Install Elgg on RHEL and CENTOS 8 for Online Social Networking Site

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In this post, you will learn how to install Elgg on RHEL and CentOS 8. Elgg is an open source social networking software that provides individuals and organizations with the components needed to create an online social environment. It offers blogging, microblogging, file sharing, networking, groups and a number of other features. It was also the first platform to bring ideas from commercial social networking platforms to educational software.

Step 1: Install LAMP Stack

Elgg requires MySQL, PHP, and a web server. So we need to install LAMP stack before Elgg installation.

i: Install Apache webserver
dnf install httpd -y

Now start and enable apache service on boot.

systemctl start httpd

systemctl enable httpd

Adding apache ports in the firewall.

firewall-cmd --add-port={80/tcp,443/tcp} --permanent
firewall-cmd --reload

ii: Install PHP
dnf install php php-common php-pecl-apcu php-json php-cli php-pear php-pdo php-mysqlnd php-pgsql php-gd php-mbstring php-xml -y

iii: Install MYSQL
dnf install mysql-server -y

Start and enable MYSQL service on boot.

systemctl start mysqld
systemctl enable mysqld

Complete MYSQL installation

mysql_secure_installation
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

Step 2: Create a MySQL database for Elgg

Log in to the MySQL console using below command and type your password when asked.

mysql -u root -p

now create a new database

CREATE DATABASE elgg;

Now create a new MySQL user and grant it privileges on the created database. You can replace username and password with the username and password of your own choice.

CREATE USER 'database_user'@'localhost' IDENTIFIED BY 'user_password';
GRANT ALL PRIVILEGES ON database_name.* TO 'database_user'@'localhost';
FLUSH PRIVILEGES;

Exit the MySQL console.

exit

Step 3: Download and Install Elgg on CentOS 8 / RHEL 8

Download Elgg using below commands

cd /var/www/html
wget https://elgg.org/about/getelgg?forward=elgg-3.1.1.zip

Now Unzip the downloaded archive

unzip getelgg?forward=elgg-3.1.1.zip
mv ./elgg-3.1.1/* .
rm -rf getelgg?forward=elgg-3.1.1.zip
rm -rf elgg-3.1.1

Create a data directory for Elgg in /var/www/html directory

mkdir -p /var/www/html/data

Set the appropriate file permissions

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

Step 4: Apache Configuration for Elgg

Create an Apache virtual hosts configuration file.

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

and place below lines in that file.

<VirtualHost *:80>
DocumentRoot /var/www/html/
<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>

Save changes and exit.

Restart Apache server.

systemctl restart httpd.service

Step 5: Install Elgg on CentOS 8 / RHEL 8 (using the web interface)

Finally, browse below URL to access

http://YOUR-SERVER-IP/
OR
http://YOUR-DOMAIN-NAME

Click Next and enter the Database and its user details.

Click Next and enter the required details.

Once again click Next button and create your Admin Account.

Finally, you will see below page, Click on “Go to Site” button and start your work.

So, that is it. Hope you like it.

Also, you can read How to create an Nginx Server block on CentOS 8 / RHEL 8 / Oracle Linux 8?

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