Nagvis Centos 7

Nagvis Centos 7

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How to Install and Configure Nagvis on Centos 7

Nagvis is a powerful visualization tool that allows you to create dynamic maps and graphs of your network infrastructure and performance. It integrates seamlessly with Nagios, a popular monitoring system that can alert you of any issues or failures in your network. In this article, we will show you how to install and configure Nagvis on Centos 7, a Linux distribution that is widely used for servers and enterprise applications.

Prerequisites

Before you start, you will need the following:

A server running Centos 7 with root access

Nagios installed and configured on the same server (you can follow this guide to do so: https://www.digitalocean.com/community/tutorials/how-to-install-nagios-on-centos-7)

A web browser to access the Nagvis web interface

Step 1: Install Nagvis

The easiest way to install Nagvis on Centos 7 is to use the EPEL repository, which contains many useful packages that are not available in the official Centos repositories. To enable the EPEL repository, run the following command:

yum install epel-release -y

Then, update your system and install Nagvis with the following commands:

yum update -y

yum install nagvis -y

This will install Nagvis along with its dependencies, such as Apache, PHP, and MySQL.

Step 2: Configure Nagvis

After installing Nagvis, you need to configure some settings to make it work with Nagios and your web server. First, you need to edit the file /etc/nagvis/nagvis.ini.php and change the following parameters:

[global]: Set authmodule=\"CoreAuthMod_Nagios\" and authorisationmodule=\"CoreAuthorisationMod_Nagios\". This will enable Nagvis to use the same authentication and authorization system as Nagios.

[paths]: Set htmlcgi=\"/nagios/cgi-bin\". This will tell Nagvis where to find the Nagios CGI scripts.

[defaults]: Set backend=\"ndomy_1\". This will tell Nagvis which backend to use for retrieving data from Nagios.

[backend_ndomy_1]: Set dbhost=\"localhost\", dbport=3306, dbname=\"nagios\", dbuser=\"nagios\", and dbpass=\"nagios\". These are the database settings for Nagios, which you should have configured during the Nagios installation.

You can also change other settings according to your preferences, such as the theme, language, or map options. For more details, you can refer to the documentation: https://docs.nagvis.org/1.9/en_US/index.html

Step 3: Restart Services

To apply the changes, you need to restart the Apache and Nagios services with the following commands:

systemctl restart httpd

systemctl restart nagios

Step 4: Access Nagvis Web Interface

Now you can access the Nagvis web interface by opening your web browser and typing the following URL:

http://your_server_ip/nagvis

You should see a login screen like this: aa16f39245