[rdo-users] Status of RDO Trunk Ussuri on CentOS 7 and transition to CentOS 8

[Alfredo Moralejo Alonso]

Hi,

Note that all pins related to python2 support removal have been removed
from RDO Trunk master (Ussuri) today [1].

What that means for RDO users?

- Some packages are now failing to build in
https://trunk.rdoproject.org/centos7-master/report.html, this
centos7-master RDO Trunk repo will not be consistent again and it's
recommended that anyone using RDO Trunk for master/Ussuri in CentOS 7 to
move to CentOS 8 equivalent.
- Now RDO Trunk repo for CentOS 8 in master
https://trunk.rdoproject.org/centos8-master/report.html is consistent and
following master branch or using versions defined in upper-constraints [2].
- Content in promoted repositories previously both for CentOS 7 and 8
should be unaffected by this change.
- There are still two projects still pinned (mistral and neutron) for other
unrelated issues, we'll keep working to get them unpinned as soon as
possible.
- This change has no impact in stable releases.

Please, let us know if you have any question or issue related to this.

Best regards,

Alfredo

[1]
https://review.rdoproject.org/r/#/q/topic:unpin-py2+(status:open+OR+status:merged)
[2]
https://github.com/openstack/requirements/blob/master/upper-constraints.txt


On Thu, Feb 20, 2020 at 3:03 PM Alfredo Moralejo Alonso <amoralej at redhat.com>
wrote:

>
> Hi,
>
> I'd like to open a discussion about the status of RDO Ussuri repositories
> on CentOS7.
>
> As you know RDO and upstream teams (kolla, puppet-openstack, TripleO,
> TripleO CI, etc...) have been working to switch to CentOS8 during last few
> weeks.
>
> In order to make the transition easier from CentOS 7 to CentOS 8, RDO is
> still maintaining Trunk repos consistent for both CentOS 7/Python 2 and
> CentOS 8/Python 3. As OpenStack projects have been dropping support for P
> ython 2, we've started pinning them to the last commit working with Python
> 2[1], we were expecting that transition will finish soon but it's still
> going on. Over time, the number of pinned packages has been growing
> including services and Oslo libraries where we can't follow
> upper-constraints anymore[2]. Recently, Kolla has removed support for
> CentOS 7 so i doubt it makes sense to keep pinning packages to keep RDO
> Trunk consistent artificially and continue running promotion pipelines on a
> repo with so many outdated packages. Also, pinning these projects makes
> that changes needed for CentOS 8 will not be in RDO and would need to be
> backported manually to each package. My proposal is:
>
> - Unpin all packages in Ussuri to follow master trunk, or versions in u
> pper-constraints (for clients and libraries).
> - RDO Ussuri on CentOS 7 repo consistent link will not move anymore (so
> no more promotions based on it).
> - We will keep running centos7-master DLRN builder, so that packages
> still builing with Python 2 will be available in current repo [3] to be
> used by teams needing them until migration to CentOS 8 is finished
> everywhere.
> - Projects which already have CentOS 8 jobs gating in master branch can
> remove CentOS 7 ones.
>
> We understand this can add some pressure on moving to CentOS8 to the teams
> working on it, but I'd say it's already a priority and it's justified at
> this stage.
>
> What do you think about this plan?, is there any reason to keep CentOS 7
> artificially consistent and promoting at this point of the transition to
> CentOS 8?
>
> Best regards,
>
> Alfredo
>
> [1] https://review.rdoproject.org/r/#/q/topic:pin-py2
> [2] https://review.rdoproject.org/r/#/c/24796/
> [3] http://trunk.rdoproject.org/centos7-master/current
>
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