What is needed to mock build for rhel+epel on Fedora?

[Barry Scott]

What do I need to setup to allow mock to build for rhel+epel on Fedora?

I'm getting this error:

$ mock -r rhel+epel-8-x86_64 --print-root
ERROR: /etc/pki/entitlement is not a directory is subscription-manager installed?

Barry

[Todd Zullinger]

Barry Scott wrote:
> What do I need to setup to allow mock to build for rhel+epel on Fedora?
>
> I'm getting this error:
>
> $ mock -r rhel+epel-8-x86_64 --print-root
> ERROR: /etc/pki/entitlement is not a directory is subscription-manager installed?

I haven't tried building against RHEL in mock, so I don't
have any particular insights nor first-hand experience.

But I guess the first question is, do you have that package
(subscription-manager) installed on the host?

Have you read

https://rpm-software-management.github.io/mock/Feature-rhelchroots

?

https://pavel.raiskup.cz/blog/fedora-builders-for-rhel.html
may also have some useful tips.  If nothing else, it seems
to confirm that COPR is using Fedora hosts with RHEL+EPEL
chroots.

[Todd Zullinger]

I wrote:
> Barry Scott wrote:
> > What do I need to setup to allow mock to build for rhel+epel on Fedora?
> >
> > I'm getting this error:
> >
> > $ mock -r rhel+epel-8-x86_64 --print-root
> > ERROR: /etc/pki/entitlement is not a directory is subscription-manager installed?
>
> I haven't tried building against RHEL in mock, so I don't
> have any particular insights nor first-hand experience.

Now I do have basic, first-hand experience.  I followed the
steps in the 'Feature-rhelchroots' URL below and starting a
RHEL chroot worked nicely.
> https://rpm-software-management.github.io/mock/Feature-rhelchroots

Hopefully that works well for you too.

[Richard Shaw]

On Mon, Mar 13, 2023 at 12:00 PM Barry Scott  wrote:
> What do I need to setup to allow mock to build for rhel+epel on Fedora?
>
> I'm getting this error:
>
> $ mock -r rhel+epel-8-x86_64 --print-root
> ERROR: /etc/pki/entitlement is not a directory is subscription-manager
> installed?

Does it have to be RHEL? I've used Alma and Rocky with success.

Thanks,
Richard

[Barry Scott]

> On 13 Mar 2023, at 20:15, Richard Shaw  wrote:
>
> On Mon, Mar 13, 2023 at 12:00 PM Barry Scott <[e-mail] > wrote:
> > What do I need to setup to allow mock to build for rhel+epel on Fedora?
> >
> > I'm getting this error:
> >
> > $ mock -r rhel+epel-8-x86_64 --print-root
> > ERROR: /etc/pki/entitlement is not a directory is subscription-manager installed?
>
> Does it have to be RHEL? I've used Alma and Rocky with success.

Good question.

If I build for Alma or Rocky will it install on RHEL, Centos, Oracle Linux etc?

I picked RHEL as all the others aim to be ABI compatible with it.
Is the reverse necessarily true?

I'm going to try out the suggest in the next or so when I get free to for my project.

Barry
> Thanks,
> Richard 
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[murph nj]

> On Mon, Mar 13, 2023 at 12:00 PM Barry Scott 
> wrote:
> > What do I need to setup to allow mock to build for rhel+epel on Fedora?
> >
> > I'm getting this error:
> >
> > $ mock -r rhel+epel-8-x86_64 --print-root
> > ERROR: /etc/pki/entitlement is not a directory is subscription-manager
> > installed?

You could also get a developer subscription for RHEL if you like.  16
devices for free. (IIRC)

https://developers.redhat.com/

--murph

[Todd Zullinger]

Barry Scott wrote:
> > On 13 Mar 2023, at 20:15, Richard Shaw  wrote:
> > Does it have to be RHEL? I've used Alma and Rocky with success.
>
> Good question.
>
> If I build for Alma or Rocky will it install on RHEL,
> Centos, Oracle Linux etc?
>
> I picked RHEL as all the others aim to be ABI compatible
> with it.  Is the reverse necessarily true?

Yes (in nearly all cases).

The main exception is during the (generally short) window of
time between a new RHEL release and the rebuilds catching
up.

This has been on the order of a day or three for point
releases and a week to a month or so for major releases.
The time has typically decreased as the projects get more
help, support, and continually improved tooling & build
systems.

If you don't have a strong reason to require or desire to
build against RHEL, building against a rebuild like Alma or
Rocky works just fine.  (I use Rocky Linux, both for mock
builds and for running servers.)