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2. Run the SDT for Nagios Configuration Wizard on the central Nagios server (Section 10.2.1— Set up SDT Nagios on central Nagios server)
and perform any additional configuration tasks.
3. Install SDT Connector on each client..
10.2.1 Setup Central Nagios Server
SDT for Nagios requires a central Nagios server running Nagios 2.x or 3.x. Nagios 1.x is not supported. The Nagios server software is available for
most major distributions of Linux using the standard package management tools. Your distribution will have documentation available on how to
install Nagios. This is usually the quickest and simplest way to get up and running.
Note that you will need the core Nagios server package, and at least one of the NRPE or NSCA add-ons. NSCA is required to use the alerting
features of the Black Box distributed hosts; installing both NRPE and NSCA is recommended.
You will also require a web server such as Apache to display the Nagios web UI (and this may be installed automatically depending on the Nagios
packages).
Or, you may wish to download the Nagios source code directly from the Nagios website, and build and install the software from scratch. The Nagios
website (http://www.nagios.org
) has several Quick Start Guides that walk through this process.
Once you are able to browse to your Nagios server and see its web UI and the local services it monitors by default, you are ready to continue.
10.2.2 Setup Distributed Console Servers
This section provides a brief walkthrough on configuring a single console server to monitor the status of one attached network host (a Windows IIS
server running HTTP and HTTPS services) and one serially attached device (the console port of a network router), and to send alerts back to the
Nagios server when an Administrator connects to the router or server.
This walkthrough provides an example, but details of the configuration options are described in the next section. This walkthrough also assumes the
network host and serial devices are already physically connected to the console server. The first step is to set up the Nagios features on the console
server:
Figure 10-3. Nagios screen.
Browse the Black Box console server and select System: Nagios on the console server Management Console. Check Nagios service Enabled.
Enter the Host Name and the Nagios Host Address (for example, IP address) that the central Nagios server will use to contact the distributed Black
Box console server.
Enter the IP address that the distributed Black Box console server will use to contact the central Nagios server in Nagios Server Address.
Enter the IP address that the clients running SDT Connector will use to connect through the distributed Black Box servers in SDT Gateway address.
Check Prefer NRPE, NRPE Enabled, and NRPE Command Arguments.
Check NSCA Enabled, choose an NSCA Encryption Method and enter and confirm an NSCA Secret. Remember these details because you will need
them later on. For NSCA Interval, enter: 5.