check_ubuntu_updates is a collection of Nagios plugins for checking if an Ubuntu system has package updates.
check_ubuntu_update_notifier checks the same thing that the default shell does upon login. It splits the updates into security updates and non-security updates. It has Nagios-style warning and error thresholds, and separate thresholds can be set for each.
check_ubuntu_requires_reboot checks to see if the system reports that it requires a reboot due to updates. It either emits OK or not, and has no configuration.
Copy check_ubuntu_update_notifier and check_ubuntu_requires_reboot to the Nagios client, and run the script via remote execution from your Nagios server.
check_ubuntu_update_notifier requires Python, but unless you have an unusual Ubuntu system, this should be already set up.
check_ubuntu_require_reboot has no configuration options, but check_ubuntu_update_notifier does.
./check_ubuntu_update_notifier -h
usage: check_ubuntu_update_notifier [-h] [-w WARNING] [-c CRITICAL]
Use /usr/lib/update-notifier/apt-check to check for number of updates (and
security updates) on a system.
optional arguments:
-h, --help show this help message and exit
-w WARNING, --warning WARNING
Emit a warning if count of updates or security updates
is greater than this threshold. Format is
UPDATECOUNT,SECURITYUPDATECOUNT
-c CRITICAL, --critical CRITICAL
Emit a critical state if count of updates or security
updates is greater than this threshold. Format is
UPDATECOUNT,SECURITYUPDATECOUNT.
- Make sure check_ubuntu_update_notifier runs on Python 3.
At this point, I have linters set up, but no automated tests.
To run tests/lint, make sure that you have shellcheck and flake8 installed. tests/ci will create a virtualenv and install flake8 into it, but you have to have virtualenv installed.
tests/lint is meant to be run from the root of the project directory.
tests/ci is meant to be run from the root of the project directory.