[PVE-User] Ceph is the preferred proxmox shared storage?

Angel Docampo adocampo at dltec.net
Wed Oct 29 09:25:08 CET 2014


On 29/10/14 05:43, Lindsay Mathieson wrote:
> Sorry to keep coming back to this :( but we're adding a 3rd node to
> our cluster which brings ceph back into the picture ...
>
> Is there a particular reason that ceph is preferred to glusterfs?
> better performance? more fault tolerant?
Ceph provides block storage while Gluster doesn't, but the latest it's 
far easier to setup. As block storage, Ceph is faster than Gluster, but 
I have all my proxmox virtual environment with gluster running perfectly.

On its day, I relied on Gluster because it was a more mature product 
than Ceph, ready for production, but now I'm toying in a second cluster 
with Ceph because now it's becoming a mature product as well... both 
have pros and cons, and both are good, so I think there isn't a "winner" 
between them at the moment.
>
> Also - my third proxmox node is just a lightweight intel nuc for
> quorum - it won't be running VM's or contributing storage. Does the
> following setup make sense?
>
> Node1: OSD1 + Monitor
>
> Node2: OSD3 + Monitor
>
> Node1: Monitor Only
>
> Node1 & Node2 are connected via Dual Bonded 1GB Ethernet
>
> Node3 Only has 1GB Ethernet
>
Bonded interfaces on linux are active-backup, so you have a 1Gb 
connexion on the storage side. Consider to upgrade to a faster 
ethernet/fiberchannel/infiniband.

You will have no problems with your intel nuc as quorum node, I have a 
512MB RAM VM with 8GB HDD with debian and proxmox for that purpose.
-- 

	
*Angel Docampo
*
*Datalab Tecnologia, s.a.*
Castillejos, 352 - 08025 Barcelona
Tel. 93 476 69 14 - Ext: 706
Mob. 670.299.381

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