I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.
I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.
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The tutorial would benefit from discussing SSH as an operational access mechanism rather than just a connectivity tool. In production environments, teams typically avoid password-based logins altogether, disable direct root access, standardize on Ed25519 keys, and manage authorized keys through configuration management or IAM-backed solutions. It is also useful to mention host fingerprint verification, SSH client configuration (
~/.ssh/config) for managing large server fleets, session auditing, and short-lived credentials to reduce the blast radius of compromised keys. These practices become increasingly important as organizations move from managing a handful of servers to operating hundreds of ephemeral cloud instances and Kubernetes worker nodes.