Author: Rajesh Kumar

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday Landmark, stock market…

In GitLab 18.0, the “Locked Files” feature under the Code section is specifically designed to help teams working with binary files or non-mergeable assets (e.g., images, CAD drawings, videos, large…

Here’s a detailed step-by-step tutorial for each option in the GitLab Plan Section (GitLab Cloud, v18.0) — tailored for project planning, agile workflows, documentation, and requirements management. Recommended Planning Flow…

Understanding the hierarchy, precedence, sequencing, and parallelism in GitLab CI/CD pipelines is crucial to mastering how your jobs run, how to optimize them, and how GitLab decides what to execute…

🔍 Example You Gave: 🔹 Explanation: Variable Purpose CI_REGISTRY_IMAGE Built-in CI variable — the full image path for your project’s Container Registry (e.g., registry.gitlab.com/mygroup/myproject) CI_COMMIT_REF_SLUG Built-in CI variable — a…

Basic stages, jobs, scripts ✅ Artifacts + coverage ✅ Parallel jobs ✅ Docker builds + Registry push ✅ Manual and scheduled deployments ✅ Feature-specific deployment environments ✅ Security: SAST, Secret…

Here’s a comprehensive, up-to-date tutorial on GitLab 18.0 entity structure as of May 2025, covering: This includes definitions, scopes, use cases, comparisons, and tutorial instructions for setup across both GitLab…

Management of educational assets is one of the major steps to having an organized learning environment. These assets could be schools and educational institutions, which usually have a great deal of resources,…

Step 1 – Setup PostgreSQL server Step 2 – Login to PostgreSQL server & create user/db & grant perm Step 3 – Download PostgreSQL driver cd /var/lib/rundeck/libextsudo wget https://jdbc.postgresql.org/download/postgresql-42.7.3.jarsudo chown…

Here’s a step-by-step guide to correctly create alerts via New Relic API, with proper handling of: This will help you avoid common errors like using the wrong entity type or…

Here’s a step-by-step guide to add and use a Windows node in Rundeck installed on a Linux server, using WinRM (Windows Remote Management), which is the most common way to…

🔧 Rundeck Configuration Options 1. General Settings Property Description Example loglevel.default Sets the default log level for jobs. Options: ERROR, WARN, INFO, VERBOSE, DEBUG. INFO rdeck.base Specifies the base directory…

Here’s a detailed tutorial for Authentication and Authorization in Rundeck Community Edition. This guide includes setup for both file-based authentication and role-based access control (RBAC) using ACL policy files. 🔐…

Here’s a comprehensive tutorial on all valid Terraform module “source” Git URL patterns, with clear examples (no Drivemode references), so you can master using modules from GitHub, GitLab, Bitbucket, and…

The fusion of artificial intelligence and physics is unlocking a new era of scientific exploration. What once required decades of experimentation and theoretical contemplation can now be accelerated through machine…

Here is a step-by-step tutorial on how to work with the New Relic API, including how to create an alert condition using the API. 🚀 New Relic API Guide –…

Here is a comprehensive tutorial for New Relic Log Search covering all the items you’ve listed, with real-world examples specifically tailored for Linux and Apache logs. The queries assume your…

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday Landmark, stock market…

The Rundeck Project SCM Export and SCM Import features are designed to version control your job definitions and project configuration, by integrating Rundeck projects with a source control management system…

Here’s a complete guide to running Ansible Playbooks using Rundeck, covering all supported methods, including what you’ve done, plus troubleshooting options and best practices. ✅ Goal Run an Ansible Playbook…

🛡️ What is Fortify? Fortify is a Static Application Security Testing (SAST) tool developed by Micro Focus (now part of OpenText). It helps developers and security teams identify vulnerabilities early…

System Requirements for Rundeck Supported Operating Systems: Amazon EC2 Supported Database. Supported Log store Others Important Network access How to Install Rundeck OSS in Ubtunu? Step 1- Install Java $…

Excellent question. When we say AWS ALB “downgrades HTTP/2 → HTTP/1.1”, it means that although the client connects to ALB over HTTP/2, ALB then connects to your backend (e.g., EKS…

That’s a great question. The reason it’s hard to visually spot the difference in a gRPC request is because it’s a binary protocol over HTTP/2, unlike human-readable formats like REST…

Here’s a complete and standalone guide to gRPC, suitable for beginners and intermediate engineers who want to use gRPC in real-world applications, especially in a cloud-native or AWS-based architecture. 🌐…

This guide covers the most common communication protocols used in modern cloud-native architectures, compares their capabilities, and discusses when to use each. It also analyzes support and limitations within the…

Rundeck Student Assignments (Windows Local Node) 📝 Setup Prerequisites: 🎓 Assignment List Assignment 1: Hello World in PowerShell Objective: Run a basic PowerShell script as a Rundeck job. Assignment 2:…

Rundeck Student Assignments (Local Node Only) — Assignment 1: Hello World Job Objective: Learn to create and execute your first Rundeck job. Assignment 2: Disk Usage Check Objective: Monitor disk…

✅ What is Rundeck? Rundeck is an open-source tool used for Runbook Automation, designed to help DevOps teams, SREs, and IT operations teams automate routine tasks, reduce toil, and manage…