Lead Image © erythropterus, 123RF.com

Lead Image © erythropterus, 123RF.com

Versatile network and system monitoring

Digital Watchdog

Article from ADMIN 79/2024
The LibreNMS open source monitoring environment, unlike its predecessor Observium, comes through the back door at no cost, with auto-discovery, alerting, the ability to scale even in very large environments with many devices, and flexible dashboards and widgets for special views.

LibreNMS [1] promises flexible network and system monitoring and combines various functions from tools such as Nagios and Cacti. Another advantage of the software is that, unlike its predecessor Observium, it has no annual license fees for additional features or services such as quick updates, rule-based grouping, and scalability across multiple servers.

Monitoring with LibreNMS is easier now thanks to the auto-discovery function, and the web-based interface provides a wide range of customization options for visualizing information. The auto-update mechanism also ensures that the monitoring environment is always up to date, but first you need to get the software set up.

Integrating Initial Devices

One major advantage of LibreNMS is that the developers make it really easy for administrators to carry out an initial evaluation of the environment. They provide the installation packages for Ubuntu 20.04/22.4, CentOS 8, and Debian 11, along with Docker, virtual machine (VM) images, and an online demo [2].

If you opt for a local installation, you can access LibreNMS on http://localhost: 8080 . You need to define the access credentials during the configuration process. If you use the VMs, the credentials are already predefined (username librenms , password D32fwefwef ).

LibreNMS is configured by default to update the environment automatically. If you want to run a manual update, you can use the ./daily.sh command as the librenms user. In principle, you can disable the update mechanism in the global settings under Updates in the web graphical user interface (GUI). However, the developers advise against doing so because the daily.sh script not only installs the latest system components, but also handles other tasks

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