🚀 DevOps EC2 Deployment | Terraform + AWS

From manual EC2 to S3 Remote State - step by step production IaC

• Launched EC2 via AWS Console
• Deployed Flask app on port 5000 with user_data
• Understood EC2, Security Groups, SSH basics

• Installed Nginx on EC2
• Configured reverse proxy: 80 → 5000
• App now accessible on http://<EC2_IP> without port
• Learned production routing pattern

• Converted manual infra to Terraform
• Created main.tf, variables.tf, outputs.tf
• Fixed SG already exists error - learned importance of terraform.tfstate
• First successful terraform apply / destroy cycle

• Created S3 bucket devops-tfstate-anuj-2026 (encrypted + versioned)

• Added backend block with native locking

  backend "s3" {
    bucket = "devops-tfstate-anuj-2026"
    key    = "devops-app/terraform.tfstate"
    region = "eu-north-1"
    use_lockfile = true
  }

• Migrated: terraform init -migrate-state -upgrade

• Deleted local tfstate - terraform state list still works from S3

  ⚡️ Quick Deploy

git clone https://github.com/<username>/devops-ec2-deploy.git
cd devops-ec2-deploy/terraform
terraform init
terraform apply

App: http://<EC2_IP> (via Nginx) | Direct: :5000 Health: /health | Info: /api/info

terraform destroy

• EC2: t3.micro, Ubuntu 22.04, eu-north-1
• Proxy: Nginx 80 → Flask 5000
• SG: 22, 80, 5000
• State: S3 Remote + Native Locking
• App: Production Dashboard

Branch: level-4-remote-state | Release: level-4-complete
Built by: Anuj Yadav