Welcome to the Ultimate DevOps, SRE & Platform Engineering Interview Guide! This repository contains 2,200+ battle-tested, enterprise-grade interview questions and detailed answers, complete with architectural diagrams, production-grade YAML/HCL configurations, failure recovery workflows, and real-world system design case studies.
| Module / Topic | Questions | Topics Covered | Link |
|---|---|---|---|
| 🏗️ Core Concepts & SRE | 200 | DevOps Fundamentals, SRE, DORA Metrics, SLI/SLO/SLA, Error Budgets, Platform Engineering, FinOps | Explore |
| ⚡ CI/CD & GitOps | 200 | GitHub Actions OIDC, GitLab CI, Jenkins, ArgoCD, Flux, Tekton, Progressive Delivery, SLSA, SBOM | Explore |
| 📦 Containers & Kubernetes | 250 | Docker Internals, containerd, Kubernetes Control Plane, Gateway API, Karpenter, Cilium/eBPF, Helm, Troubleshooting | Explore |
| ☁️ Cloud Computing & Architecture | 250 | AWS Deep Dive, Microsoft Azure, Google Cloud (GCP), Multi-Cloud Architecture, Transit Gateway, Aurora Global DB | Explore |
| 🛠️ Infrastructure as Code (IaC) | 200 | Terraform 1.5+, OpenTofu, Terragrunt, Crossplane, Pulumi, Ansible, State Locking, Drift Detection | Explore |
| 📊 Monitoring & Observability | 200 | OpenTelemetry (OTel), Prometheus, PromQL, Grafana, Loki (LogQL), Tempo Tracing, Mimir, eBPF Profiling | Explore |
| 🔒 Networking & DevSecOps | 200 | Zero Trust Architecture, mTLS, SPIFFE/SPIRE, Kubernetes NetworkPolicies, HashiCorp Vault, Kyverno, Falco | Explore |
| 🐍 Automation & Scripting | 200 | Production Bash (set -euo pipefail), Python for DevOps (boto3, K8s Client), Go for DevOps, jq/yq CLI |
Explore |
| 🐧 Linux & System Administration | 200 | Linux Boot, Kernel Tuning, Systemd, Virtual Memory, cgroups v2, Inodes, TCP Sockets, OS Debugging | Explore |
| 🌿 Git & Version Control | 150 | Git Internals (Blobs, Trees, Commits), Interactive Rebase, Cherry-Pick, Bisect, Disaster Recovery via Reflog | Explore |
| 🏆 Best Practices & Architecture | 100 | 12-Factor App, High Availability, Disaster Recovery (RTO/RPO), Immutable Infra, Chaos GameDays | Explore |
| 🎯 Mock Interviews & Scenarios | 50 | Senior/Lead System Design Rounds, Live Outage Triage (504, OOM, DNS storms), SRE Leadership | Explore |
| TOTAL | 2,200+ | Comprehensive, Production-Ready, FAANG & Enterprise Interview Preparation |
THE MODERN DEVOPS & SRE ROADMAP
┌────────────────────────────────────────────────────────────────────────────────────────┐
│ 1. FOUNDATIONS: Linux Internals • TCP/IP Networking • Python & Bash Scripting • Git │
└──────────────────────────────────────────┬─────────────────────────────────────────────┘
▼
┌────────────────────────────────────────────────────────────────────────────────────────┐
│ 2. CONTAINERS & INFRASTRUCTURE: Docker & containerd • Kubernetes • Terraform / OpenTofu│
└──────────────────────────────────────────┬─────────────────────────────────────────────┘
▼
┌────────────────────────────────────────────────────────────────────────────────────────┐
│ 3. DELIVERY & CLOUD: Cloud Providers (AWS/Azure/GCP) • CI/CD Pipelines • GitOps (ArgoCD)│
└──────────────────────────────────────────┬─────────────────────────────────────────────┘
▼
┌────────────────────────────────────────────────────────────────────────────────────────┐
│ 4. OBSERVABILITY & RELIABILITY: OpenTelemetry • Prometheus & PromQL • Grafana • SRE │
└──────────────────────────────────────────┬─────────────────────────────────────────────┘
▼
┌────────────────────────────────────────────────────────────────────────────────────────┐
│ 5. SECURITY & GOVERNANCE: Zero Trust • SPIFFE/SPIRE • Vault • Kyverno/OPA • FinOps │
└────────────────────────────────────────────────────────────────────────────────────────┘
Tip
Recommended Interview Preparation Path:
1️⃣ Foundations: Start with Core Concepts, Linux System Admin, and Git.
2️⃣ Cloud & Modern Infrastructure: Study Containers & Kubernetes, Cloud, and Infrastructure as Code.
3️⃣ Delivery & Security: Deep-dive into CI/CD & GitOps and Networking & DevSecOps.
4️⃣ Observability & Reliability: Master Monitoring & Observability and Best Practices.
5️⃣ Real-World Simulations: Test yourself with Mock Interviews & Scenarios and Automation & Scripting.
We welcome community contributions! Please review our community guidelines:
- 📜 Contributing Guidelines: How to submit new questions, markdown standards, and PR workflows.
- 🌟 Code of Conduct: Our pledge to maintain a welcoming, inclusive, and harassment-free environment.
- 🔒 Security Policy: Vulnerability reporting procedures, SLAs, and credential safety rules.
- 📄 License: MIT License terms.
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