Hari Sekhon - Knowledge Base from 20 years in DevOps, Linux, Cloud, Big Data, Security, AWS, GCP etc
A personal, gradually published knowledge base of advanced DevOps, Linux, cloud, big-data and security tips, tricks, debugging notes and fixes, accumulated over 20 years of consulting work.
This repository is the author's personal technical knowledge base, migrated gradually from a private collection built over 20 years working in DevOps, Linux, cloud platforms, big data and security consulting. It focuses on advanced knowledge, tips and tricks, and debugging and fixes rather than introductory material, with references to official documentation and books for readers who want to cover the basics first.
Content is organized by topic area, including operating systems, git, cloud platforms, containerization and Kubernetes, programming languages and build systems, infrastructure as code, CI/CD, relational and NoSQL databases, coordination and messaging services, data formats and the Hadoop ecosystem, security, virtualization, networking and monitoring. Some pages are still stubs pending migration from the author's private notes, and the repository points to the author's other GitHub projects for deeper, code-level material on related topics.