[openstack-dev] removing screen from devstack - RSN

John Griffith john.griffith8 at gmail.com
Thu Sep 7 17:29:22 UTC 2017

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?


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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