Docker-Nagios

Docker image for Nagios

Nagios Core running on Ubuntu 22.04 LTS with NagiosGraph & NRPE

Product	Version
Nagios Core	4.4.14
Nagios Plugins	2.4.6
NRPE	4.1.0
NCPA	2.4.0
NSCA	2.10.2

Configurations

Nagios Configuration lives in /opt/nagios/etc NagiosGraph configuration lives in /opt/nagiosgraph/etc

Install

docker pull capruro/nagios:latest

Running

Run with the example configuration with the following:

docker run --name nagios4 -p 0.0.0.0:8080:80 capruro/nagios:latest

alternatively you can use external Nagios configuration & log data with the following:

docker run --name nagios4  \
  -v /path-to-nagios/etc/:/opt/nagios/etc/ \
  -v /path-to-nagios/var:/opt/nagios/var/ \
  -v /path-to-custom-plugins:/opt/Custom-Nagios-Plugins \
  -v /path-to-nagiosgraph-var:/opt/nagiosgraph/var \
  -v /path-to-nagiosgraph-etc:/opt/nagiosgraph/etc \
  -p 0.0.0.0:8080:80 capruro/nagios:latest

Note: The path for the custom plugins will be /opt/Custom-Nagios-Plugins, you will need to reference this directory in your configuration scripts.

There are a number of environment variables that you can use to adjust the behaviour of the container:

Environamne Variable	Description
MAIL_RELAY_HOST	Set Postfix relayhost
MAIL_INET_PROTOCOLS	set the inet_protocols in postfix
NAGIOS_FQDN	set the server Fully Qualified Domain Name in postfix
NAGIOS_TIMEZONE	set the timezone of the server

For best results your Nagios image should have access to both IPv4 & IPv6 networks

Credentials

The default credentials for the web interface is nagiosadmin / nagios

Extra Plugins

• Nagios nrpe [http://exchange.nagios.org/directory/Addons/Monitoring-Agents/NRPE--2D-Nagios-Remote-Plugin-Executor/details]
• Nagiosgraph [http://exchange.nagios.org/directory/Addons/Graphing-and-Trending/nagiosgraph/details]
• JR-Nagios-Plugins - custom plugins I've created [https://github.com/JasonRivers/nagios-plugins]
• WL-Nagios-Plugins - custom plugins from William Leibzon [https://github.com/willixix/WL-NagiosPlugins]
• JE-Nagios-Plugins - custom plugins from Justin Ellison [https://github.com/justintime/nagios-plugins]
• DF-Nagios-Plugins - custom pluging for MSSQL monitoring from Dan Fruehauf [https://github.com/danfruehauf/nagios-plugins]
• check-mqtt - custom plugin for mqtt monitoring from Jan-Piet Mens [https://github.com/jpmens/check-mqtt.git]