Mastering DevOps: My Journey and Projects

As someone exploring real-world DevOps workflows, I recently followed and extended a corporate-level CI/CD pipeline tutorial that walks through deploying Jenkins, SonarQube, Nexus, and Kubernetes on AWS EC2. While the base tutorial provided solid guidance, I added my own twists and documentation to make the setup production-ready. In this blog, I’ll walk you through every step—from provisioning infrastructure to building a 13-stage Jenkins pipeline, and finally setting up monitoring with Prometheus and Grafana. To keep it clear and structured, this blog is divided into 8 sections : Infrastructure Setup – Provisioning EC2 instances and preparing the environment Cluster Configuration – Setting up Kubernetes master and worker nodes Tool Installation – Installing Jenkins, Docker, SonarQube, Nexus, and other tools Jenkins Configuration – Plugin setup, credentials, tool integrations CI/CD Pipeline Breakdown – Full Jenkins pipeline for code checkout, build, scan, and depl...

 Connect Ubuntu server as a Slave - Using Private Key Hi everyone ! In my Internship project, I had to configure a Ubuntu Instance as a Slave/Node to run a Jenkins job. That Instance runs in a AWS server. In this blog I'll show in simple steps how I configured that instance as a slave in Jenkins. I needed the following details about the instance.     IP of the Ubuntu instance.    User name (which is configured in the instance)    My private key  Step 1 :  Go to Manage Jenkins from the left menu Step 2 : Select Manage Nodes Step 3 : Select New Node and enter the node details.            1.  Name  -  Name of the node. This name will get displayed in the main view, under nodes section.  2. Description - A Description. Better to include details about RAM, CPU storage etc.  3. # of executors - The maximum number of concurrent builds that Jenkins may perform in this node.  4. Rem...