Built by an Engineer
For Engineers

Who This Platform Is For

Master DevOps is built for software engineers who are preparing for DevOps, SRE, Cloud Engineering, or Platform Engineering interviews. Whether you are a developer looking to move into infrastructure, a sysadmin transitioning to cloud-native technologies, or an experienced DevOps engineer refreshing your knowledge before a senior role interview — this platform has you covered.

The content is deliberately practical. You will not find theoretical definitions copied from Wikipedia. Every Q&A, command, and explanation comes from real interviews and production environments. The level of detail matches what hiring managers at product-based companies actually test for — not what courses teach you to memorise.

What the Platform Covers

The Master DevOps interview kit covers 19 tools and concepts across the full DevOps ecosystem:

• Version Control: Git branching strategies, rebase vs merge, reflog, interactive rebase, cherry-pick, and GitHub Actions CI pipelines
• Containers & Orchestration: Docker internals, multi-stage builds, Kubernetes architecture, pod lifecycle, RBAC, HPA, network policies, Helm charts
• CI/CD & GitOps: Jenkins declarative pipelines, GitHub Actions with OIDC authentication, ArgoCD GitOps patterns, blue-green and canary deployments
• Cloud & Infrastructure: AWS VPC architecture, IAM roles and IRSA, EKS node groups, Terraform state management, modules, and remote backends
• Observability: Prometheus data model, PromQL queries for the four golden signals, Grafana dashboards, alerting rules, and SLO-based burn rate alerts
• SRE Practices: SLI/SLO/SLA definitions, error budgets, incident response lifecycle, blameless post-mortems, and toil reduction strategies
• Linux & Scripting: System performance analysis, process management, cron scheduling, Bash scripting best practices, and log analysis with grep, awk, and sed

The Author's Background

Master DevOps is built and maintained by a practising DevOps Engineer with hands-on experience across the full cloud-native stack. Day-to-day work includes designing and maintaining Kubernetes clusters on AWS EKS, building CI/CD pipelines with GitHub Actions and Jenkins, writing Terraform modules for repeatable infrastructure provisioning, and implementing SRE practices including SLO-based alerting and blameless incident post-mortems.

All content is reviewed against real interview questions encountered across hiring processes at product-based companies and technology consultancies. When a new question comes up in a real interview that is not already covered here, it gets added — this platform grows alongside the community it serves.

How This Platform Is Supported

Master DevOps is entirely free to use — no login required, no paywalls, no course purchases. The platform is supported by Google AdSense advertising and optional community support via Ko-fi. If you find the content useful, the best ways to support the project are to share it with your network, follow @master.devops on Instagram, or buy a coffee on Ko-fi. Every bit of support goes directly into building more guides, more Q&As, and better tooling.

Our Commitment to Quality

Every answer on this site is written to match the standard expected by a senior-level interviewer — not a basic definition, but a complete explanation including the mechanism, the production context, the trade-offs, and a real command or code example where relevant. Shallow answers that could be memorised from a documentation page are deliberately avoided.

Content is updated as tools evolve. When Kubernetes releases a significant version update, when Terraform introduces breaking changes, or when GitHub Actions adds a new capability that appears in interviews — the relevant guides are updated to reflect the current state. Last major review: April 2026.