[Bug 805423] Re: pam_motd needs a module option to disable in-line dynamic updates

[Till Klampaeckel]

Well, I am a 100% sure it's /usr/bin/landscape-sysinfo. It happened
fairly consistently last week. To a point where I couldn't login at all,
unless I rebooted the instance and logged in right away. We have now
removed the landscape-client to ensure login always works.

When I ran this script while logged in, it would always work as well.
Just during the login it would block.

I'm not too familiar with python and could not step-through the twistd
code. Would you have a tip what I could do to figure out why it blocks
and doesn't let me login when I re-install landscape-client on a test
instance? I am guessing there is no general error log which would allow
me get errors from.

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https://bugs.launchpad.net/bugs/805423

Title:
  pam_motd needs a module option to disable in-line dynamic updates

Status in Landscape Client:
  New
Status in “pam” package in Ubuntu:
  Fix Released

Bug description:
  1) lsb_release -rd
  Description:	Ubuntu 10.04.2 LTS
  Release:	10.04

  2)  Installiert: 1.1.1-2ubuntu5.3
    Kandidat: 1.1.1-2ubuntu5.3
    Versions-Tabelle:
   *** 1.1.1-2ubuntu5.3 0
          500 http://de.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
          500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
          100 /var/lib/dpkg/status
       1.1.1-2ubuntu2 0
          500 http://de.archive.ubuntu.com/ubuntu/ lucid/main Packages

  3) Login on systems with high load/a lot of io wait via ssh should
  still be possible.

  4) On servers with high load or a lot of io wait login times out,
  because pam_motd does io intensive calculations. This hurts even more
  when using nagios check_by_ssh. There should be a way to use a cron
  job again (like update-motd did). Logging into a system is more
  important than motd.

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