> On Nov 18, 2025, at 8:12 AM, Albert Shih <[email protected]> wrote:
> 
> Le 18/11/2025 à 07:53:48-0500, Anthony D'Atri a écrit
> Hi,
> 
>> 
>> # ceph fsid
>> 44928f74-thx-1138-8862-d96497f06d07
> 
> Well, if I don't have the file the commande don't work
> 
> root@ceph:~# ceph fsid
> Error initializing cluster client: ObjectNotFound('RADOS object not found 
> (error calling conf_read_file)')
> root@ceph:~#
> 

You do need the conf file to point to the mons.

>> 
>> Or you could define a custom facter fact...
> 
> It's indeed what I'm doing with my puppet, but I need to known how to get
> that info.
> 
> Currently I have the facter running to get the fsid so I can use it in my
> puppet module, but the facter doesn't return anything when I don't have the
> file. That's why I'm thinking to create a cron with
> 
>  rsync /etc/ceph/ceph.conf other_nodes:/etc/ceph
> 
> on the master node.
> 
> 
>> 
>> Just sayin...
>> 
>> 
>> ... that said, before Mimic brought us the central config db, maintaining 
>> <clustername>.conf across clusters was a pain. When testing or 
>> troubleshooting one would need to persist changes across all nodes, and in 
>> the heat of an escalation it was all too easy to forget to persist changes.  
>> Even with the file templated in automation, consider what happens when an 
>> important change happens while one or more nodes is down ... then it comes 
>> back up.
> 
> No doubt but my question is what happens if I put the ceph.conf, can be any
> unexpected side effect.
> 
> Regards.
> 
> 
>> 
>>> On Nov 18, 2025, at 4:41 AM, Albert Shih <[email protected]> wrote:
>>> 
>>> Hi,
>>> 
>>> 
>>> Just like to know if it's a bad idea (like something going to bite me in
>>> few year) to have a copy of the /etc/ceph/ceph.conf from the master copy on
>>> every node of the cluster (install with cephadm).
>>> 
>>> I «need» the ceph.conf to able to get the fsid on every node.
>>> 
> 
> --
> Albert SHIH 🦫 🐸
> France
> Heure locale/Local time:
> mar. 18 nov. 2025 14:02:38 CET
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