Will the container image distros only limited to centos 8 based because of
that? Can ubuntu be reintroduced?
On Wed, Dec 18, 2019, 7:42 AM Alfredo Deza <adeza(a)redhat.com> wrote:
Another point to raise here is that Python3
dependencies that have
been made available for CentOS8 are impossible to meet for CentOS7.
There are a few reasons for this, but it is primarily because the
dependency requirements on many packages cannot be met in CentOS7. For
`pytest` package on CentOS7 is at version 2.7 and it comes from the
base repository. Other Python packages require pytest, but for Python3
they require a newer
version of pytest that supports it.
One of the packaging rules in CentOS (and EPEL) is that we can't
"bump" the version of a package that is already provided in base. This
is just one example, but if we can't
bump pytest, we can't even try to package the many other packages that
depend on it that are needed for Ceph.
In the case of CentOS8 we had to modify some packages like CherryPy
that was using the latest pytest available with incompatible features
for the one that is provided by CentOS8!
To recap: it is not possible to get all the dependencies built for
Ceph for CentOS8 (like the Python3 ones) on CentOS7 because
dependencies cannot be met.
On Wed, Dec 18, 2019 at 7:44 AM Alfredo Deza <adeza(a)redhat.com> wrote:
Thanks Sage! It seemed borderline impossible to get here without the
last push with core changes
On Tue, Dec 17, 2019 at 5:01 PM Sage Weil <sweil(a)redhat.com> wrote:
> We just merged the bit py2->py3 conversion pull request to master.
> tests are passing, but lots of stuff is
going to break. Please look
> problems and send PRs or at least let us
> There's an etherpad with a TODO list here:
> If you need to base a branch or whatever on a non-broken py2 base, you
> last-py2 branch in ceph.git.
> Big changes (Alfredo, please correct anything I get wrong here!)
> - Master (and octopus) are python3 only. Mgr modules are all python 3.
> The only (known) remaining py2/py3 script in ceph.git (that users will
> see) is /usr/bin/cephadm, which is designed to be 2/3 agnostic and run
- We're only producing python bindings for rados/rgw/rbd/cephfs for
python 3 now. That means no more python-rados; only python3-rados.
- Master/octopus are centos8-only. There will be no centos7 server
packages for octopus. Likewise, there will be no nautilus or mimic
packages for centos8. It is not possible/practical to port our py2
dependencies forward or py3 dependencies backwards. That means:
I want to add emphasis in that Centos7 will *never* have the
dependencies needed for Python3. It is just not possible.
> - package-based upgrades will be tested on ubuntu only
> - centos7 users will need to either simultaneously upgarde
> or migrate to a containerized ceph (either
> ceph-ansible-deployed containers).
> - Teuthology is still py2. Any tests that run stuff out of qa/tasks on
> the host (e.g., vstart-runner) need to run on ubuntu 18.04 (which has
> working versions of both py2 and py3).
> - ceph-container is switching to a centos8 base. We're dropping
> ceph-iscsi and nfs-ganesha from the (master/wip) images until those
> are available.
> - Any other random tests we came across that need py2 (e.g., s3-tests)
> are pinned to ubuntu test nodes for the time being. Lots of catch-up
> do here.
> Big thanks to Alfredo, David, Ken, and the rest of the team who have
away building packages for all of our py3 dependencies for
fedora and centos8! It was a lot of stuff:
Also Kefu, and Justin Caratzas, who signed up to be co-maintainer for
half of those packages!
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