Docker Compose simplifies multi-container application deployment using a declarative YAML file. This guide demonstrates deploying a full-stack web application (Nginx, Node.js API, MySQL, Redis) with Docker Compose on Ubuntu 26.04 LTS, covering real-world patterns like named volumes, custom networks, health checks, and environment variable management. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 […]
URL: https://www.progressiverobot.com/kotlin-class-constructor/ In this tutorial, we'll be discussing the [Object Oriented Programming](/community/tutorials/oops-concepts-java-example) concepts of Kotlin. We'll discuss Kotlin Class in detail. We will also look at kotlin constructors, access modifiers and abstract class. Kotlin Class !kotlin class, kotlin constructor A class is a blue print defined which groups functions and properties. Classes in Kotlin are […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-4709 Related CVEs: CVE-2019-20446 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
FreeIPA is an open-source security solution for Linux which provides account management and centralized authentication, similar to Microsoft’s Active Directory. In this tutorial, we will be installing the FreeIPA server on a CentOS 7 server. You can then configure client machines, allowing FreeIPA users to log in with their IPA credentials.
Control groups, or cgroups, is a kernel feature introduced in CentOS 6 to provide a new way of limiting access to system resources for processes.
This tutorial explains how to create a self-signed SSL certificate, how to add it to your server, and how to configure the SSL file to display the certificate to the world. A SSL certificate is a way to encrypt a site’s information and create a more secure connection. Certificate Authorities can issue SSL certificates that verify the server’s details while a self-signed certificate has no 3rd party corroboration. These steps are for setting up an SSL certificate on Nginx for a CentOS server.
Introduction Deploying install go on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian 10 Buster […]
Managing an OpenLDAP system can be difficult if you do not know how to configure your system or where to find the important information you need. In this guide, we’ll demonstrate how to query your OpenLDAP server for crucial information and how to make changes to your running…
El autor seleccionó la Free and Open Source Fund para recibir una donación como parte del programa Write for DOnations. Los registros de sistemas son un componente extremadamente importante…
ngx_pagespeed, or just pagespeed, is an Nginx module designed to optimize your site automatically by reducing the size of its resources and hence the time the clients’ browsers need to load it. This article will guide you through the installation and configuration of the pagespeed module for Nginx. It’s important to know that Nginx does not support *Dynamic Loading of Modules* available in other web servers such as Apache. Since Nginx doesn’t support this feature, you need to build Nginx from so
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