Let me start by saying I have been forbidden to enable automatic updates on our Ubuntu servers, for both security and regular packages.
When I log into any of my four Ubuntu servers, the welcome message contains this:
39 packages can be updated. 26 updates are security updates.
However, when I run the Nagios plugin that monitors APT, I get:
% /usr/lib/nagios/plugins/check_apt APT WARNING: 33 packages available for upgrade (0 critical updates).
I need to know how to properly detect that there are pending security updates, and regular updates. Once I can do that, I plan to write a Nagios script that will return WARNING for pending regular updates, and CRITICAL for pending security updates.
Anyone know how to detect those two conditions?