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On Tue, Dec 15, 2020 at 8:56 PM Thomas Goirand <zigo at debian.org> wrote:

> On 12/15/20 5:08 PM, Dmitry Tantsur wrote:
> > Hi wonderful ironicers!
> >
> > Unless you spend the whole last week under a rock (good for you - I mean
> > it!), you must be already aware that the classical CentOS as we know it
> > is going away in favour of CentOS Stream, and maybe as soon as in the
> > end of 2021!
> >
> > For us it means two things:
> > 1) Bifrost will test with CentOS Stream, which may not 100% match the
> > current stable RHEL.
> > 2) We need to decide what to do with our published DIB images [1],
> > currently based on CentOS 8.
> >
> > I'd like to concentrate on problem #2.
> >
> > We have conducted an experiment of switching to CentOS Stream, and it
> > did not go so well. The image size has increased from ~ 340 MiB to
> > nearly 450 MiB, causing serious issues in CI jobs using it. Because of
> > this we're reverting the switch and considering other options.
> >
> > One is to figure out what causes the size increase and remove packages
> > or manually delete files. We're already doing it quite intensively, so I
> > expect this option to be time-consuming. We'll probably have to repeat
> > this exercise regularly to keep up with the distribution changes.
> >
> > The other option is to switch to another distro. Debian looks promising
> > in this context: 3 years of support and the image size is just 273 MiB.
> > I have a patch [2] up for people who want to try the resulting image on
> > their bare metal machines.
> >
> > What do you think? Are there any concerns with either option?
> >
> > [1] https://tarballs.openstack.org/ironic-python-agent/dib/files/
> > <https://tarballs.openstack.org/ironic-python-agent/dib/files/>
> > [2]
> >
> https://review.opendev.org/c/openstack/ironic-python-agent-builder/+/767158
> > <
> https://review.opendev.org/c/openstack/ironic-python-agent-builder/+/767158
> >
>
> Hi Dmitry!
>
> I wonder what Debian image you've been using. Have you tried one of the
> daily image that the Debian Cloud Image Team prepares? [1]
>

Hi Thomas,

We're using diskimage-builder, which, I think, uses debootstrap. This
matches our requirements pretty well since we need as small images as it is
possible.


>
> If you choose the Debian path, you have all of my support, and I'll try
> to help as much as I can.
>

Thank you!

Dmitry


>
> Cheers,
>
> Thomas Goirand (zigo)
>
> [1] http://cdimage.debian.org/cdimage/cloud/ and look for the "generic"
> images, which should work for Ironic.
>
>

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