Re: cluster network down

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Mon, 30 Sep 2019 14:49:48 +0200
Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> ==> ceph-users@xxxxxxxxxxxxxx :
> Hi,
> 
> On 9/30/19 2:46 PM, Lars Täuber wrote:
> > Hi!
> >
> > What happens when the cluster network goes down completely?
> > Is the cluster silently using the public network without interruption, or does the admin has to act?  
> 
> The cluster network is used for OSD heartbeats and backfilling/recovery 
> traffic. If the heartbeats do not work anymore, the OSDs will start to 
> report the other OSDs as down, resulting in a completely confused cluster...
> 
> 
> I would avoid an extra cluster network unless it is absolutely necessary.
> 
> 
> Regards,
> 
> Burkhard

I don't remember where I read it, but it was told that the cluster is migrating its complete traffic over to the public network when the cluster networks goes down. So this seems not to be the case?

Thanks
Lars
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