On Oct 16, 2014 3:57 PM, "Kevin Fenzi" <kevin@scrye.com> wrote:
>
> On Thu, 16 Oct 2014 18:04:45 -0400
> Colin Walters <walters@verbum.org> wrote:
>
> > On Fri, Oct 10, 2014, at 01:51 PM, Kevin Fenzi wrote:
> >
> > > impossible:·
> > >
> > > These are ones where it's not really possible to move the current
> > > thing to 7, and we are waiting for the next major version.
> > >
> > > bodhi* (bodhi1)
> > > collab* (mailman2)
> > > hosted-lists* (mailman2)
> > > mirrorlists (mirrormanager)
> > > releng* (bodhi1)
> > > sundries* (mirrormanager)
> >
> > Have you looked at containerizing at all?  That would allow you to
> > keep the apps in RHEL6 containers, as was just announced:
> > http://rhelblog.redhat.com/2014/10/14/run-red-hat-enterprise-linux-6-applications-on-red-hat-enterprise-linux-7/
> > While moving the hosts forward, thus taking advantage of a more modern
> > kernel and userspace management tools.
>
> No, but containers could well be very handy for a number of things for
> us down the road. Just will take someone investigating and figuring out
> how we can use them.
>

I've recently taken a look at socket as part of working at ansible.  It should definitely be possible to do this (and even to use ansible playbooks to partially provision/configure the containers.  However you would need to have someone updating the images periodically just like you presently need to update the virtual machines you maintain.

It would probably be best to have the whole sysadmin team become somewhat versed in docker usage (to the same extent as they're aware of virtual machines at least).  There isn't a whole lot to learn for basic proficiency, though, so this wouldn't take too long.  If you don't want to train everyone, having a docker czar and a couple helpers would be enough to actually do the work.

-Toshio

> In the case of the above, we are actively replacing all those things
> with newer things, so we can move them when those are done...
>
> Mirrormanager3, mailman3, bodhi2, etc.
>
> kevin
>
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