[Bug 1372051] Re: ntp postinst user/group add commands are not idempotent

[Ryan Harper]

I booted a precise server image:

ubuntu at ubuntu:~$ cat /etc/issue
Ubuntu 12.04.5 LTS \n \l

ubuntu at ubuntu:~$ uname -a
Linux ubuntu 3.2.0-88-virtual #126-Ubuntu SMP Mon Jul 6 21:50:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Installed ntp:

% sudo apt-get install ntp
...
http://archive.ubuntu.com/ubuntu/ precise-updates/main ntp amd64 1:4.2.6.p3+dfsg-1ubuntu3.4

ubuntu at ubuntu:~$ grep ntp /etc/group
ntp:x:112:

Then do-release-upgrade to move to 14.04 with no issues.

Examining the postinst scripts in current precise ( ), and various
trusty versions of the ntp package, the script is always idempotent
w.r.t adding the ntp group.  It's not clear to me which version of the
ntp package had a post-inst script that wasn't idempotent.  Getting a
copy of the ntp.postinst script that is failing would be most useful.

One workaround to the dist-upgrade issue is to apt-get remove --purge
ntp (which will run the postrm hook to remove the ntp group) prior to
upgrading.

** Changed in: ntp (Ubuntu)
       Status: New => Incomplete

** Changed in: ntp (Ubuntu)
     Assignee: Ryan Harper (raharper) => (unassigned)

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Title:
  ntp postinst user/group add commands are not idempotent

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