Am 03.07.20 um 10:00 schrieb Sebastian Wagner:


Am 02.07.20 um 19:57 schrieb Oliver Freyermuth:
Dear Cephalopodians,

as we all know, ceph-deploy is on its demise since a while and essentially in 
"maintenance mode".

We've been eyeing the "ssh orchestrator" which was in Nautilus as the "successor in 
spirit" of ceph-deploy.
While we have not tried it out just yet, I find this module seems to be gone 
without a trace in Octopus.
There's still an Orchestrator module, but this seems to work "only" with 
containers.

Is this true, or is there still an SSH orchestrator capable of bare-metal 
operation in Octopus (or are there plans to have something like this)?

While I see many advantages of containers in many areas, and certainly also for 
smaller setups or test setups with Ceph,
as any technology, they come with their own problems.
Example issues (which all can be solved, but require extra work from the 
administrator) are:
- Operation on machines without connectivity to the internet (you'd need to 
mirror the containers or run your own registry),
- Ensuring automated security updates both outside the containers and inside 
the containers, or re-pull them regularly (and monitor that),
- Integrate with existing logging and configuration management systems,
- Potential hardware issues, such das InfiniBand RDMA.

There's surely more (and there are also as many benefits), and as I said, all 
can be solved; the point I want to make is:
Containers are not the best solution in all environments and also not for all 
admins.

So my question is: Is there something like the SSH orchestrator still available?
I guess essentially the cephadm orchestrator does something similar behind the 
screnes, with the added bells and whistles to manage the containers.
Of course, a reduced feature-set would be expected (e.g. no "ceph orch 
upgrade"), but it would jump into the hole ceph-deploy has left.

we're renamed the SSH orchestrator into cephadm. See

https://github.com/ceph/ceph/pull/32193 for the
corresponding pull request.

Thanks, that explains where it went :-).
However, from the linked PR, it seems also the SSH orchestrator was using 
containers behind the scenes (it just was not clarified in the docs of good old 
Nautilus).

So my main question remains — is there a successor in spirit to ceph-deploy for 
those who'd prefer to run bare-metal
(containers are an answer to many problems, but not all, and they bring their 
own)?

Cheers,
        Oliver


Hope that helps,

Sebastian



Maybe this is as easy as setting a configuration knob? Or is it also possible to switch 
to a "bare-metal edition" of cephadm (which might rely on users
or existing configuration management to install the packages, e.g.)?

Cheers,
        Oliver


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