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.
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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