Designing, deploying and troubleshooting secure cloud infrastructure using AWS, Linux, Docker, networking and DevOps practices.
About • Engineering DNA • Cloud Stack • Projects • Incident Lab • Credentials • Roadmap • GitHub • Connect
name: Nithishkumar K
role: Aspiring Cloud / AWS Engineer
education: Final-Year B.Tech Information Technology
college: Mahendra Engineering College
location: Tamil Nadu, India
primary_focus:
- AWS Cloud Infrastructure
- Linux Administration
- Containerized Deployments
- Networking
- Infrastructure as Code
- Cloud Security
- DevOps Automation
current_goal:
- Become industry-ready for Cloud / AWS / DevOps roles
- Build production-oriented cloud projects
- Develop strong troubleshooting and incident-response skills- ☁️ Building and documenting AWS cloud infrastructure
- 🐧 Working with Linux, Nginx and system-level troubleshooting
- 🐳 Practising Docker and containerized application deployment
- 🌐 Learning networking through real cloud architectures
- 🧱 Exploring Infrastructure as Code and automation
- 🔐 Interested in secure, reliable and least-privilege cloud systems
- 🧪 Learning by building systems, breaking them and troubleshooting failures
I don't want to learn cloud by memorizing service definitions.
I learn by building systems and understanding what happens when they fail.
┌──────────────┐
│ LEARN │
└──────┬───────┘
↓
┌──────────────┐
│ BUILD │
└──────┬───────┘
↓
┌──────────────┐
│ BREAK │
└──────┬───────┘
↓
┌──────────────┐
│ TROUBLESHOOT │
└──────┬───────┘
↓
┌──────────────┐
│ FIX │
└──────┬───────┘
↓
┌──────────────┐
│ DOCUMENT │
└──────┬───────┘
↓
┌──────────────┐
│ IMPROVE │
└──────────────┘
Design for failure. Automate repeatable work. Secure every layer. Monitor what you deploy. Document what you learn.
| Area | Current Level | Focus |
|---|---|---|
| AWS | 🟢 Hands-on | Infrastructure & Architecture |
| Linux | 🟢 Hands-on | Administration & Troubleshooting |
| Docker | 🟢 Hands-on | Containerization |
| Git / GitHub | 🟢 Hands-on | Version Control |
| Nginx | 🟢 Hands-on | Web Deployment |
| Networking | 🟡 Building | Cloud Networking |
| Python | 🟡 Building | Automation |
| Cloud Security | 🟡 Building | IAM & Secure Architecture |
| Terraform | 🔵 Next | Infrastructure as Code |
| CI/CD | 🔵 Next | Automated Deployment |
| Kubernetes | 🔵 Roadmap | Container Orchestration |
| GCP | 🔵 Foundations | Multi-cloud Exposure |
Status: 🚧 In Progress
A production-inspired highly available web architecture designed around security, scalability and fault isolation.
INTERNET
│
▼
Route 53
│
▼
Application Load Balancer
│
┌──────────┴──────────┐
▼ ▼
EC2 / ASG EC2 / ASG
AZ - A AZ - B
│ │
└──────────┬──────────┘
▼
Amazon RDS
Private Tier
- Multi-AZ architecture
- Public and private subnet separation
- Application Load Balancer
- EC2 Auto Scaling
- Private database tier
- Security Group isolation
- IAM access control
- CloudWatch monitoring
- Production-oriented documentation
Stack: AWS VPC · EC2 · ALB · Auto Scaling · RDS · IAM · CloudWatch
Status: ✅ Completed
Infrastructure as Code project for repeatable AWS resource provisioning.
- Custom VPC
- Public subnet
- Routing configuration
- Internet connectivity
- IAM role
- EC2 provisioning
- Automated Nginx installation
- Deployment verification
Stack: AWS · CloudFormation · YAML · EC2 · VPC · IAM
Status: ✅ Completed
Containerized web deployment using Docker and Nginx.
