Difference between revisions of "Cool Solution - Automatic Upgrades for UCC Thinclients"

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{{Cool Solutions Disclaimer|Repository=no|UCC=1.0}}
= Introduction =
{{Cool Solutions Disclaimer|Repository=no}}
{{Out of Maintenance}}
Ubuntu's Advanced Packaging Tool (APT) offers means for automatic software maintenance. The '''unattended-upgrades''' package is usually installed by default in UCC desktops.
== Archive ==
It basically installs the /etc/cron.daily/apt cron script, which follows the instructions in these two files (explained next in more detail):
There is a version of this article for [http://wiki.univention.de/index.php?title=Cool_Solution_-_Automatic_Upgrades_for_UCC_Thinclients&oldid=12445 UCC 1.0].
* /etc/apt/apt.conf.d/10periodic (The frequency, in days, for the main tasks)
* /etc/apt/apt.conf.d/50unattended-upgrades (Options)
= Configuration =
== Set up ==
sudo apt-get install unattended-upgrades
== Activate unattended upgrades ==
Automatic updates are normally disabled. To enable them, make sure both variables,
'''APT::Periodic::Unattended-Upgrade''' and '''APT::Periodic::Update-Package-Lists''' are set to "1" in /etc/apt/apt.conf.d/10periodic
cat /etc/apt/apt.conf.d/10periodic
  APT::Periodic::Unattended-Upgrade "1";
  APT::Periodic::Update-Package-Lists "1";
  APT::Periodic::Download-Upgradeable-Packages "1";
  APT::Periodic::AutocleanInterval "5";
As we can see, in this file is possible to enable the automatic update of lists and the download and clean up of packages. For more options, you can check out the comments on the cron script.
== Options ==
The main file to configure 'unattended-upgrades' is /etc/apt/apt.conf.d/50unattended-upgrades
There, you can select package sources. The system will apply such updates as programed. Typically you would allow '''security''' and '''updates'''. (// means the line is commented out)
  Unattended-Upgrade::Allowed-Origins {
  //    "${distro_id}:${distro_codename}-proposed";
  //    "${distro_id}:${distro_codename}-backports";
You can also exclude some critical packages you don't want to upgrade
  Unattended-Upgrade::Package-Blacklist {
The /etc/apt/apt.conf.d/50unattended-upgrades file documents other useful options:
Unattended-Upgrade::AutoFixInterruptedDpkg "true";
Unattended-Upgrade::Remove-Unused-Dependencies "true";
Unattended-Upgrade::Automatic-Reboot "false";
Unattended-Upgrade::InstallOnShutdown "true";
Set up notifications
Unattended-Upgrade::Mail "root@example.com";
Unattended-Upgrade::MailOnlyOnError "true";
And one to limit the network bandwidth (kb/sec)
Acquire::http::Dl-Limit "128";
Finally, the [https://help.ubuntu.com/12.04/serverguide/automatic-updates.html Official documentation] recommends the package ''apticron'' for more advanced notification options.
= More =
* [https://help.ubuntu.com/12.04/serverguide/automatic-updates.html Automatic updates] Ubuntu Documentation

Latest revision as of 11:14, 8 September 2017

Produktlogo UCC Version 1.0

Note: Cool Solutions are articles documenting additional functionality based on Univention products. Not all of the shown steps in the article are covered by Univention Support. For questions about your support coverage contact your contact person at Univention before you want to implement one of the shown steps.

Also regard the legal notes at Terms of Service.
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There is a version of this article for UCC 1.0.

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