Set up Nagios alerts in ITSI

Prerequisites

• You must have Nagios installed. Follow the documentation relevant to your operating system and see Installing Nagios Core from Source from the Nagios knowledge base documentation.

Installation

Follow these steps to set up this integration:

1. Install Nagios on a virtual machine. Follow the documentation relevant to your operating system: Installing Nagios Core from Source.
2. Run the commands to install the configuration files relevant to your operating system.
3. Configure the integration and create users and groups, as described in the Nagios documentation.
4. Run the command to start the web server. For example, sudo systemctl start nagios.service

Configure Nagios

1. Configure Nagios to prepare your Nagios instance for the add-on:
   • Enable the main log and log items.
   • Update configurations in nagios.cfg.
   • Update configurations in templates.cfg.
   • Validate configuration files.
2. Configure log inputs for the Splunk Add-on for Nagios Core.
3. Install the Splunk Add-on for Nagios Core. For more information, see Install the Splunk Add-on for Nagios Core.
4. Restart Splunk.