Ceph Node Maintenance with Least Rebalance?

[devinacosta]

I have a Proxmox cluster that I am looking at, that they need me to redo the server cause they have asked to have more disks added and the OS disk moved to another disk on the box. I would like if possible to just take the Server down, reinstall the OS onto the new disk, and then bring the disks back into the cluster without causing a big Rebalance. The last server my co-worker took the server out, zapped the disks, and all the OSDs had to rebuild and rebalance which wasn't nice.

Is there a good way to do this with least impact?

 

[spirit]

for osds, no problem, you can simply unplug/replug them on a server where ceph-osd package is installed and ceph package is installed, and it's works out of the box.
can be a server with a different ip.

to avoid rebalance during the reinstall, you can set "no out" in ceph gui.


only reinstall the ceph mon is tricky.