[Bug 1544339] Re: ISST-LTE: Ubuntu 16.04: Debootstrap BAD signature error while installing base system

[Mathieu Trudel-Lapierre]

Yes, this would be very much a time-sensitive, and not-always-
reproducible bug. It hinges on whether every bit of the proxy is up to
date with the archive, so that Release and Release.gpg are in sync or
out of sync, which is why InRelease could work around it pretty well.

Another option is to make sure the proxy does not cache any files for
the archive, although that will negate the speedups you could see from
caching.

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Title:
  ISST-LTE: Ubuntu 16.04: Debootstrap BAD signature error while
  installing base system

Status in debian-installer package in Ubuntu:
  New

Bug description:
  FYI Canonical:

  Somethings may not be in sync with the mirrors as we have been
  recently experiencing a lot of intermittent 16.04 install failures
  with errors like the following while trying to install with the 08-Feb
  netboot images ( http://ports.ubuntu.com/ubuntu-
  ports/dists/xenial/main/installer-
  ppc64el/20101020ubuntu419/images/netboot/ )

  debootstrap: gpgv: BAD signature from "Ubuntu Archive Automatic
  Signing Key <ftpmaster at ubuntu.com>"

  The Signature dates appear to be slipping around a bit.  From a couple
  of recent install failures (the installs were reset back to the
  partitioning stage and retried until successful):

  Non-proxy (p822l):

  Feb 10 21:00:57 debootstrap: gpgv: Signature made Tue Feb  9 19:23:47 2016 UTC using DSA key ID 437D05B5
  Feb 10 21:00:57 debootstrap: gpgv: BAD signature from "Ubuntu Archive Automatic Signing Key <ftpmaster at ubuntu.com>"
  Feb 10 21:09:19 debootstrap: gpgv: Signature made Wed Feb 10 20:45:14 2016 UTC using DSA key ID 437D05B5
  Feb 10 21:09:19 debootstrap: gpgv: Good signature from "Ubuntu Archive Automatic Signing Key <ftpmaster at ubuntu.com>"
  Feb 10 21:09:19 debootstrap: gpgv: Signature made Wed Feb 10 20:45:14 2016 UTC using RSA key ID C0B21F32
  Feb 10 21:09:19 debootstrap: gpgv: Good signature from "Ubuntu Archive Automatic Signing Key (2012) <ftpmaster at ubuntu.com>"

  Proxy-based install (irislp2):

  Feb 10 19:29:34 debootstrap: gpgv: Signature made Wed Feb 10 17:50:18 2016 UTC using DSA key ID 437D05B5
  Feb 10 19:29:34 debootstrap: gpgv: BAD signature from "Ubuntu Archive Automatic Signing Key <ftpmaster at ubuntu.com>"
  Feb 10 20:45:14 debootstrap: gpgv: Signature made Wed Feb 10 20:09:32 2016 UTC using DSA key ID 437D05B5
  Feb 10 20:45:14 debootstrap: gpgv: BAD signature from "Ubuntu Archive Automatic Signing Key <ftpmaster at ubuntu.com>"
  Feb 10 20:55:56 debootstrap: gpgv: Signature made Wed Feb 10 20:09:32 2016 UTC using DSA key ID 437D05B5
  Feb 10 20:55:56 debootstrap: gpgv: Good signature from "Ubuntu Archive Automatic Signing Key <ftpmaster at ubuntu.com>"
  Feb 10 20:55:56 debootstrap: gpgv: Signature made Wed Feb 10 20:09:32 2016 UTC using RSA key ID C0B21F32
  Feb 10 20:55:56 debootstrap: gpgv: Good signature from "Ubuntu Archive Automatic Signing Key (2012) <ftpmaster at ubuntu.com>"

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