about-me: Crashes when CPU frequency information is not available

[cebe]

This issue respects the following points:

• This is a bug, not a question or a setup/configuration issue.
• This issue is not already reported on Github (I've searched it).
• I use the latest release of the Monitoring Plugins (https://github.com/Linuxfabrik/monitoring-plugins/releases).
• I agree to follow Monitoring Plugins's Code of Conduct.

Which variant of the Monitoring Plugins do you use?

• .rpm/.deb package from repo.linuxfabrik.ch
• Compiled for Windows from download.linuxfabrik.ch
• Source Code from GitHub

Bug description

Plugin Ausgabe:

Plugin-Ausgabe
Traceback (most recent call last):
  File "/usr/lib64/nagios/plugins/about-me", line 926, in 'module'
    main()
  File "/usr/lib64/nagios/plugins/about-me", line 863, in main
    msg += 'Current Speed: {} MHz, '.format(int(sys_dimensions['cpu_freq'][0]))
                                                ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
TypeError: 'NoneType' object is not subscriptable

It seems sys_dimensions['cpu_freq'] is "None" on my system.

Steps to reproduce - Plugin call

/usr/lib64/nagios/plugins/about-me

Steps to reproduce - Data

I run this on an ARM64 virtual machine in Hetzner Cloud.

Debug output of sys_dimensions is this on my machine:

{'cpu_logical': 4, 'cpu_physical': 4, 'cpu_usable': 4, 'cpu_freq': None, 'ram': 8126111744}

Environment

Linux ... 6.1.0-41-arm64 #1 SMP Debian 6.1.158-1 (2025-11-09) aarch64 GNU/Linux

Plugin Version

about-me: v2025092201 / v2.2.1 by Linuxfabrik GmbH, Zurich/Switzerland

Python version

Python 3.11.2

List of Python modules

No response

Additional Information

No response

[cebe]

Seems this is fixed in 7ab7ea3 already, but not yet released. Waiting for a release then :-)

[cebe]

Looking at the code I think there is still a bug though:

monitoring-plugins/check-plugins/about-me/about-me

Lines 851 to 857 in 7ab7ea3

	msg += 'CPUs: {}/{}/{} (phys/lcpu/onln), '.format(
	sys_dimensions['cpu_physical'],
	sys_dimensions['cpu_logical'],
	sys_dimensions['cpu_usable'],
	)
	if sys_dimensions['cpu_freq']:
	msg += 'Current Speed: {} MHz, '.format(int(sys_dimensions['cpu_freq'][0]))

at this stage sys_dimensions is not defined or empty, so it should not provide CPU info but only dmi info.

[markuslf]

The original crash has been fixed in v2025120201 — cpu_freq is now checked before access. The dead code in the elif dmi: branch has also been removed.