO in qemu world, stable since 2.9 but not yet complete. (maybe 2.10)

https://github.com/qemu/qemu/blob/master/docs/COLO-FT.txt

Not yet implemented in proxmox.

 

[brucexx]

Thank you for sharing, looks promising. I will keep an eye on it (or two eyes...)

Did you try it in test environment ? ...or when you say not yet complete it means that it simply does not work yet.