Docker Installation Guide

This page details how to install nagrestonf using Docker, which is available for most operating systems.

Before installation

The instructions on this page are for installing Nagios and Nagrestconf on a computer that already has Docker installed. Please search the Internet for the best/easiest way to install Docker on your OS.

Overview

Installation consists of the following steps:

  • Install a compatible Nagios container from Docker Hub.
  • Install the Nagrestconf container from Docker Hub.
  • Test Nagrestconf and Nagios.
  • Create an initial configuration.

SEE ALSO: mclarkson/nagrestconf-docker for alternative installation options and to find out how to change the default passwords.

Install a compatible Nagios container from Docker Hub.

Open a terminal window or ssh session on the target server then install Nagios using the following commands:

docker run -d --name nagios4 -p 8080:80 -v /opt/nagios jasonrivers/nagios:latest

Install the Nagrestconf container from Docker Hub.

The following commands will get the custom configuration and start the nagrestconf container:

wget https://raw.githubusercontent.com/mclarkson/nagrestconf-docker/master/jasonrivers_docker-nagios.env

docker run -d -p 8880:8080 --name nagrestconf -v /tmp \
  --volumes-from nagios4 --env-file jasonrivers_docker-nagios.env \
  mclarkson/nagrestconf

Then start the nagrestconf-restarter container:

docker run -d --name nagrestconf-restarter \
    -e NAGIOSCMD=/opt/nagios/var/rw/nagios.cmd \
    --volumes-from nagrestconf mclarkson/nagrestconf-restarter

Test Nagrestconf and Nagios

The nagrestsconf and nagios web interfaces should be accessible now.

Log into nagrestconf with user 'nagrestconfadmin', and the password 'admin'.

The nagrestconf interface, at 'http://server:8880/nagrestconf', will look like the following screen shot.

Log into nagios with user 'nagiosadmin', and the password 'nagios'.

The nagios interface, at 'http://server/nagios3', will look like the following screen shot.

Create an initial configuration

To create a simple test configuration use a script that makes REST calls, or use the 'Backup/Restore' button in the nagrestconf GUI. The latter method will be used in this guide.

Create an initial configuration using 'Backup/Restore'

An example configuration can be downloaded from this link, then log into nagrestconf and use the 'Backup/Restore' button.

Click 'Close' in the 'Backup/Restore' dialog then refresh the page.

The new configuration will not appear in the Nagios Web interface until the 'Apply Changes' button is clicked, and then applied.

That's it!

 

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