- Docker image creation
- Container lifecycle management
- Port mapping
- Nginx configuration
- Health verification
- HTTP testing
- Deployment documentation
Stack: Docker · Nginx · Linux · HTML
Status: ✅ Completed
Hands-on AWS deployment focused on Linux server administration and web hosting.
- EC2 provisioning
- Security Group configuration
- Linux administration
- Nginx installation
- Web server configuration
- HTTP validation
- Remote server management
| Project | Focus | Status |
|---|---|---|
| AWS S3 Static Website Hosting | S3 hosting & bucket configuration | ✅ Completed |
| Java Cloud Server Health Checker | Java, Servlet, JSP, Tomcat & MySQL | ✅ Completed |
| Secure RAG FastAPI Backend | FastAPI & document retrieval | 🚧 In Progress |
| Cloud Portfolio | Cloud-focused personal portfolio | 🚧 In Progress |
Because infrastructure knowledge matters most when something breaks.
I use failures as learning exercises instead of treating them as mistakes to hide.
INCIDENT
│
▼
OBSERVE SYMPTOMS
│
▼
CHECK METRICS / LOGS
│
▼
FORM HYPOTHESIS
│
▼
TEST THE CAUSE
│
▼
APPLY THE FIX
│
▼
VERIFY RECOVERY
│
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DOCUMENT ROOT CAUSE
│
▼
PREVENT RECURRENCE
| Incident | Investigation Area | Expected Learning |
|---|---|---|
| EC2 website unreachable | SG / Nginx / Port / Service | Network troubleshooting |
| Application cannot reach DB | SG / Subnet / Routing | Tier isolation |
| Docker container unavailable | Container / Port / Process | Container debugging |
| IAM action denied | Policy / Resource / Identity | Permission troubleshooting |
| High server utilization | CPU / Memory / Process | Linux monitoring |
| Application returns 502 | ALB / Target / Nginx | Load-balancer debugging |
- 🔐 Prefer least-privilege IAM over broad permissions
- 🌐 Separate public-facing and private workloads
- 🏗️ Design for availability where required
- 📊 Monitor deployed systems
- 🧱 Prefer repeatable infrastructure definitions
- 📝 Document deployment and troubleshooting evidence
- 🔄 Improve systems after every failure
📜 View Credentials
| Credential | Issuer | Evidence |
|---|---|---|
| AWS Cloud Quest: Cloud Practitioner | AWS | Verify |
| AWS SimuLearn: Cloud Practitioner | AWS | Verify |
| AWS Educate Introduction to Cloud 101 | AWS | Verify |
| AWS Educate Getting Started with Security | AWS | Verify |
| Oracle Database for Developers: Foundation | Oracle | Completed |
| Human Computer Interaction — Elite + Gold | NPTEL | Completed |
CURRENT
│
▼
☁️ AWS CLOUD PROJECTS
│
▼
🐳 DOCKER MASTER
│
▼
🔧 GIT + CI/CD
│
▼
🌐 NETWORKING
│
▼
☸️ KUBERNETES MASTER
│
▼
EKS
│
▼
INGRESS / GATEWAY
│
▼
GITOPS / ARGOCD
│
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📊 OBSERVABILITY STACK
Prometheus / Grafana / Loki
│
▼
⚡ SCALING / KARPENTER
│
▼
🔐 SECURITY
│
▼
🧱 TERRAFORM / ANSIBLE
│
▼
SRE / PRODUCTION
│
▼
🚀 INTEGRATED PROJECT
│
▼
🎯 INTERVIEW READY
- Complete and document AWS 3-Tier architecture
- Master Docker fundamentals through production workflows
- Build CI/CD deployment pipelines
- Strengthen networking and Linux troubleshooting
- Learn Kubernetes after Docker + CI/CD foundations
- Build production-style Cloud/DevOps projects
- Prepare for Cloud/AWS internship and entry-level roles
