A practical reference library for DevOps engineers and system administrators. These guides cover the tools, commands, and infrastructure patterns used in real-world cloud environments — from day-to-day CLI workflows to full Kubernetes deployments on AWS.
Everything here comes from work on production systems: the commands we actually run, the shell setup we actually use, and the build scripts behind real environments. The notes are organized from quick lookups to full builds:
- Reference sheets for commands you use every day and want to find in seconds.
- AWS guides that walk through a single task from start to finish.
- Infrastructure deep dives that build a complete environment with scripts you can adapt.
Each guide is written to be copy-paste friendly, with placeholders clearly marked. If you’re new to DevOps, start with the Git and Bashrc cheat sheets; if you’re building on AWS, jump to the CI/CD pipeline guide.
Reference Sheets
DevOps Cheat Sheet
A consolidated quick-reference for the most commonly used DevOps commands, tools, and patterns. Covers Linux, Docker, Kubernetes, AWS CLI, and more — everything you need accessible in one place.
Git Cheat Sheet
Essential Git commands for daily development workflows. Covers setup, staging, branching, merging, remote operations, history inspection, stash, and .gitignore — organized for fast lookup, plus a section on undoing mistakes with reset, revert and reflog.
Git Merge Strategy
A structured branching and merge model for teams running dev, staging, and production environments. Reduces deployment risk and keeps your release pipeline clean and predictable.
Bashrc Cheat Sheet
Shell configuration tips, useful aliases, functions, and productivity shortcuts for your .bashrc or .zshrc. Small changes that make a big difference in daily terminal work, including how .bashrc and .bash_profile fit together.
AWS Guides
Installing Certbot on an AWS AMI Instance
Step-by-step guide for setting up free SSL/TLS certificates via Let’s Encrypt on an Amazon Linux EC2 instance. Automate cert renewals so your sites stay secure without manual intervention.
How to Build a Simple AWS CI/CD Pipeline with AWS CLI
A beginner-friendly walkthrough for standing up a basic CI/CD pipeline entirely from the AWS CLI. Covers CodePipeline, CodeBuild, and S3 artifact storage — no console clicking required.
Infrastructure Deep Dives
How to Build a Service with Private VPC, Subnets, Kubernetes Cluster & Elastic File Server
A comprehensive end-to-end guide for building a production-grade AWS infrastructure stack from scratch. Covers VPC design, private subnet segmentation, EKS cluster setup, and shared storage with EFS — fully integrated and production-ready.
Related Guides on the Blog
These longer articles cover the security and cost side of the same infrastructure:
- Kubernetes Security Best Practices for 2026: RBAC, Pod Security Standards, network policies and runtime detection, with commands.
- Serverless Security Best Practices for 2026: least-privilege Lambda roles, input validation and API protection.
- Cloud Infrastructure Migration: A 2026 Guide: planning, landing zones and cutover runbooks.
- Multi-Cloud Cost Optimization Guide for 2026: billing visibility, tagging and commitments across AWS, Azure and Google Cloud.
Need hands-on help with any of this? Our cloud computing and DevSecOps services cover AWS and Google Cloud builds, CI/CD automation and security reviews.