Re: Understanding what ceph-volume does, with bootstrap-osd/ceph.keyring, tmpfs - ceph-users

22 Sep 2020

At least ceph thought you the essence of doing first proper testing ;) 
Because if you test your use case you either get a positive or negative 
result and not a problem. 
However I do have to admit that ceph could be more transparent with 
publishing testing and performance results. I have already discussed 
this with them on such a ceph day. It does not make sense to have to do 
everything yourself eg the luks overhead and putting the db/wal on ssd, 
rbd performance on hdds etc. Those can quickly show if ceph can be a 
candidate or not.

-----Original Message-----
From: Kevin Myers [mailto:response@ifastnet.com] 
Cc: Janne Johansson; Marc Roos; ceph-devel; ceph-users
Subject: Re: [ceph-users] Re: Understanding what ceph-volume does, with 
bootstrap-osd/ceph.keyring, tmpfs

Tbh ceph caused us more problems than it tried to fix ymmv good luck

...
  On 22 Sep 2020, at 13:04, tri(a)postix.net wrote:

 The key is stored in the ceph cluster config db. It can be retrieved  
...
  by

 KEY=`/usr/bin/ceph --cluster ceph --name 
 client.osd-lockbox.${OSD_FSID} --keyring $OSD_PATH/lockbox.keyring 
 config-key get dm-crypt/osd/$OSD_FSID/luks`

 September 22, 2020 2:25 AM, "Janne Johansson" &lt;icepic.dz(a)gmail.com&gt; 
wrote:
...

> Den mån 21 sep. 2020 kl 16:15 skrev Marc Roos 
&lt;M.Roos(a)f1-outsourcing.eu&gt;eu>:
...
 > 
>> When I create a new encrypted osd with ceph volume[1]
>> 
>> Q4: Where is this luks passphrase stored?
> 
> I think the OSD asks the mon for it after auth:ing, so "in the mon 
DBs"
...
   somewhere.

 --
 May the most significant bit of your life be positive.
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