DevOps Learning Journey - Full Cycle Project

This repository documents my hands-on learning journey through a series of DevOps tasks, from building a simple web server to deploying and monitoring it in a cloud environment.

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Step 1: Building a Go HTTP Server 🌐

Objective: Create a foundational, standalone HTTP server.

• Technology: Go (Golang)
• Key Concepts: net/http standard library, request handlers, and testing with curl.

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Step 2: Containerization with Docker 🐳

Objective: Package the Go application into a portable Docker container.

• Technology: Docker
• Key Concepts: Dockerfile basics (FROM, RUN, CMD), .dockerignore.

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Step 3: Orchestration with Docker Compose ⚙️

Objective: Simplify the management of the application service for local development.

• Technology: Docker Compose
• Key Concepts: docker-compose.yml, defining services, docker compose up/down.

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Step 4: Optimizing with Multi-Stage Docker Builds ✨

Objective: Drastically reduce the final image size for better security and efficiency.

• Technology: Docker
• Key Concepts: Multi-stage builds (FROM ... AS builder), copying artifacts between stages.

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Step 5: Intro to IaC with Terraform 🏗️

Objective: Learn the fundamentals of Infrastructure as Code (IaC) by managing a simple cloud resource.

• Technology: Terraform
• Key Concepts: IaC principles, declarative syntax (HCL), the init/plan/apply/destroy workflow.

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Step 6: Provisioning a Kubernetes Cluster ☸️

Objective: Provision a production-grade Kubernetes cluster in the cloud using Terraform.

• Technologies: Terraform, Google Kubernetes Engine (GKE)
• Key Concepts: GKE Autopilot, configuring kubectl, managing cloud APIs as code.

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Step 7: Deploying an App to Kubernetes 🚀

Objective: Deploy a containerized application to the GKE cluster.

• Technology: Kubernetes
• Key Concepts: Kubernetes manifests (YAML), Deployment and Service objects, type: LoadBalancer.

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Step 8: Infrastructure Cleanup 🧹

Objective: Learn to properly tear down cloud infrastructure to manage costs.

• Technology: Terraform
• Key Concepts: terraform destroy, deletion_protection as a safety feature.

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Step 9: Deploying a Local Monitoring Stack 📡

Objective: Run a local observability backend to receive telemetry data.

• Technologies: Docker Compose, Jaeger
• Key Concepts: The role of an observability backend, using Docker Compose for local infrastructure, and debugging container startup issues.

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Step 10: Instrumenting an Application 🔬

Objective: Modify the Go application to generate and export traces to the monitoring backend.

• Technology: Go, OpenTelemetry
• Key Concepts: Application instrumentation, using OpenTelemetry SDKs, configuring an exporter (OTLP), and understanding Docker container networking.