Nagios Enterprise Monitoring Server
for Raspberry Pi

NEMS Linux is free to download and use. Please consider supporting the project by becoming a patron, shopping through our affiliate links, or directly donating.

Current Version: 1.5.2 (Build 1)

IMPORTANT NOTE IF UPGRADING: 1.5.2 NEMS Migrator is experiencing issues importing older backup.nems files. This is being worked on and a patch will be issued soon. If you are upgrading, please note you may experience issues. Please hang tight for Build 2 or the update patch. New users / new deployments should not be impacted.

Supported Devices:

  • Recommended:
    It goes without saying the Raspberry Pi 4 Model B 8 GB board is the best possible system for a Raspberry Pi-based NEMS Server. That said, these boards have enough RAM and CPU power to run NEMS Linux reliably:
    • Raspberry Pi 4 Model B
    • Raspberry Pi 3 Model B+
    • Raspberry Pi 3 Model B
  • Supported Accessories:
    These optional accessories are supported.
    • Omzlo's PiWatcher
      Automatically power-cycle your NEMS server if your Raspberry Pi locks up.
    • Omzlo's PiVoyager
      Provides exactly the same watchdog feature as the PiWatcher, but adds a battery backup to keep your Raspberry Pi running stable even during power outages.
    • TEMPer thermal and humidity sensors
      Monitor your server room's ambient temperature and relative humidity. NEMS Linux 1.5.2 includes sample check commands in the demo config.
  • Supported, but not optimal:
    These boards may suffer from poor performance due to lack of available RAM and/or CPU power. WiFi is not recommended for NEMS Linux servers, though it is supported.
    Some features will be turned off by default to improve performance, but may be enabled via NEMS SST. Remember that the Pi 3 is roughly twice as powerful as the Pi 2. For best performance in the Raspberry Pi lineup, choose a Raspberry Pi 3 or higher.
    • Raspberry Pi 3 Model A+
    • Raspberry Pi 2
    • Raspberry Pi 1 Model B+
    • Raspberry Pi 1 Model B
    • Raspberry Pi Zero W
    • Raspberry Pi Zero (Requires USB Micro to Ethernet adapter or USB WiFi)
  • Not Supported:
    These boards do not have enough eMMC storage to run NEMS Linux.
    • Compute Module 3
    • Compute Module

Minimum SD Card Size: 16 GB

Recommended SD Card Size: 32 GB

Buy The Hardware

Raspberry Pi devices are very affordable, and using the NEMS Linux image, you simply buy the device, download the image file (below), “burn” the image to the Micro SD card, and boot it up.

Visit the NEMS Certified Hardware page to buy your device, complete with the Micro SD card, a power adapter, a good solid case, and more.

Please buy it through our links, or let me know if you need a customized link to a different model. We get a small percentage of the sale, and it helps to make it possible to offer NEMS as a free download.

Download NEMS Linux for Raspberry Pi

Psst! NEMS Linux was a boatload of work. If you appreciate the nights of cuddles my wife lost, please help me treat her to a very nice romantic dinner by throwing something in the tip jar.

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