Freaks City

Jenkins Installation This guide covers Jenkins deployment using Docker with Blue Ocean UI, including configuration of build tools and private registry integration. Docker Setup for Jenkins Create required directories and start the Jenkins container: mkdir -p ~/jenkins/jenkins_home mkdir -p ~/jenkins/build_tools chmod -R 777 ~/jenkins docker ru ...

Channel Initialization and Deserialization Entry Point The Channel class constructor invokes setup() to initialize the communication channel. Within this method, a background thread is spawned via new ReaderThread(receiver).start() to handle incoming data. @Override public void setup(Channel channel, CommandReceiver receiver) { this.channel ...

Jenkins OverviewJenkins is an open-source automation server written in Java that helps automate the building, testing, and deployment of software. It provides hundreds of plugins to support building, deploying, and automating any project. Originally known as Hudson, Jenkins has evolved into a powerful CI/CD tool.Key Features:Open-source and fre ...

System Prerequisites Before installing Jenkins, ensure your Linux environment has the necessary Java Runtime Environment (JRE) or Java Development Kit (JDK). Modern versions of Jenkins (starting from 2.357 and LTS 2.361.1) require Java 11 or Java 17. Installing JDK 17 The following script automates the download and configuration of OpenJDK 17. ...

Target Setup Download the target machine image from: https://download.vulnhub.com/jarbas/Jarbas.zip Configure the virtual machine in NAT mode to reside on the same subnet as the attacking system. Attacker IP (Kali): 192.168.88.133 Information Gathering Host Discovery Perform subnet scanning to identify active hosts: sudo nmap -sn 192.168.88.0/2 ...

Recent time due to the pandemic provided a lot of free time. I had previously done some learning about Docker, but kept running various commands without much progress. Recently, I revisited the topic and want to share some issues encountered along the way. Ubuntu is installed on a desktop machine, and I found virtual machines too cumbersome. I ...

Jenkins sits at the heart of the DevOps toolchain, and CI/CD pipelines require writing Pipeline scripts. Getting started with Jenkins is straightforward—after a quick look at the documentation, concepts like agent, stages, and steps become clear, and you can quickly scaffold a pipeline. However, when filling in the details, particularly how to ...

Testing Shifts and Continuous Integration Modern software development practices involve testing early in the lifecycle (shift-left) and extending testing into production (shift-right). Continuous Integration (CI) is a core DevOps practice where developers frequently merge code changes into a central repository. Automated builds and tests run on ...

Install OpenJDK 21 Download the JDK binary: wget https://mirrors.huaweicloud.com/openjdk/21/openjdk-21_linux-x64_bin.tar.gz Extract and relocate to /usr/local: sudo tar -xzf openjdk-21_linux-x64_bin.tar.gz -C /usr/local/ ls /usr/local/jdk-21/ Update system-wide environment variables by editing /etc/profile: export JAVA_HOME=/usr/local/jdk-2 ...

Prerequisites A functional Kubernetes cluster with Traefik installed as the ingress controller. Network File System (NFS) storage mounted across all nodes to ensure Jenkins configuration survives pod restarts. A private Docker registry accessible at 192.168.0.153:5000. The base environment uses an Alpine LNP stack (PHP 5.6.31 and Nginx 1.8.1) a ...