Re: [ceph-commit] teuthology value error

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On Tue, Oct 2, 2012 at 9:56 AM, Gregory Farnum <greg@xxxxxxxxxxx> wrote:
>> File "/home/lokesh/Downloads/ceph-teuthology-78b7b02/teuthology/misc.py",
>> line 501, in read_config
>> ctx.teuthology_config.update(new)
>> ValueError: dictionary update sequence element #0 has length 1; 2 is
>> required
> I haven't looked at teuthology much in a while, but the error is
> complaining that you have a list of length 1 that requires length 2.
> I'm pretty sure your problem is that you only have one machine
> available, but the default Ceph task wants 2.

Actually, that error seems to be bubbling up from where it reads
~/.teuthology.yaml -- it expects a file like this:

lock_server: http://foo.example.com/locker/lock
queue_host: bar.example.com
queue_port: 1234

Teuthology doesn't have much in the way of data format enforcement --
it kind of assumes the target audience is programmers, so they can
just dig in.

> Rather more importantly than that, teuthology is a piece of our
> internal infrastructure. We make it available to others, but if you
> plan to use it in your own testing you will need infrastructure of
> your own to run it on — we have a generic server farm, but also
> "special" machines like a lock server, in addition to the client
> actually running the test. You should not play with it casually.

Hey, I resent that remark!

We *want* outside users for teuthology. That would be awesome.

That would probably also mean needing to split the current "tasks" out
of the teuthology core, so that the core becomes a general-purpose
multi-machine test runner.

But you are correct in that there are a lot of assumptions about the
environment in there. Tread carefully.
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