[Bug 1679252] Re: Cloud images for non-Intel architectures are configured with security repos that don't work

[Bug Watch Updater]

** Changed in: livecd-rootfs
       Status: Unknown => New

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https://bugs.launchpad.net/bugs/1679252

Title:
  Cloud images for non-Intel architectures are configured with security
  repos that don't work

Status in livecd-rootfs:
  New
Status in livecd-rootfs package in Ubuntu:
  Confirmed

Bug description:
  [Impact]

  Users who don't get a fresh sources.list written out on first boot
  (e.g. Docker users) can't install updates from xenial-security on non-
  Intel architectures.

  [Test Case]

  Run an ubuntu-cpc livefs build for a non-Intel architecture, unpack
  one of the produced root tarballs, chroot in to it and perform an
  `apt-get update`.  You should see no errors.

  [Regression Potential]

  This change modifies the sources that apt will use for updates, so the
  biggest risk for regression is that the fix is malformed and systems
  become un-updateable (either partially or fully).  The test above
  should catch this.

  [Original Report]

  In the fix for bug 1513529, we[0] modified livecd-rootfs to write out
  a sources.list that matches the sources.list in Ubuntu Server
  installed from an ISO.  We (presumably) compared to an Intel
  installation, and hard-coded security.ubuntu.com as a repo in
  sources.list.

  Unfortunately, packages for non-Intel architectures aren't published
  to security.ubuntu.com; they are instead published at
  http://ports.ubuntu.com/ubuntu-ports/.  That should be the URL that we
  configure as the source for $SUITE-security.

  [0] Well, *ahem*, _I_.

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