[openstack-dev] removing screen from devstack - RSN

John Griffith john.griffith8 at gmail.com
Thu Sep 7 17:34:44 UTC 2017


On Thu, Sep 7, 2017 at 11:29 AM, John Griffith <john.griffith8 at gmail.com>
wrote:

> Please don't, some of us have no issues with screen and use it extensively
> for debugging.  Unless there's a viable option using systemd I fail to
> understand why this is such a big deal.  I've been using devstack in screen
> for a long time without issue, and I still use rejoin that supposedly
> didn't work (without issue).
>
> I completely get the "run like customers" but in theory I'm not sure how
> screen makes it much different than what customers do, it's executing the
> same binary at the end of the day.  I'd also ask then is devstack no longer
> "dev" stack, but now a preferred method of install for running production
> clouds?  Anyway, I'd just ask to leave it as an option, unless there's
> equivalent options for things like using pdb etc.  It's annoying enough
> that we lost that capability for the API services, is there a possibility
> we can reconsider not allowing this an option?
>
> Thanks,
> John
>
> On Thu, Sep 7, 2017 at 7:31 AM, Davanum Srinivas <davanum at gmail.com>
> wrote:
>
>> w00t!
>>
>> On Thu, Sep 7, 2017 at 8:45 AM, Sean Dague <sean at dague.net> wrote:
>> > On 08/31/2017 06:27 AM, Sean Dague wrote:
>> >> The work that started last cycle to make devstack only have a single
>> >> execution mode, that was the same between automated QA and local, is
>> >> nearing it's completion.
>> >>
>> >> https://review.openstack.org/#/c/499186/ is the patch that will remove
>> >> screen from devstack (which was only left as a fall back for things
>> like
>> >> grenade during Pike). Tests are currently passing on all the gating
>> jobs
>> >> for it. And experimental looks mostly useful.
>> >>
>> >> The intent is to merge this in about a week (right before PTG). So, if
>> >> you have a complicated devstack plugin you think might be affected by
>> >> this (and were previously making jobs pretend to be grenade to keep
>> >> screen running), now is the time to run tests against this patch and
>> see
>> >> where things stand.
>> >
>> > This patch is in the gate and now merging, and with it devstack now has
>> > a single run mode, using systemd units, which is the same between test
>> > and development.
>> >
>> > Thanks to everyone helping with the transition!
>> >
>> >         -Sean
>> >
>> > --
>> > Sean Dague
>> > http://dague.net
>> >
>> > ____________________________________________________________
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>>
>>
>> --
>> Davanum Srinivas :: https://twitter.com/dims
>>
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>
> ​FWIW I realize my opinion doesn't count here particularly since this
already merged, BUT I also realize that it didn't count before it merged
either as the response I was given was "I don't use debuggers".  It's
unfortunate, perhaps I'm really the only one that has counter opinions on
things, or maybe nobody else wants to speak up, or maybe just nobody
cares.  Either way, it's a bit of a bummer and just another thing on the
list.  ​
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