The biggest downside that I've found is the log volume that mons create eats a lot of io. I was running mons on my OSDs previously, but in my current dpeloyment I've moved them to other hardware and noticed a perceptible load reduction on those nodes that were formerly running mons.
QH
On Thu, Jun 25, 2015 at 10:21 AM, Lazuardi Nasution <mrxlazuardin@xxxxxxxxx> wrote:
Hi,I'm looking for pros and cons of combining MON and OSD functionality on the same nodes. Mostly recommended configuration is to have dedicated, odd number MON nodes. What I'm thinking is more like single node deployment but consist more than one node, if we have 3 nodes we have 3 MONs with 3 OSDs. Since MON will only consume small resources, I think MON load will not degrade OSD performance significantly. If we have odd number of nodes, we can still maintain the quorum of MON with this way. Any idea?Best regards,
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