[Beowulf] cluster deployment and config management

[Lachlan Musicman]

Sure am!

Re scale, I can't speak to that because we just don't have that size. But
Ansible has been bought/absorbed into Redhat now, so the Ansible Tower
infrastructure may scale. You would need to test :)

cheers
L.

------
"The antidote to apocalypticism is *apocalyptic civics*. Apocalyptic civics
is the insistence that we cannot ignore the truth, nor should we panic
about it. It is a shared consciousness that our institutions have failed
and our ecosystem is collapsing, yet we are still here — and we are
creative agents who can shape our destinies. Apocalyptic civics is the
conviction that the only way out is through, and the only way through is
together. "

*Greg Bloom* @greggish
https://twitter.com/greggish/status/873177525903609857

On 5 September 2017 at 17:21, John Hearns via Beowulf <beowulf at beowulf.org>
wrote:

> Fusty?   Lachlan - you really are fromt he Western Isles aren't you?
>
> Another word:  'oose'  - the fluff which collects under the bed. Or inside
> servers.
>
> On 5 September 2017 at 08:57, Carsten Aulbert <carsten.aulbert at aei.mpg.de>
> wrote:
>
>> Hi
>>
>> On 09/05/17 08:43, Stu Midgley wrote:
>> > Interesting.  Ansible has come up a few times.
>> >
>> > Our largest cluster is 2000 KNL nodes and we are looking towards 10k...
>> > so it needs to scale well :)
>> >
>> We went with ansible at the end of 2015 until we hit a road block with
>> it not using a client daemon a fat ferew months. When having a few 1000
>> states to perform on each client, the lag for initiating the next state
>> centrally from the server was quite noticeable - in the end a single run
>> took more than half an hour without any changes (for a single host!).
>>
>> After that we re-evaluated with salt stack being the outcome scaling
>> well enough for our O(2500) clients.
>>
>> Note, I ave not tracked if and how ansible progressed over the past
>> ~2yrs which may or may not exhibit the same problems today.
>>
>> Cheers
>>
>> Carsten
>>
>> --
>> Dr. Carsten Aulbert, Max Planck Institute for Gravitational Physics,
>> Callinstraße 38, 30167 Hannover, Germany
>> Phone: +49 511 762 17185
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>
>
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