If you have lots of CPU and memory it is completely doable.
If you're using lower specification hardware, it might be a little difficult.
-Tu
On Fri, May 6, 2016 at 7:11 AM David Turner <david.turner@xxxxxxxxxxxxxxxx> wrote:
There is potential for locking due to hung processes or such when you have OSDs on Mons. My test cluster has OSDS on Mons and it hasn't come across it, but I have heard of this happening in this mailing list. I don't think you would ever hear a recommendation for this in a production environment.
________________________________________
From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Dacre, Alex [Alex.Dacre@xxxxxxxxxx]
Sent: Friday, May 06, 2016 5:07 AM
To: Oliver Dzombic; ceph-users@xxxxxxxxxxxxxx
Subject: Re: Dual Role Nodes
That's good to know. My plan is to have three nodes initially; each with every role.
Thanks,
Alex
-----Original Message-----
From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Oliver Dzombic
Sent: 06 May 2016 12:06
To: ceph-users@xxxxxxxxxxxxxx
Subject: Re: Dual Role Nodes
Hi Alex,
thats no problem.
It might get harder to troubleshoot problems, because the serverressourced will be used for everything. Also you will have on the same node logs for every different service.
But in general, its no problem technically to have all ( Mon+Osd+MDS ) on one node.
--
Mit freundlichen Gruessen / Best regards
Oliver Dzombic
IP-Interactive
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Am 06.05.2016 um 13:00 schrieb Dacre, Alex:
> Hi,
>
>
>
> I'm looking at standing up a small Ceph cluster, but I'm curious as to
> what the general opinion is around having dual role nodes. E.g. each
> node is both an OSD and MON.
>
>
>
> Regards,
>
> Alex
>
>
>
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