The OTRS (CE) Ticketing System is an open-source help desk and customer service software that can be used to manage and track customer inquiries, complaints, and requests. In this article, we will show you how to install the OTRS (CE) Ticketing System on Rocky Linux.

Before you start, you need to make sure that your system meets the following requirements:

• Rocky Linux 8
• Apache or Nginx web server
• MariaDB or MySQL database server
• PHP 7.4 or higher

Once you have verified that your system meets the requirements, you can proceed with the installation of the OTRS (CE) Ticketing System.

The first step is to install the LAMP (or LEMP) stack, which includes the Apache (or Nginx) web server, the MariaDB (or MySQL) database server, and the PHP scripting language.

To install the LAMP stack on Rocky Linux, you can use the dnf package manager and run the following commands:

sudo dnf install httpd mariadb-server mariadb-client
sudo dnf install php php-mysqlnd php-pgsql
sudo dnf install mod_perl mod_php

These commands will install the Apache web server, the MariaDB database server, the PHP scripting language, and the necessary PHP modules for OTRS.

Once the LAMP stack is installed, you need to start the Apache (or Nginx) and MariaDB services and enable them to start automatically at boot time by running the following commands:

sudo systemctl start httpd
sudo systemctl start mariadb
sudo systemctl enable httpd
sudo systemctl enable mariadb

Next, you need to secure the MariaDB installation by running the mysql_secure_installation script and following the on-screen instructions. This script will prompt you to set a root password, disable anonymous users, and disallow remote root login.

Once the MariaDB installation is secured, you need to create a database and a user for the OTRS (CE) Ticketing System. To do this, you can log in to the MariaDB shell as the root user and run the following commands:

mysql -u root -p

CREATE DATABASE otrs;
GRANT ALL PRIVILEGES ON otrs.* TO 'otrs'@'localhost' IDENTIFIED BY 'your_password';
FLUSH PRIVILEGES;

These commands will create a database named otrs and a user named otrs with the password your_password.

Once the database and user are created, you can exit the MariaDB shell by running the exit command.

Now that the database is ready, you can download the OTRS (CE) Ticketing System files from the official website and extract them to the web root directory. To do this, you can use the wget and unzip utilities and run the following commands:

wget <https://ftp.otrs.org/pub/otrs/otrs-6.0.26.tar.gz>
tar -xvf otrs-6.0.26.tar.gz -C /var/www/html

These commands will download the OTRS (CE) Ticketing System files and extract them to the `/var

Once the OTRS (CE) Ticketing System files are extracted, you need to set the correct ownership and permissions for the files and directories. To do this, you can run the following commands:

sudo chown -R apache:apache /var/www/html/otrs
sudo chmod -R o+rw /var/www/html/otrs

These commands will set the ownership of the OTRS files to the Apache user and group, and set the correct permissions for the files and directories.

Now that the files and directories have the correct ownership and permissions, you can open a web browser and navigate to the URL http://your_server_ip/otrs/installer.pl to start the OTRS (CE) Ticketing System installation wizard.

In the installation wizard, you will be prompted to provide the database details and the administration login information. You need to enter the otrs database name, the otrs database user, and the password that you set earlier. You also need to enter the desired login credentials for the OTRS (CE) Ticketing System administrator.

Once you have provided the necessary information, you can click on the Next button to start the installation process. The installation wizard will check the system requirements, create the necessary database tables, and configure the OTRS (CE) Ticketing System.

Once the installation process is complete, you will be redirected to the OTRS (CE) Ticketing System login page, where you can log in with the administrator credentials that you provided earlier.

In conclusion, installing the OTRS (CE) Ticketing System on Rocky Linux involves installing the LAMP (or LEMP) stack, securing the MariaDB installation, creating a database and user for OTRS, downloading and extracting the OTRS files, setting the correct ownership and permissions, and running the installation wizard. Once the installation is complete, you can log in to the OTRS (CE) Ticketing System and start managing customer inquiries and requests.