Re: Recommended number of mons in a cluster

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Hi

You can deploy 3+2 or 3+5 mons, not 3+1

k
Sent from my iPhone

> On 28 Jun 2022, at 21:39, Vladimir Brik <vladimir.brik@xxxxxxxxxxxxxxxx> wrote:
> 
> Hello
> 
> I have a ceph cluster with 3 mon servers that resides at a facility that experiences significant outages once or twice a year. Is it possible mons will not be able to re-establish quorum or get corrupted after an outage if all of them go down uncleanly at about the same time?
> 
> I could set up 4 (it doesn't make sense to add fewer than 4, right?) extra mons running in VMs at a different facility. Is there a downside to running 7 mons? If a network partition occurs between the facilities can ceph be relied upon to recover gracefully once connectivity is restored?
> 
> 
> Thanks,
> 
> Vlad
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