Category: DevOps

Create your first Java 11 program on Ubuntu 22.04 or Debian 11

Java is one of the most widely used programming languages thanks to its great versatility, portability and its ability to create robust and scalable applications. It is an object-oriented language with a large number of libraries and tools that facilitate (...)

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How to install and use Docker on Ubuntu 20.04?

Introduction Docker is a container platform that has revolutionised the way developers build, test and deploy applications. This manual will explain how to install and use Docker on Ubuntu 20.04, allowing developers to quickly and easily create application (...)

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How to scale Node.js applications with clustering

Introduction Node.js is a server-side JavaScript runtime environment used to create scalable, high-speed web applications. Scalability is a critical factor for any web application that intends to handle large volumes of traffic. One of the most popular way (...)

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How to remove images, containers and volumes from Docker

Docker is a container virtualisation tool that allows developers to create, deploy and run applications in different environments quickly and efficiently. Docker containers are software environments that contain everything needed to run an application, inc (...)

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How to create a new user and grant permissions in MySQL

Here is a detailed manual on how to create a new user and grant permissions in MySQL: Step 1: Login to MySQL To create a new user and grant permissions in MySQL, you must log in to your MySQL server. You can do this in a number of ways, but a common way is (...)

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How to configure SSH keys in Ubuntu 22.04/Debian 10

Introduction SSH is a secure network protocol used for remote server management. It is a secure way to connect to and perform operations on a server without the need to be physically present on the server. SSH keys are used to authenticate to a remote serv (...)

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How to install Ruby on Rails with rbenv on Ubuntu 22.04

rbenv is a tool for managing multiple versions of Ruby on a single system. It allows you to install, switch and manage different versions of Ruby, which is useful for projects that require specific versions of Ruby or for working with different projects th (...)

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How to create a web application using Flask in Python 3

Flask is a lightweight and flexible web framework for Python that allows you to build web applications quickly and easily. It focuses on simplicity and modularity, making it easy to learn and use for small and large projects. It requires no additional tool (...)

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How to install WordPress on Ubuntu 22.04 with LEMP

Here is the detailed manual on how to install WordPress on Ubuntu 22.04 with LEMP: Step 1: Update the Operating System Before you start installing WordPress, it is important to make sure that your Ubuntu 22.04 operating system is up to date. Open the termi (...)

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How to use Cron to automate tasks in Ubuntu 22.04/Debian 11

The Cron is a tool used to automate tasks in Unix based operating systems, such as Ubuntu 22.04 and Debian 11. With Cron, you can schedule commands to run automatically at specific times of the day, week or month. In this manual, we will explain how to use (...)

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