Re: Best plan for recovery if disk holding monitor data dies

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On Mon, 13 Feb 2012, Sage Weil wrote:
> On Mon, 13 Feb 2012, Mandell Degerness wrote:
> > What would you recommend as the best recovery strategy when the disk
> > holding the monitor data for a given monitor fails?
> > 
> > Should I recover from a periodic back up and re-start the monitor or
> > should I treat it as a new monitor being added to the cluster?  I
> > suspect the former, but i'd like confirmation.  Any information on
> > gotcha's would be useful as well.
> 
> The simplest is to treat is as a new addition.  

Just to clarify, you should re-add the "new" mon with the same name and IP 
as the one that failed.  The process is nearly identical, except that 
'newname' is 'oldname':

	http://ceph.newdream.net/docs/latest/ops/manage/grow/mon/

sage

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