Tutorials

This tutorial demonstrates how to install and configure Fail2ban on Ubuntu 20.04 and 18.04 to enhance Linux server security. Fail2ban protects servers from brute force and other automated attacks by scanning server logs for malicious activity and banning offending IPs via the system's firewall. After installation, configuration involves creating a '.local' file for specific adjustments, setting parameters like 'bantime,' 'findtime,' and 'maxretry,' and defining jail services for different use cases.

The tutorial provides steps on how to install Chatwoot, an open-source real-time messaging platform, on Ubuntu 20.04 | 18.04. After the installation, the server can be accessed at a specific IP address followed by port #3000. Users are advised to configure the essential environment variables, Mailer, and cloud storage configuration for the proper functioning of Chatwoot. The platform can be integrated with various chat apps and channels like Facebook and Sendgrid.

This tutorial guides students and new users in setting up two-factor authentication for SSH on Ubuntu 20.04 | 18.04 using Google Authenticator. The process involves installing Google Authenticator, adjusting the SSH Server's default configuration file, and updating the PAM SSH configuration file. Once setup, the user will be prompted for a randomly generated OTP each time they try to log in, supplying an extra layer of security.

The tutorial guides new users on how to improve Ubuntu security with Google's multi-factor authentication. It involves installing the Google PAM package and the Google Authenticator app on the mobile device. After installing, Ubuntu's configuration file is opened and updated. The setup prompts a series of questions to customize the security, such as time-based tokens and rate-limiting. This additional layer of security requires a third one-time code for logging in.

This tutorial guides students and new users on installing Apache Spark on Ubuntu 20.04 or 18.04. Apache Spark, an open-source framework, supports SQL queries, data streaming, machine learning, and graph processing. Installation involves setting up the Java JDK, Scala, and then Apache Spark. Verification steps ensure proper installation of each component.

The tutorial guides on how to install the UVdesk helpdesk system on Ubuntu 20.04 and 18.04. The installation includes setting up Apache, MariaDB, and PHP modules, creating a UVdesk database, and configuring Apache2. Parts of the process involve downloading UVdesk packages from GitHub and enabling appropriate permissions. The process concludes by setting up the UVdesk site via a web browser.

This tutorial guides users through the process of backing up and restoring MariaDB databases and data files on Ubuntu using Mariabackup. Mariabackup, an open-source tool introduced in MariaDB 10.1, does "hot online" backups of InnoDB tables and other files. The tutorial includes step-by-step instructions on installing Mariabackup, creating backups, and restoring data from these backups.

This tutorial guides students and new users on how to list or show all services running or stopped on Ubuntu 20.04 | 18.04 LTS. The guide explains the use of the systemctl command-line utility, which manages systemd services on Linux systems. The tutorial also includes instruction for starting, stopping, enabling, disabling, and checking service status, as well as listing all services. It concludes with how to manage services on previous Ubuntu versions using the service command.

This is a detailed guide on installing and configuring WildFly, a lightweight Java-based application runtime, on Ubuntu 20.04/18.04. The guide includes installing Java and OpenJDK, creating a service account for WildFly, downloading and configuring WildFly packages, making Wild automatically at boot time, and setting up a user account to manage the app server web console. It concludes by allowing remote access to the admin console.

The tutorial guides on installing PHP Composer on Ubuntu 20.04/18.04. PHP Composer is a tool for managing package dependencies for PHP-based projects. It helps in installing and managing PHP applications. Prior requirement for installation is having PHP installed. Post-installation, commands can be run to test whether composer is successfully installed.

This tutorial provides a step-by-step guide on how to install Apache Ant, a Java library and tool that automates the process for compiling, testing, and running Java applications, on Ubuntu 20.04 | 18.04. Ways to install include via Apt, SDKMAN, or manual download; associated steps each method entails, such as installing Java through OpenJDK, creating symbolic links, or activating environment variables, are also described.

This tutorial instructs users on installing Apache Groovy on Ubuntu 20.04 or 18.04. Apache Groovy is a dynamic language for the Java platform that aids developers in building programs with simple syntax. The guide details the process of updating the server, installing OpenJDK 8, downloading and installing Groovy through an install script, and enabling the Groovy environment.