Upgrade OVN to 22.03 on Focal in charm-guide

[Pedro Victor Lourenço Fragola]

- [X ] I have a fix to the document that I can paste below including example: input and output.

Please the steps[0] need to add ovn-central package

Change this:

juju exec -a ovn-central 'apt update && apt -y install \
   --only-upgrade openvswitch-common ovn-common'

to

juju exec -a ovn-central 'apt update && apt -y install \
   --only-upgrade openvswitch-common ovn-common ovn-central'

[0] https://docs.openstack.org/charm-guide/latest/project/procedures/ovn-upgrade-2203.html#ensure-ovn-package-requirements

[Peter Matulis (petermatulis)]

Thanks Pedro. We're looking into this.

[Peter Matulis (petermatulis)]

Pedro, did the missing bits cause a failure of some kind?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-guide/+/899892

[Edward Hope-Morley (hopem)]

if this issue is real then presumably the problem also exist for ovn-chassis since we not include ovn-host in the list of packages to upgrade?

[Trent Lloyd (lathiat)]

Once you upgrade one package from the same source package, the rest will also get upgraded.

The reason is that Debian packages from the same source package will generally depend on each other with an exact version match. For example:

root@master-gopher:~# apt show ovn-central
Package: ovn-central
Version: 20.03.2-0ubuntu0.20.04.4
...
Depends: lsb-base, lsb-release, openvswitch-common (>= 2.13.0~git20200212.15ae9db33-0ubuntu1~), ovn-common (= 20.03.2-0ubuntu0.20.04.4), libc6 (>= 2.29), libcap-ng0 (>= 0.7.9), libssl1.1 (>= 1.1.0), libunbound8 (>= 1.8.0)

We have used this a lot everywhere to upgrade related packages of ceph, neutron, etc.. so I don't see why this change is necessary. This is also noted in the review comments. I think we can drop this?

It would help if @Pedro you have any information about why you opened this bug. Did you see a specific case where you think this didn't work? We'd need some more details.

[Pedro Victor Lourenço Fragola (pedrovlf)]

Hey @all

If the package is going to be upgraded along with its dependencies, particularly the "ovn-central" package... +1 thanks for checking it.

The context we dealt with involved an incomplete upgrade that disrupted OVN. While troubleshooting, we discovered that certain packages, like "ovn-central," weren't updated. Hence, I suggested this to prevent potential issues in the future.

    ovn-central:
      Installed: 20.03.2-0ubuntu0.20.04.4
      Candidate: 22.03.3-0ubuntu0.22.04.1~cloud0
      Version table:
         22.03.3-0ubuntu0.22.04.1~cloud0 500
            500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/ovn-22.03/main amd64
    ovn-common:
      Installed: 20.03.2-0ubuntu0.20.04.4
      Candidate: 22.03.3-0ubuntu0.22.04.1~cloud0
      Version table:
         22.03.3-0ubuntu0.22.04.1~cloud0 500
            500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/ovn-22.03/main amd64

Edited: I understand that, with the dependency on the openvswitch-common and ovn-common packages, the ovn-central package has to be updated. Thanks for confirming this.

[Peter Matulis (petermatulis)]

i'm still unsure what's going on here. packages should be upgraded but there have been reports of them not being upgraded? is there some other issue at play here besides apt dependency management?

[Pedro Victor Lourenço Fragola (pedrovlf)]

Based on Trent's explanation, I understood that this change is not necessary so this request can be marked as invalid.

Thanks!

[Peter Matulis (petermatulis)]

alright thank you

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Peter Matulis <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/charm-guide/+/899892
Reason: superseded by 4e081814a0df2e11aeb4f61775b549828fdeaf89