[Bug 1856066] Re: do-release-upgrade ncorrectly reports no upgrade available if it cannot connect to changelogs.ubuntu.com:443

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1856066

Title:
  do-release-upgrade ncorrectly reports no upgrade available if it
  cannot connect to changelogs.ubuntu.com:443

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged

Bug description:
  We use apt-cacher-ng configured as apt proxy on every machine and when
  trying to upgrade a Xenial machine, I got this:

  # do-release-upgrade 
  Checking for a new Ubuntu release
  No new release found.

  Running tcpdump showed that do-release-upgrade tried to reach
  changelogs.ubuntu.com:443 with a proxy CONNECT through our apt-cacher-
  ng. Our apt-cacher-ng returned: "403 CONNECT denied (ask the admin to
  allow HTTPS tunnels)".

  do-release-upgrade should not ignore those errors silently, it should
  report whatever failure it received.

  
  # lsb_release -rc
  Release:	16.04
  Codename:	xenial

  # apt-cache policy ubuntu-release-upgrader-core
  ubuntu-release-upgrader-core:
    Installed: 1:16.04.29
    Candidate: 1:16.04.29
    Version table:
   *** 1:16.04.29 500
          500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1:16.04.25 500
          500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
       1:16.04.12 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1856066/+subscriptions