How To Install LibreNMS on CentOS 7

r00t January 25, 2018

Install LibreNMS on CentOS 7

In this tutorial we will show you how to install LibreNMS on CentOS 7 server. For those of you who didn’t know, For those of you who didn’t know, LibreNMS is an open source auto-discovering network monitoring tool for servers and network hardware. It supports a wide range of network hardware like Cisco, Juniper, Brocade, Foundry, HP and operating systems including Linux and Windows. LibraNMS is a community-based fork of Network monitoring tool “Observium“, released under GPLv3.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation the LibreNMS network monitoring tool on a CentOS 7 server.

LibreNMS Features

  • Automatic discovery
  • Customisable alerting
  • API Access
  • Billing system
  • Automatic Updates
  • Distributed Polling
  • iOS and Android App
  • Unix Agent
  • And many more

Install LibreNMS on CentOS 7

Step 1. First let’s start by ensuring your system is up-to-date.

Step 2. Install LAMP server.

A CentOS 7 LAMP stack server is required. If you do not have LAMP installed, you can follow our guide here. Also install required PHP modules:

Step 3. Installing LibreNMS.

First, Add LibreNMS user:

Next, clone LibreNMS repo on /opt directory:

Set the correct permission to the librenms directory:

Step 4. Configuring MariaDB for LibreNMS.

By default, MariaDB is not hardened. You can secure MariaDB using the mysql_secure_installation script. you should read and below each steps carefully which will set root password, remove anonymous users, disallow remote root login, and remove the test database and access to secure MariaDB:

Configure it like this:

Next we will need to log in to the MariaDB console and create a database for the LibreNMS. Run the following command:

This will prompt you for a password, so enter your MariaDB root password and hit Enter. Once you are logged in to your database server you need to create a database for LibreNMS installation:

Next, open the MariaDB configuration file and add the following lines under [mysqld] section:

Restart MariaDB for the changes to take effect:

Step 5. Configure Apache web server for LibreNMS.

We will create Apache virtual host for your LibreNMS website. First create ‘/etc/httpd/conf.d/vhosts.conf’ file with using a text editor of your choice:

Next, create the virtual host:

Add the following lines:

Save and close the file. Restart the apache service for the changes to take effects:

Step 6. Configure Firewall.

Allow apache through the firewall so that user can able to access LibreNMS portal from an external machine:

Step 7. Accessing LibreNMS.

LibreNMS will be available on HTTP port 80 by default. Open your favorite browser and navigate to http://yourdomain.com/ or http://server-ip/ and complete the required the steps to finish the installation. If you are using a firewall, please open port 80 to enable access to the control panel.

Congratulation’s! You have successfully installed LibreNMS. Thanks for using this tutorial for installing LibreNMS network monitoring tool on CentOS 7 systems. For additional help or useful information, we recommend you to check the official LibreNMS web site.

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