Re: Mourning the demise of mkcephfs

[Wido den Hollander <wido@42on.com>]

On 11/11/2013 06:51 PM, Dave (Bob) wrote:
> The utility mkcephfs seemed to work, it was very simple to use and
> apparently effective.
>
> It has been deprecated in favour of something called ceph-deploy, which
> does not work for me.
>
> I've ignored the deprecation messages until now, but in going from 70 to
> 72 I find that mkcephfs has finally gone.
>
> I have tried ceph-deploy, and it seems to be tied in to specific
> 'distributions' in some way.
>
> It is unuseable for me at present, because it reports:
>
> [ceph_deploy][ERROR ] UnsupportedPlatform: Platform is not supported:
>
>
> I therefore need to go back to first principles, but the documentation
> seems to have dropped descriptions of driving ceph without smoke and
> mirrors.
>
> The direct approach may be more laborious, but at least it would not
> depend on anything except ceph itself.
>

I myself am not a very big fan of ceph-deploy as well. Most 
installations I do are done by bootstrapping the monitors and osds manually.

I have some homebrew scripts for this, but I mainly use Puppet to make 
sure all the packages and configuration is present on the nodes and 
afterwards it's just a matter of adding the OSDs and formatting their 
disks once.

The guide to bootstrapping a monitor: 
http://eu.ceph.com/docs/master/dev/mon-bootstrap/

When the monitor cluster is running you can start generating cephx keys 
for the OSDs and add them to the cluster: 
http://eu.ceph.com/docs/master/rados/operations/add-or-rm-osds/

I don't know if the docs are 100% correct. I've done this so many times 
that I do a lot of things without even reading the docs, so there might 
be a typo in it somewhere. If so, report it so it can be fixed.

Where I think that ceph-deploy works for a lot of people I fully 
understand that some people just want to manually bootstrap a Ceph 
cluster from scratch.

Wido

> Maybe I need to step back a version or two, set up my cluster with
> mkcephfs, then switch back to the latest to use it.
>
> I'll search the documentation again.
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-- 
Wido den Hollander
42on B.V.

Phone: +31 (0)20 700 9902
Skype: contact42on