🔹 Topics:

• Basic Linux commands (ls, cd, mkdir, cat, grep, chmod, etc.)

• File system structure (/etc, /var, /usr, /home, etc.)

• User management & permissions

• Process management (ps, top, kill)

• Package managers (apt, yum)

• Networking basics (ping, netstat, curl, scp)

• SSH & remote access

• Shell scripting (bash scripts)

🐙 2. Git & Version Control

🔹 Topics:

• Git basics (init, clone, add, commit, push, pull)

• Branching & merging

• Pull requests & conflict resolution

• Git workflows (Gitflow, trunk-based)

• GitHub / GitLab / Bitbucket usage

🐳 3. Docker (Containerization)

🔹 Topics:

• What are containers vs VMs

• Docker architecture

• Images, containers, registries

• Dockerfile (build custom images)

• Docker Compose (multi-container apps)

• Volumes & networks

• Best practices (multi-stage builds, lightweight images)

☸️ 4. Kubernetes (Orchestration)

🔹 Topics:

• What is Kubernetes & why it’s needed

• Cluster architecture (Master, Node, etc.)

• Core concepts:
• Pod
• Deployment
• Service
• ReplicaSet
• Namespace
• ConfigMap / Secret

• Networking & Ingress

• Persistent Volumes

• Helm (package manager for K8s)

⚙️ 5. CI/CD (Automation Pipelines)

🔹 Tools to Learn:

• Jenkins (most common)

• GitHub Actions / GitLab CI / CircleCI

🔹 Topics:

• CI/CD fundamentals (Continuous Integration & Continuous Delivery)

• Pipeline stages (build → test → deploy)

• Webhooks & triggers

• Jenkinsfile (declarative pipelines)

• Docker integration in pipelines

• Deploy to servers or Kubernetes from pipelines

🧰 6. Infrastructure as Code (IaC)

🔹 Tools:

• Terraform (industry standard)

• Ansible (configuration management)

• CloudFormation (AWS only, optional)

🔹 Topics:

• Terraform:
• Providers, Resources, Variables, Modules
• State files
• Terraform Cloud

• Ansible:
• Playbooks, Roles, Inventory, YAML syntax

☁️ 7. Cloud Platforms

🔹 Choose one (start with AWS):

• AWS (best for learning)

• GCP / Azure (optional after AWS)

🔹 AWS Topics:

• EC2 (compute)

• S3 (storage)

• VPC (networking)

• IAM (access control)

• ECR (Docker registry)

• ECS / EKS (container orchestration)

• CloudWatch (monitoring)

• Route53 (DNS)

🔒 8. Monitoring & Logging

🔹 Tools:

• Prometheus + Grafana (metrics)

• ELK Stack (Elasticsearch, Logstash, Kibana)

• Loki (logging)

• AWS CloudWatch or Datadog (optional)

🔹 Topics:

• Metrics, alerts, dashboards

• Application logs vs system logs

• Setting alerts for failures or threshold breaches

🧠 9. Security & Networking in DevOps

🔹 Topics:

• Basics of networking (IP, DNS, Load Balancer)

• SSL/TLS, HTTPS

• Firewalls, security groups

• Secrets management (Vault, K8s secrets)

• Role-based access (IAM)

• Docker & K8s security best practices

🧩 10. Advanced DevOps Concepts

🔹 Topics:

• GitOps (ArgoCD / FluxCD)

• Service Mesh (Istio / Linkerd)

• Canary & Blue-Green Deployments

• Observability (Tracing + Metrics + Logs)

• Scaling strategies (Auto-scaling, Horizontal Pod Autoscaler)

• Chaos Engineering (Gremlin / Litmus)