[Bug 1742695] Re: apt-get update silently fails fetching security updates

[Roman Fiedler]

Here the output:

# apt-get update
....
Err:3 http://mirror.[domain]/ubuntu xenial-security InRelease
  Unable to connect to mirror.[domain]:80:
Reading package lists... Done
...
W: Failed to fetch http://mirror.[domain]/ubuntu/dists/xenial-security/InRelease  Unable to connect to mirror.[domain]:80:
W: Some index files failed to download. They have been ignored, or old ones used instead.
# echo $?
0

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https://bugs.launchpad.net/bugs/1742695

Title:
  apt-get update silently fails fetching security updates

Status in apt package in Ubuntu:
  Incomplete

Bug description:
  On Ubuntu Xenial, apt-get fails silently when security update server
  cannot be reached. This state could be detected by scanning the apt-
  get output afterwards. But manually adding workarounds to each apt-get
  invocation in production automation is prone to error, thus leaving
  machines without security updates.

  Expected behaviour (e.g.):
  * 0 - all OK
  * 1 - temporary failure (e.g. network)
  * 2 - permanent failure

  
  Test:
  * Change your update server IP in /etc/hosts to something unreachable
  * Run apt-get update (might take a while)
  * Check exit status

  
  $ lsb_release -r -d
  Description:    Ubuntu 16.04.3 LTS
  Release:        16.04
  rfiedler at n3ahit1403:~$ 

  ii  apt                                 1.2.24
  amd64        commandline package manager

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