data/projects/cloud_infrastructure.md

Cloud Infrastructure Modernization Project

Project Overview

Project Name: Aurora Cloud Migration & Platform Engineering
Duration: 18 months
Team Size: 8 DevOps engineers + 4 Cloud architects
Status: Phase 2 (Multi-cloud deployment)

Technology Stack

• Cloud Platforms: AWS (primary), Azure (secondary), GCP (analytics)
• Container Orchestration: Kubernetes, Amazon EKS, Azure AKS
• Infrastructure as Code: Terraform, AWS CloudFormation, Pulumi
• CI/CD: GitLab CI, ArgoCD, Tekton, AWS CodePipeline
• Monitoring: Prometheus, Grafana, ELK Stack, AWS CloudWatch
• Service Mesh: Istio, AWS App Mesh
• Security: HashiCorp Vault, AWS Secrets Manager, Falco

Architecture Evolution

Phase 1: Lift & Shift (Completed)

• Migrated 200+ VMs to AWS EC2
• Implemented basic auto-scaling
• Set up centralized logging and monitoring

Phase 2: Container Transformation (Current)

• Containerizing 50+ applications
• Kubernetes cluster management
• Microservices decomposition
• GitOps implementation

Phase 3: Multi-Cloud Strategy (Planned)

• Cross-cloud disaster recovery
• Workload optimization across providers
• Unified monitoring and management

Core Infrastructure Components

1. Kubernetes Platform

• Setup: Multi-region EKS clusters, Node auto-scaling
• Networking: Calico CNI, Network policies, Ingress controllers
• Security: RBAC, Pod Security Standards, Network segmentation
• Monitoring: Prometheus operator, Grafana dashboards

2. CI/CD Pipeline

• Source Control: GitLab with branch protection
• Build: Docker multi-stage builds, Security scanning
• Deploy: ArgoCD for GitOps, Blue-green deployments
• Testing: Automated testing pipelines, Performance tests

3. Observability Stack

• Metrics: Prometheus, Custom metrics, SLI/SLO monitoring
• Logging: ELK Stack, Centralized log aggregation
• Tracing: Jaeger, Distributed tracing
• Alerting: AlertManager, PagerDuty integration

4. Security & Compliance

• Secrets Management: HashiCorp Vault, AWS Secrets Manager
• Network Security: VPC design, Security groups, NACLs
• Compliance: SOC 2, ISO 27001, Automated compliance checks
• Vulnerability Management: Container scanning, Dependency checks

Skills Required by Role

Cloud Platform Engineer

• Essential: AWS/Azure/GCP, Terraform, Kubernetes, Linux
• Intermediate: Networking, Security, Monitoring, CI/CD
• Advanced: Multi-cloud architecture, Cost optimization, Automation

DevOps Engineer

• Essential: Docker, Kubernetes, CI/CD, Git, Scripting (Python/Bash)
• Intermediate: Infrastructure as Code, Monitoring, Security
• Advanced: Platform engineering, SRE practices, Incident response

Site Reliability Engineer (SRE)

• Essential: Linux, Monitoring, Incident response, Automation
• Intermediate: Kubernetes, Cloud platforms, Performance tuning
• Advanced: Reliability engineering, Chaos engineering, SLI/SLO design

Security Engineer (Cloud)

• Essential: Cloud security, Network security, Identity management
• Intermediate: Kubernetes security, Compliance frameworks
• Advanced: Threat modeling, Security automation, Zero-trust architecture

Learning Paths for Cloud Roles

Cloud Platform Engineer Track - 12 weeks

1. Week 1-2: AWS fundamentals, Core services, IAM
2. Week 3-4: Terraform basics, Infrastructure as Code patterns
3. Week 5-6: Kubernetes fundamentals, Container orchestration
4. Week 7-8: Advanced Kubernetes, Helm, Operators
5. Week 9-10: Monitoring and observability, SRE practices
6. Week 11-12: Multi-cloud strategies, Cost optimization

DevOps Engineer Advancement - 10 weeks

1. Week 1-2: Advanced Docker, Container best practices
2. Week 3-4: Kubernetes deep dive, Custom resources
3. Week 5-6: GitOps with ArgoCD, Advanced CI/CD patterns
4. Week 7-8: Infrastructure automation, Configuration management
5. Week 9-10: Security integration, Compliance automation

SRE Specialization - 8 weeks

1. Week 1-2: SRE principles, SLI/SLO design, Error budgets
2. Week 3-4: Monitoring and alerting, Incident response
3. Week 5-6: Performance engineering, Capacity planning
4. Week 7-8: Chaos engineering, Reliability patterns

Current Infrastructure Challenges

• Multi-cloud Complexity: Managing workloads across providers
• Cost Optimization: Right-sizing resources, Reserved instances
• Security: Zero-trust implementation, Compliance automation
• Scalability: Auto-scaling strategies, Performance optimization
• Disaster Recovery: Cross-region failover, Data consistency

Best Practices Implemented

• Infrastructure as Code: 100% infrastructure managed via code
• GitOps: Declarative configuration management
• Immutable Infrastructure: Container-based deployments
• Observability: Comprehensive monitoring and alerting
• Security: Shift-left security, Automated compliance

Open Positions

• Senior Cloud Platform Engineer (AWS/Kubernetes)
• DevOps Engineer (Terraform/GitOps)
• Site Reliability Engineer (SRE)
• Cloud Security Engineer
• Platform Engineering Lead