devops-cloud

DevOps & Cloud Infrastructure

Comprehensive guide for cloud platforms, infrastructure as code, and DevOps practices.

Cloud Platforms

AWS (Amazon Web Services)

Compute:

# EC2 Instance Types
General Purpose: t3, m6i, m7g (ARM)
Compute Optimized: c6i, c7g
Memory Optimized: r6i, x2idn
Storage Optimized: i3, d3

# Auto Scaling
aws autoscaling create-auto-scaling-group \
  --auto-scaling-group-name my-asg \
  --launch-template LaunchTemplateId=lt-xxx \
  --min-size 1 --max-size 10 --desired-capacity 2 \
  --vpc-zone-identifier "subnet-xxx,subnet-yyy"

Serverless:

// Lambda with TypeScript
import { APIGatewayProxyHandler } from "aws-lambda";

export const handler: APIGatewayProxyHandler = async (event) => {
  return {
    statusCode: 200,
    body: JSON.stringify({ message: "Success" }),
  };
};

Storage:

Service	Use Case	Durability
S3	Object storage	99.999999999%
EBS	Block storage (EC2)	99.999%
EFS	Shared file system	99.999999999%
FSx	Windows/Lustre	99.999999999%

GCP (Google Cloud Platform)

Key Services:

# GKE cluster
gcloud container clusters create my-cluster \
  --zone us-central1-a \
  --num-nodes 3 \
  --machine-type e2-medium \
  --enable-autoscaling --min-nodes 1 --max-nodes 10

# Cloud Run (serverless containers)
gcloud run deploy my-service \
  --image gcr.io/project/image:tag \
  --platform managed \
  --region us-central1 \
  --allow-unauthenticated

Azure

Key Services:

# AKS cluster
az aks create \
  --resource-group myRG \
  --name myAKS \
  --node-count 3 \
  --enable-addons monitoring \
  --generate-ssh-keys

# Azure Functions
func init MyFunctionApp --typescript
func new --name HttpTrigger --template "HTTP trigger"

---

Kubernetes

Core Concepts

# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
  labels:
    app: my-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
        - name: my-app
          image: my-app:1.0.0
          ports:
            - containerPort: 8080
          resources:
            requests:
              memory: "128Mi"
              cpu: "250m"
            limits:
              memory: "256Mi"
              cpu: "500m"
          livenessProbe:
            httpGet:
              path: /health
              port: 8080
            initialDelaySeconds: 30
            periodSeconds: 10
          readinessProbe:
            httpGet:
              path: /ready
              port: 8080
            initialDelaySeconds: 5
            periodSeconds: 5