Mr Salih

Home / DevOps / Guide Technical Guide 6 min read Intermediate Table of Contents 01 Debugging SSH Connection Timeout in Jenkins CI/CD Pipeline: Configuring Environment Variables and Tunneling 02 Problem Statement 03 Prerequisites 04 Root Cause 05 Solution 06 Verification 07 Common Errors 08 Conclusion Pro Tip Running scripts with Administrator privileges is recommended to avoid permission errors, especially when modifying system files or registries. Photo by Philipp Hubert on Unsplash # Debugging SSH Connection Timeout in Jenkins CI/CD Pipeline: Configuring Environment Variables and Tunneling # Pr...

Home / DevOps / Guide Technical Guide 21 min read Intermediate Pro Tip Running scripts with Administrator privileges is recommended to avoid permission errors, especially when modifying system files or registries. Photo by Roma Kaiuk🇺🇦 on Unsplash # Automating SSL Certificate Renewal for Apache on Ubuntu Server Problem Statement This guide solves the issue of manually renewing SSL certificates for Apache on Ubuntu Server, which can lead to certificate expiration and subsequent service downtime. Prerequisites * Ubuntu Server 20.04 LTS (or later) * Apache 2.4 (or later) * OpenSSL 1.1.1 (or later) * Certbot 1.16.0 (or later) * A domain name with a valid SSL certificate Root Cause SSL certificate renewal is a manual process that requires frequent checks on certificate expiration dates and subsequent renewal. This process is prone to human err...

Home / DevOps / Guide Technical Guide 15 min read Intermediate Pro Tip Running scripts with Administrator privileges is recommended to avoid permission errors, especially when modifying system files or registries. Photo by Pawel Czerwinski on Unsplash # Resolving the 'java.lang.OutOfMemoryError: Java Heap Space' Error in Java Applications Problem Statement This article addresses the issue of the 'java.lang.OutOfMemoryError: Java Heap Space' error, which occurs when a Java application runs out of memory and cannot allocate space for new objects. This error is common in applications that use large amounts of memory, such as data processing, machine learning, or big data analytics. Prerequisites To follow this guide, you will need: Java Development Kit (JDK) 8 or later, installed on your system. Apache Maven 3.3 or later, fo...