Install Elgg on CentOS 7

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Elgg is an open source social networking engine that allows the creation of social environments such as campus social networks and internal collaborative platforms for organizations. Elgg offers a number of social networking features including microblogging, messaging, file-sharing and groups. This tutorial will guide you through the process of installing Elgg on a CentOS 7 VPS.


This tutorial assumes that you have already setup a fresh Vultr Cloud Compute instance with CentOS 7 and have root access.

Step 1: Install Apache, MySQL, and PHP

Elgg requires MySQL, PHP, and a web server. Before you can install Elgg, you will need to install the Apache web server, MySQL, and PHP.

Install the Apache web server.

sudo yum install httpd -ysystemctl enable httpd.servicesystemctl start httpd.service

Open ports 80, (HTTP), and 443, (HTTPS), to be able to access the server from the internet.

firewall-cmd --permanent --zone=public --add-service=http firewall-cmd --permanent --zone=public --add-service=httpsfirewall-cmd --reload

Install MySQL.

wget rpm -ivh mysql-community-release-el7-5.noarch.rpmsudo yum install mysql-server -y

Complete the MySQL installation.

systemctl enable mysqld.servicesystemctl start mysqld.servicesudo mysql_secure_installation

When asked for the current password, press ENTER. During the installation, you will be asked to enter a root password. Enter a safe password. This will be the MySQL root password.

Set root password? [Y/n] Y    New password: passwordRe-enter new password: passwordRemove anonymous users? [Y/N] YDisallow root login remotely? [Y/N] YRemove test database and access to it? [Y/N] YReload privilege tables now? [Y/N] Y

The CentOS 7 repository comes with an older version of PHP (5.4). We will install PHP 7.2 from the Remi repository.

rpm -Uvh -y install yum-utilsyum-config-manager --enable remi-php72

Install PHP 7.2 along with the PHP modules required by Elgg.

yum install php php-opcache php-common php-sqlite3 php-curl php-intl php-mbstring php-xmlrpc php-mysqlnd php-gd php-xml php-cli php-zip -y

Step 2: Create a MySQL database for Elgg

Elgg will require a MySQL database. Log into the MySQL console.

mysql -u root -p

When prompted for a password, enter the MySQL root password you set in step 1. Once you are logged in to the MySQL console, create a new database.


Create a new MySQL user and grant it privileges to the newly created database. You can replace username and password with the username and password of your choice.

mysql>GRANT ALL PRIVILEGES on elgg.* to 'username'@'localhost' identified by 'password';mysql>FLUSH PRIVILEGES;

Exit the MySQL console.


Step 3: Download and Install Elgg

Download the latest version of Elgg.

cd /var/www/htmlwget

Unzip the downloaded archive and move the files to the root of the Apache web server.

yum install unzip -yunzip elgg-2.3.7.zipmv ./elgg-2.3.7/* .rm -rf elgg-2.3.7.ziprm -rf elgg-2.3.7

Create a data directory for Elgg.

sudo mkdir -p /var/www/html/data

Set the appropriate file permissions.

sudo chown -R apache:apache /var/www/html/sudo chmod -R 755 /var/www/html/

Step 4: Configure Apache for Elgg

Create an Apache virtual hosts configuration file.

sudo vi /etc/httpd/conf.d/vhost.conf

Paste the following snippet to the file, replacing with your own domain name.

<VirtualHost *:80>     DocumentRoot /var/www/html/     ServerName     <Directory /var/www/html/>          Options FollowSymlinks          AllowOverride All          Require all granted     </Directory>     ErrorLog /var/log/httpd/elgg_error.log     CustomLog /var/log/httpd/elgg_access.log combined</VirtualHost>

Restart the Apache server.

 sudo systemctl restart httpd.service

Step 5: Complete the Elgg Installation

At this point, you can proceed to the Elgg browser installer to finish the installation. Open a browser window on your computer and navigate to your domain name. This will launch the Elgg browser installer. Proceed through the installer to the Database Installation step. Here, enter the credentials of the MySQL database you created in Step 2 and proceed to the next step.

Install Elgg on CentOS 7

On the next step, enter a site name and email address of your choice. In the Site URL field, enter your domain name. In the Data Directory field, enter /var/www/html/data and proceed to the next step.

Install Elgg on CentOS 7

Next, enter the administrator credentials of your choice and press Next. At this point the installation is complete.

Install Elgg on CentOS 7

To log into the administrator panel, navigate to the following URL.


You have successfully installed Elgg on a CentOS 7 VPS and can begin setting up your own social network.

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