DevOps & Cloud Engineering

File system, permissions, processes, systemd, and bash scripting.

• The Linux Command Line (free book)docfree
• OverTheWire: Bandit (hands-on Linux)linkfree
• Ryan's Tutorials: Linux Tutorialcoursefree

• File system navigation & permissions
• Process management & systemd
• Bash script: automate a backup
• Cron jobs & scheduled tasks

TCP/IP, DNS, HTTP/TLS, load balancers, firewalls: what happens when you hit Enter.

• Cloudflare Learning: How the Internet Worksarticlefree
• Professor Messer: CompTIA Network+ (free videos)coursefree

• DNS lookup & traceroute
• TLS handshake & certificate chain
• Configure a firewall (ufw)

Scripting, file handling, subprocess, and calling APIs: the glue language of DevOps.

• Automate the Boring Stuff with Python (free)docfree
• Python for DevOps (O'Reilly)coursepaid

• Script to monitor disk usage & alert
• Parse JSON logs with Python
• Call GitHub API from a script

Images, containers, Dockerfile, Docker Compose, networking, and volumes.

• Docker Official Getting Starteddocfree
• Bret Fisher: Docker Mastery (Udemy)coursepaid

• Multi-stage Dockerfile
• Docker Compose: app + db + cache
• Container networking (bridge/host)
• Volumes & bind mounts

Pods, deployments, services, ingress, ConfigMaps, Helm charts.

• Kubernetes Official Tutorialsdocfree
• Mumshad Mannambeth: CKAD (Udemy)coursepaid
• Play with Kubernetes (free lab)linkfree

• Deploy a 3-tier app on k8s
• Ingress & TLS termination
• Helm chart for your app
• Rolling update & rollback

Build, test, and deploy pipelines: triggered on every push to main.

• GitHub Actions Docsdocfree
• GitHub Skills: CI/CD coursecoursefree

• Lint + test + build pipeline
• Docker push to registry on tag
• Deploy to k8s on merge to main

EC2, S3, RDS, ECS, Lambda, IAM, VPC: the services every AWS engineer lives in.

• AWS Skill Builder: Free Coursescoursefree
• AWS Free Tier (hands-on)linkfree
• Stephane Maarek: AWS SAA-C03 (Udemy)coursepaid

• Launch EC2 & configure security group
• S3 static site with CloudFront CDN
• RDS PostgreSQL with VPC
• Lambda + API Gateway serverless function

Provision cloud infrastructure declaratively, manage state, and write reusable modules.

• HashiCorp Terraform Tutorialscoursefree
• Terraform: Up & Running (O'Reilly)coursepaid

• Provision AWS VPC + EC2 with Terraform
• Remote state in S3 + DynamoDB lock
• Reusable module for a web app stack

Prometheus, Grafana, ELK Stack, and alerting for production systems.

• Prometheus Docsdocfree
• Grafana Getting Starteddocfree
• Google SRE Book (free)docfree

• Prometheus scrape metrics from Node app
• Grafana dashboard: latency + error rate
• PagerDuty alert on p99 spike