Install the Splunk Add-on for Nagios Core

1. Get the Splunk Add-on for Nagios Core by downloading it from https://splunkbase.splunk.com/app/2703 or browsing to it using the app browser within Splunk Web.
2. Determine where and how to install this add-on in your deployment, using the tables on this page.
3. Perform any prerequisite steps before installing, if required and specified in the tables below.
4. Complete your installation.

If you need step-by-step instructions on how to install an add-on in your specific deployment environment, see the installation walkthroughs section at the bottom of this page for links to installation instructions specific to a single-instance deployment, distributed deployment, Splunk Cloud, or Splunk Light.

Distributed deployments

Use the tables below to determine where and how to install this add-on in a distributed deployment of Splunk Enterprise or any deployment for which you are using forwarders to get your data in. Depending on your environment, your preferences, and the requirements of the add-on, you may need to install the add-on in multiple places.

Where to install this add-on

Unless otherwise noted, all supported add-ons can be safely installed to all tiers of a distributed Splunk platform deployment. See Where to install Splunk add-ons in Splunk Add-ons for more information.

This table provides a reference for installing this specific add-on to a distributed deployment of the Splunk platform.

Splunk platform instance type	Supported	Required	Actions required / Comments
Search Heads	Yes	Yes	Install this add-on to all search heads where Nagios Core knowledge management is required.
Indexers	Yes	Conditional	Not required if you use heavy forwarders to collect all data. Required if you use universal or light forwarders to collect log data.
Heavy Forwarders	Yes	See comments	To collect NDOUtils data, you must use Splunk DB Connect on a search head or heavy forwarder. You can collect log data using a universal or light forwarder installed directly on the machines running Nagios Core.
Universal Forwarders	Yes	See comments	Supported for collecting log data only. The forwarder collecting your log data must be installed on the same machine as your Nagios Core instance.
Light Forwarders	Yes	See comments	Supported for collecting log data only. The forwarder collecting your log data must be installed on the same machine as your Nagios Core instance.

Distributed deployment feature compatibility

This table describes the compatibility of this add-on with Splunk distributed deployment features.

Distributed deployment feature	Supported	Actions required
Search Head Clusters	Yes	You can install this add-on on a search head cluster for all search-time functionality, but configure inputs on forwarders to avoid duplicate data collection. Before you install this add-on to a cluster, remove the eventgen.conf file and all files in the samples folder.
Indexer Clusters	Yes	Before you install this add-on to a cluster, remove the eventgen.conf file and all files in the samples folder.
Deployment Server	No	Supported for deploying unconfigured add-ons only. Using a deployment server to deploy the configured add-on to multiple forwarders acting as data collectors causes duplication of data. The add-on uses the credential vault to secure your credentials, and this credential management solution is incompatible with the deployment server.

Installation walkthroughs

The Splunk Add-Ons manual includes an Installing add-ons guide that helps you successfully install any Splunk-supported add-on to your Splunk platform.

For a walkthrough of the installation procedure, follow the link that matches your deployment scenario:

• Single-instance Splunk Enterprise
• Distributed Splunk Enterprise
• Splunk Cloud
• Splunk Light