[Bug 2007419] Re: buildd daily kinetic, lunar, and mantic image missing systemd-resolved

[Callahan Kovacs]

@simpoir and @jchittum, do you have any updates?

The core24 base snap is ready to be built on noble and soon we'll be
supporting devel builds using core24.  We really need to be able to use
the buildd base.

Thanks!

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Title:
  buildd daily kinetic, lunar, and mantic image missing systemd-resolved

Status in cloud-images:
  In Progress
Status in livecd-rootfs package in Ubuntu:
  Confirmed
Status in livecd-rootfs source package in Lunar:
  Confirmed

Bug description:
  [ Impact ]

   * There was a regression in the buildd images when systemd-resolved was moved
     out of systemd to a separate package, as the buildd recipes did not include
     systemd-resolved. Those images don't include a resolvconf anymore.

   * This affects buildd images only in the context where they are booted
     standalone (e.g. kvm, multipass). buildd containers which get network
     configuration injected (like launchpad) are not affected.

   * This fix adds the systemd-resolved package explicitly, making the resolver
     available on buildd images like pre-kinetic.

  [ Test Plan ]

   * Build image with project=ubuntu-base subproject=buildd
  image_target=all

   * Boot qcow2 buildd image. run `apt-get update`

   * Apt should be able to resolve mirrors and update fine.

  [ Where problems could occur ]

   * If the context in which buildd images are used injects a resolv.conf
     without unlinking the systemd-resolved stub, the resolver might revert
     the injected config to the systemd-resolved stub on restart.

  [ Original Description ]

  Hello,

  I'm trying to use the buildd daily images [1].  However, I'm having an
  issue with `systemd-resolved` not being installed on buildd's daily
  kinetic and lunar images.

  From what I can gather, systemd-resolved:
  1. exists in all other buildd daily images and buildd release images
  2. exists in the other cloud images [2]
  3. was separated from the systemd package in kinetic and lunar [3]

  It's a bit of a catch-22, because without `systemd-resolved` or
  literally `/usr/bin/resolvectl`, I can't run `apt install systemd-
  resolved` in my LXD environment.

  Can someone please advise?  Was this package excluded on purpose?

  Sources:
  [1] https://cloud-images.ubuntu.com/buildd/daily/
  [2] https://cloud-images.ubuntu.com/
  [3] https://packages.ubuntu.com/search?keywords=systemd-resolved&searchon=names&exact=1&suite=all&section=all

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