On Tue, Oct 25, 2016 at 2:07 PM, Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> wrote:
Hello.
25.10.2016 10:08, Maxence Sartiaux wrote:
I need to migrate a old 2 node cluster to a proxmox cluster with a
replicated gluster storage between those two (and a third arbitrer
node).
Id like to create a volume with a single node, migrate the data on
this volume from the old server and then reinstall the second server
and add the second brick to the volume.
If you have only 2 nodes in total, you may lower replica to replica 1, reinstall another node, re-add bricks to form replica 2 and repeat these steps for another node. No downtime and data migration by hands needed.
Just want to let you guys know that Kevin had bad experience doing add-bricks when VMs are online. We are still not able to recreate this bug. So I would advise you to do an offline migration for now.
I found no informations about creating a replicated volume with a
single node, is it possible ?
Yes, with "force" option, if you really need that.
Also is it possible to add a third arbitrary node to an existing 2
replica volume ?
Yes, starting from v3.8.
Regards,
Oleksandr
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Pranith
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