Install Elgg on CentOS 7
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 -y systemctl enable httpd.service systemctl start httpd.service
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=https firewall-cmd --reload
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm sudo yum install mysql-server -y
Complete the MySQL installation.
systemctl enable mysqld.service systemctl start mysqld.service sudo 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: password Re-enter new password: password Remove anonymous users? [Y/N] Y Disallow root login remotely? [Y/N] Y Remove test database and access to it? [Y/N] Y Reload 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 http://rpms.remirepo.net/enterprise/remi-release-7.rpm yum -y install yum-utils yum-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.
mysql>CREATE DATABASE elgg;
Create a new MySQL user and grant it privileges to the newly created database. You can replace
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/html wget https://elgg.org/download/elgg-2.3.7.zip
Unzip the downloaded archive and move the files to the root of the Apache web server.
yum install unzip -y unzip elgg-2.3.7.zip mv ./elgg-2.3.7/* . rm -rf elgg-2.3.7.zip rm -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
example.com with your own domain name.
<VirtualHost *:80> DocumentRoot /var/www/html/ ServerName example.com <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.
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.
Next, enter the administrator credentials of your choice and press
Next. At this point the installation is complete.
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.