Check CPU Usage - Plugins?

PinkFrog · June 9, 2020, 5:17am

Hello everybody,

I’m searching for some recommendations for the best check plugins to check the cpu usage on linux and on windows systems. Can someone recommend some?

The management of our company would like to know the cpu usage in percent, not the cpu load…

Thanks for any suggestion!

Alicia

radioactive9 · June 9, 2020, 9:32am

For Linux Probably this is a good place to start:

https://exchange.nagios.org/directory/Plugins/Operating-Systems/Linux/Linux-CPU-Check-with-Top-5-Processes/details

For Windows may be @cstein can suggest

linuxfabrik · June 12, 2020, 6:43am

Maybe these checks help on Linux, especially the cpu-usage check:

m4k5ym · June 12, 2020, 12:04pm

For windows there is a check available as well. You have to use the powershell-framework:

Invoke-IcingaCheckCPU

linuxfabrik · July 18, 2022, 7:27am

The plugins have been moved to GitHub. Have a look at GitHub - Linuxfabrik/monitoring-plugins: More than 160 check plugins for Icinga and other Nagios-compatible monitoring applications. Each plugin is a standalone command line tool (written in Python) that provides a specific type of check.

NiclasE · September 16, 2024, 1:06pm

I’m trying to use this check on Linux hosts, but a bit confused on what prereqs there are, it seems to rely on psutil, correct? Does that mean that I also need to install python on the hosts which I want to monitor ? (I use the Icinga agent because we need the hosts to push to Icinga due to network isolation)

rivad · September 16, 2024, 1:27pm

I use it with success

The Python version requires psutil but there’s a compiled (with nuitka) version that should be self contained.

NiclasE · September 16, 2024, 1:49pm

So this one first, then the cpu-check should be OK?

Nuitka Downloads — Nuitka the Python Compiler

rivad · September 16, 2024, 1:54pm

The Linuxfabrik provides precompiled packages.

github.com

Linuxfabrik/monitoring-plugins/blob/main/INSTALL.rst#what-to-choose-when

How to install the Linuxfabrik Monitoring Plugins Collection
============================================================

What to choose when
-------------------

In general, you have two options:

* Using the compiled plugins (available as OS packages, EXE files or simple archives).
* Using the plugins from the source code (requires Python runtime).

.. csv-table::
    :header-rows: 1
    :widths: 10, 60, 30

    OS, Motivation, Install
    Linux,  "Want to use my OS's package manager and have distro that uses rpm/deb package formats","Package from `Linuxfabrik's Repo Server <https://repo.linuxfabrik.ch>`_"
    Linux,  "Don't want to use my OS's package manager or have distro that uses package formats other than rpm/deb and can't run Python 3.6+",Binaries from .tar or .zip file on `Linuxfabrik's Download Server <https://download.linuxfabrik.ch/monitoring-plugins/>`_
    Linux,  "Want to use the latest development version and Python 3.6+ available", `Source code variant from GitHub <https://github.com/Linuxfabrik/monitoring-plugins/tree/main>`_
    Windows,"Want to use EXE files",Binaries in ``/windows`` on `Linuxfabrik's Download Server <https://download.linuxfabrik.ch/monitoring-plugins/windows/>`_

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NiclasE · September 16, 2024, 2:01pm

Oh… missed that. Thanks!

NiclasE · September 16, 2024, 2:24pm

Got it going, created the service template/command in Director and tried it on a host that has the plugins… Got this
Wondering which DB it tries to write to, and if I need to set some permission on any local DB file on the host maybe?

Query failed: INSERT INTO "perfdata" (cpu_usage,guest,guest_nice,iowait,irq,nice,softirq,steal,system,user) VALUES (:cpu_usage,:guest,:guest_nice,:iowait,:irq,:nice,:softirq,:steal,:system,:user);, Error: attempt to write a readonly database, Data: {'cpu_usage': 5.6, 'guest': 0.0, 'guest_nice': 0.0, 'iowait': 1.6, 'irq': 0.0, 'nice': 0.0, 'softirq': 0.0, 'steal': 0.0, 'system': 1.6, 'user': 2.4}

rivad · September 16, 2024, 2:34pm

I guess it tries to write into a local sqlite file.

NiclasE · September 16, 2024, 5:07pm

Probably yes, just need to find out where it is

Edit: Found it… It’s under /tmp. Just had the wrong owner.