Well, can you please clarify what exactly key I must to use? Do I need to get/generate it somehow from working cluster?
On Wed, Mar 20, 2013 at 7:41 PM, Greg Farnum <greg@xxxxxxxxxxx> wrote:
The MDS doesn't have any local state. You just need start up the daemon somewhere with a name and key that are known to the cluster (these can be different from or the same as the one that existed on the dead node; doesn't matter!).
-Greg
Software Engineer #42 @ http://inktank.com | http://ceph.com
On Wednesday, March 20, 2013 at 10:40 AM, Igor Laskovy wrote:
> Actually, I already have recovered OSDs and MON daemon back to the cluster according to http://ceph.com/docs/master/rados/operations/add-or-rm-osds/ and http://ceph.com/docs/master/rados/operations/add-or-rm-mons/ .
>
> But doc has missed info about removing/add MDS.
> How I can recovery MDS daemon for failed node?
>
>
>
> On Wed, Mar 20, 2013 at 3:23 PM, Dave (Bob) <dave@xxxxxxxxxxxxxxxxxx (mailto:dave@xxxxxxxxxxxxxxxxxx)> wrote:> > ceph-users@xxxxxxxxxxxxxx (mailto:ceph-users@xxxxxxxxxxxxxx)
> > Igor,
> >
> > I am sure that I'm right in saying that you just have to create a new
> > filesystem (btrfs?) on the new block device, mount it, and then
> > initialise the osd with:
> >
> > ceph-osd -i <the osd number> --mkfs
> >
> > Then you can start the osd with:
> >
> > ceph-osd -i <the osd number>
> >
> > Since you are replacing an osd that already existed, the cluster knows
> > about it, and there is a key for it that is known.
> >
> > I don't claim any great expertise, but this is what I've been doing, and
> > the cluster seems to adopt the new osd and sort everything out.
> >
> > David
> > _______________________________________________
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> facebook.com/igor.laskovy (http://facebook.com/igor.laskovy)
> Kiev, Ukraine
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Igor Laskovy
facebook.com/igor.laskovy
Kiev, Ukraine
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