[PVE-User] Multi Proxmox Cluster with common Ceph cluster

Fabrizio Cuseo f.cuseo at panservice.it
Mon Dec 28 09:26:02 CET 2015


Hello. 
Which kind of async mirror do you use between clusters ? 

----- Il 26-dic-15, alle 18:20, Franck Parisy <franck at parisy.net> ha scritto: 

> 2 DCs, 1 Proxmox and ceph cluster by DC and async mirror between them... What
> else !

> I love Proxmox and Ceph !

> Merry Christmas everybody

> De: "Alexandre DERUMIER" <aderumier at odiso.com>
> À: "proxmoxve" <pve-user at pve.proxmox.com>
> Envoyé: Samedi 26 Décembre 2015 16:24:55
> Objet: Re: [PVE-User] Multi Proxmox Cluster with common Ceph cluster

> >>will wait jewel, it leaves me time to negociate a third DC ;-)

> Note, that with jewell, you don't need a third DC.

> you can build 2 ceph cluster, 1 on each dc, then do async mirror between them.
> (each ceph cluster is the backup of the other one)

> >>Will it be possible to manage a multi dc's ceph cluster with Proxmox ?

> Yes it's possible, if you have multicast (laybe2) working between them.

> Simply do 1 ceph cluster/ 1 proxmox cluster.
> But you need 3 DC to be sure to always have quorum (for proxmox and ceph
> monitor)

> ----- Mail original -----
> De: "Franck Parisy" <franck at parisy.net>
> À: "proxmoxve" <pve-user at pve.proxmox.com>
> Envoyé: Vendredi 25 Décembre 2015 19:11:43
> Objet: Re: [PVE-User] Multi Proxmox Cluster with common Ceph cluster

> Thank you very much Alexandre.

> I will wait jewel, it leaves me time to negociate a third DC ;-)

> Will it be possible to manage a multi dc's ceph cluster with Proxmox ?

> De: "Alexandre DERUMIER" <aderumier at odiso.com>
> À: "proxmoxve" <pve-user at pve.proxmox.com>
> Envoyé: Vendredi 25 Décembre 2015 15:39:13
> Objet: Re: [PVE-User] Multi Proxmox Cluster with common Ceph cluster

> Hi,

> you can have 1 ceph cluster, with 2 pools, 1 pool for each proxmox cluster.

> But with only 2 DC, It's not possible to always have quorum if you loose 1 DC.

> (you need quorum for ceph monitors).

> So, for real multi datacenter ceph cluster, you need 3dc, with 1 mon on each DC
> .

> Also note that ceph replication is syncronous, so you need to have good
> latencies between your DC.

> Next ceph release (jewel), will have rbd mirroring (asyncronous mirroring of
> pool or rbd volume), to remote ceph
> cluster, for disaster recovery.

> ----- Mail original -----
> De: "Franck Parisy" <franck at parisy.net>
> À: "proxmoxve" <pve-user at pve.proxmox.com>
> Envoyé: Vendredi 25 Décembre 2015 12:26:32
> Objet: [PVE-User] Multi Proxmox Cluster with common Ceph cluster

> Hello,

> Is it posssible to create a multi Proxmox cluster with 1 Ceph cluster ?

> Explanation :

> 2 Datacenter

> D1 : 192.168.0.0/24
> D2 : 192.168.1.0/24

> 1 D1 Proxmox cluster
> 1 D2 Proxmox cluster

> 1 common Ceph cluster ( with a little crushmap to replicate D1 to D2 and D2 to
> D1) in the 2 Proxmox cluster

> Thanks

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-- 
--- 
Fabrizio Cuseo - mailto:f.cuseo at panservice.it 
Direzione Generale - Panservice InterNetWorking 
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Panservice e' associata AIIP - RIPE Local Registry 
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