Re: Replacing an mds server

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> Op 24 januari 2017 om 22:08 schreef Goncalo Borges <goncalo.borges@xxxxxxxxxxxxx>:
> 
> 
> Hi Jorge
> Indeed my advice is to configure your high memory mds as a standby mds. Once you restart the service in the low memory mds, the standby one should take over without downtime and the first one becomes the standby one.

Yes, you can clear the old one afterwards.

Don't forget to remove the cephx key with 'ceph auth del' of that MDS afterwards.

Wido

> Cheers
> Goncalo
> ________________________________________
> From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Alex Evonosky [alex.evonosky@xxxxxxxxx]
> Sent: 25 January 2017 07:00
> To: Jorge Garcia
> Cc: Users, Ceph
> Subject: Re:  Replacing an mds server
> 
> just my own experience on this---
> 
> I have two MDS servers running (since I run cephFS).  I have the config dictating both MDS servers in the ceph.conf file.
> 
> When I issue a "ceph -s"  I see the following:
> 
>  1/1/1 up {0=alpha=up:active}, 1 up:standby
> 
> 
> I have shut one MDS server down (current active) and the alternate server becomes active.
> 
> 
> This is just an FYI, but others may have a better answer...
> 
> 
> 
> 
> On Tue, Jan 24, 2017 at 2:56 PM, Jorge Garcia <jgarcia@xxxxxxxxxxxx<mailto:jgarcia@xxxxxxxxxxxx>> wrote:
> I have been using a ceph-mds server that has low memory. I want to replace it with a new system that has a lot more memory. How does one go about replacing the ceph-mds server? I looked at the documentation, figuring I could remove the current metadata server and add the new one, but the remove metadata server section just says "Coming soon...". The same page also has a warning about running multiple metadata servers. So am I stuck?
> 
> Thanks!
> 
> Jorge
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