Update tech_docs/cloud/aws_lab.md
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Absolutely! You can build a **highly functional, mostly local lab** that integrates AWS *only* for specific services (like IAM, Route 53, or GuardDuty) while keeping compute/storage/networking on-prem. Here’s how to architect it:
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---
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### **🔧 Lab Design: "AWS-Hybrid Minimalist"**
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**Goal**: 99% of workloads run locally, but leverage AWS for:
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- **Identity** (AWS IAM for authentication)
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- **DNS** (Route 53 private zones)
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- **Security** (GuardDuty for threat detection)
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- **Cost Zero** (Free-tier services only).
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#### **Architecture**
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```mermaid
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graph TB
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subgraph Local[On-Prem Lab]
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Proxmox-->VM1[VyOS Router]
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Proxmox-->VM2[K8s Cluster]
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Proxmox-->VM3[CI/CD Server]
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end
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subgraph AWS[Cloud Services]
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IAM-->|STS|Local
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Route53-->|Private DNS|Local
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GuardDuty-->|Threat Intel|Local
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end
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```
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---
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### **🚀 Step 1: Local Core Infrastructure**
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#### **1. Hypervisor (Proxmox/KVM)**
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- **Role**: Host VMs for networking, K8s, and workloads.
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- **Networking**:
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```bash
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# Create a bridge for VMs (vmbr0)
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sudo ip link add name vmbr0 type bridge
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sudo ip link set vmbr0 up
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```
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#### **2. Networking (VyOS/FRRouting)**
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- **Role**: Simulate AWS TGW/VPC routing.
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- **Config**:
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```bash
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# BGP with AWS (over VPN)
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set protocols bgp 65001 neighbor 169.254.100.1 remote-as 64512
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set protocols bgp 65001 network 192.168.1.0/24
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```
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#### **3. Kubernetes (k3s/EKS Anywhere)**
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- **Role**: Run containerized apps locally.
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- **Integration**:
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```bash
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# Use AWS ECR for images (but run locally)
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aws ecr get-login-password | docker login --username AWS --password-stdin 123456789012.dkr.ecr.us-east-1.amazonaws.com
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```
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---
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### **🔗 Step 2: Strategic AWS Integrations**
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#### **1. IAM for Authentication**
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- **Local Services Auth via AWS IAM**:
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```bash
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# Use AWS CLI to generate temp credentials for local apps
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aws sts assume-role --role-arn arn:aws:iam::123456789012:role/LabAdmin --role-session-name lab-cli
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```
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#### **2. Route 53 Private DNS**
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- **Hybrid DNS Resolution**:
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```bash
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# On VyOS/Ubuntu DNS server
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cat <<EOF > /etc/resolv.conf
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search us-east-1.compute.internal
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nameserver 10.0.0.2 # AWS DNS
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nameserver 192.168.1.1 # Local DNS
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EOF
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```
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#### **3. GuardDuty for Threat Detection**
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- **Forward Local Logs to AWS**:
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```bash
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# Install AWS agent to send syslogs to GuardDuty
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sudo amazon-cloudwatch-agent-ctl -a fetch-config -m onPremise -s -c ssm:AmazonCloudWatch-linux.json
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```
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---
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### **💡 Step 3: Cost-Free AWS Services**
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| Service | Free Tier Usage | Local Integration Command |
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|------------------|------------------------------------------|------------------------------------------|
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| **IAM** | 1000+ free API calls/month | `aws iam list-users` |
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| **Route 53** | 1 private hosted zone | `aws route53 list-hosted-zones-private` |
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| **GuardDuty** | 30-day free trial | `aws guardduty list-detectors` |
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| **CloudTrail** | 1 free trail | `aws cloudtrail lookup-events` |
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---
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### **🔬 Sample Lab Exercises**
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#### **1. Authenticate Local K8s to AWS ECR**
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```bash
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# On local K8s node
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aws eks get-token --cluster-name my-local-cluster | kubectl config set-credentials aws-user --token
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```
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#### **2. Hybrid DNS Debugging**
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```bash
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# Query AWS Route 53 from local VM
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dig +short myapp.internal.aws # Should resolve to local IP
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```
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#### **3. GuardDuty Alert Simulation**
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```bash
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# Trigger a fake threat locally
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sudo nmap -sS 192.168.1.1 # GuardDuty detects port scans
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```
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---
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### **⚡ Why This Works**
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- **Zero Compute Costs**: All heavy lifting is local.
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- **Real AWS Integration**: IAM, DNS, and logging work like production.
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- **Portable**: Replace Proxmox with Raspberry Pis for edge testing.
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**Pro Tip**: Use Terraform to define AWS resources, then `terraform destroy` daily to avoid costs.
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Want the **exact Terraform configs** to auto-setup this lab? Here’s a snippet:
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```hcl
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# AWS Route 53 private zone
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resource "aws_route53_zone" "local_lab" {
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name = "internal.aws"
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vpc {
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vpc_id = "vpc-123" # Dummy VPC (not used locally)
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}
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}
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```
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---
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### **Final Thought**
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This setup gives you **production-grade AWS patterns** (IAM roles, centralized DNS) without paying for EC2/VPCs. You’re only charged for API calls (which stay free-tier compliant).
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**Need a full terraform config or Proxmox setup script?** I can package it all into a GitHub repo!
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---
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### **The Ultimate Linux Networking & CLI Fluency Guide for AWS Professionals**
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*(A tactical, no-fluff manual for mastering the fundamentals that power AWS under the hood)*
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