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On 12/16/20 11:35 AM, Dmitry Tantsur wrote:
> 
> 
> On Tue, Dec 15, 2020 at 8:56 PM Thomas Goirand <zigo at debian.org
> <mailto: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/>
>     > <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>
>     >
>     <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

Hi Dmitry,

Could you please have a quick try with the official "Generic" image from
the Debian team? Best maybe would be to try this one:

http://cdimage.debian.org/cdimage/cloud/bullseye/daily/20201216-486/debian-11-generic-amd64-daily-20201216-486.qcow2

Indeed, I would very much like to be able to validate the image works
for Ironic.

Cheers,

Thomas Goirand (zigo)