infrastructure with aws cdk

infrastructure/cdk/bin/app.ts

@@ -4,11 +4,20 @@ import * as cdk from "aws-cdk-lib";
 import { ConditionCheckLambdaStack } from "../lib/condition-check-lambda-stack";
 import { ImageProcessorLambdaStack } from "../lib/image-processor-lambda-stack";
 import { VpcStack } from "../lib/vpc-stack";
+import { CertificateStack } from "../lib/certificate-stack";
+import { SecretsStack } from "../lib/secrets-stack";
+import { EcrStack } from "../lib/ecr-stack";
+import { RdsStack } from "../lib/rds-stack";
+import { EcsServiceStack } from "../lib/ecs-service-stack";
 
 const app = new cdk.App();
 
-// Get environment from context or default to staging
+// Get environment from context or default to dev
-const environment = app.node.tryGetContext("env") || "staging";
+const environment = app.node.tryGetContext("env") || "dev";
+
+// Get context variables for deployment configuration
+const allowedIp = app.node.tryGetContext("allowedIp"); // e.g., "1.2.3.4/32"
+const domainName = app.node.tryGetContext("domainName") || "village-share.com";
 
 // Environment-specific configurations
 const envConfig: Record<
@@ -19,26 +28,46 @@ const envConfig: Record<
     sesFromEmail: string;
     emailEnabled: boolean;
     natGateways: number;
+    subdomain: string;
+    dbInstanceType: "micro" | "small" | "medium";
+    multiAz: boolean;
   }
 > = {
+  dev: {
+    databaseUrl:
+      process.env.DATABASE_URL ||
+      "postgresql://user:password@localhost:5432/rentall_dev",
+    frontendUrl: `https://dev.${domainName}`,
+    sesFromEmail: `noreply@${domainName}`,
+    emailEnabled: false, // Disable emails in dev
+    natGateways: 1,
+    subdomain: "dev",
+    dbInstanceType: "micro",
+    multiAz: false,
+  },
   staging: {
-    // These should be passed via CDK context or SSM parameters in production
     databaseUrl:
       process.env.DATABASE_URL ||
       "postgresql://user:password@localhost:5432/rentall_staging",
-    frontendUrl: "https://staging.villageshare.app",
+    frontendUrl: `https://staging.${domainName}`,
-    sesFromEmail: "noreply@villageshare.app",
+    sesFromEmail: `noreply@${domainName}`,
     emailEnabled: true,
-    natGateways: 1, // Single NAT gateway for cost optimization in staging
+    natGateways: 1,
+    subdomain: "staging",
+    dbInstanceType: "micro",
+    multiAz: false,
   },
   prod: {
     databaseUrl:
       process.env.DATABASE_URL ||
       "postgresql://user:password@localhost:5432/rentall_prod",
-    frontendUrl: "https://villageshare.app",
+    frontendUrl: `https://${domainName}`,
-    sesFromEmail: "noreply@villageshare.app",
+    sesFromEmail: `noreply@${domainName}`,
     emailEnabled: true,
-    natGateways: 2, // Multi-AZ NAT gateways for high availability in production
+    natGateways: 2, // Multi-AZ NAT gateways for high availability
+    subdomain: "", // No subdomain for prod
+    dbInstanceType: "small",
+    multiAz: true,
   },
 };
 
@@ -55,7 +84,30 @@ const envProps = {
   },
 };
 
-// Create the VPC stack first (other stacks depend on it)
+// Common tags for all stacks
+const commonTags = {
+  Environment: environment,
+  Project: "village-share",
+  ManagedBy: "cdk",
+};
+
+// ============================================================================
+// Certificate Stack (Shared across environments)
+// Deploy this once and validate DNS before deploying other stacks
+// ============================================================================
+const certificateStack = new CertificateStack(app, "CertificateStack", {
+  domainName,
+  ...envProps,
+  description: `ACM wildcard certificate for ${domainName}`,
+  tags: {
+    ...commonTags,
+    Service: "certificate",
+  },
+});
+
+// ============================================================================
+// VPC Stack
+// ============================================================================
 const vpcStack = new VpcStack(app, `VpcStack-${environment}`, {
   environment,
   natGateways: config.natGateways,
@@ -63,13 +115,102 @@ const vpcStack = new VpcStack(app, `VpcStack-${environment}`, {
   ...envProps,
   description: `VPC infrastructure with private subnets and VPC endpoints (${environment})`,
   tags: {
-    Environment: environment,
+    ...commonTags,
-    Project: "village-share",
     Service: "networking",
   },
 });
 
-// Create the Condition Check Lambda stack
+// ============================================================================
+// Secrets Stack
+// ============================================================================
+const secretsStack = new SecretsStack(app, `SecretsStack-${environment}`, {
+  environment,
+  ...envProps,
+  description: `Secrets Manager secrets for database and application (${environment})`,
+  tags: {
+    ...commonTags,
+    Service: "secrets",
+  },
+});
+
+// ============================================================================
+// ECR Stack
+// ============================================================================
+const ecrStack = new EcrStack(app, `EcrStack-${environment}`, {
+  environment,
+  ...envProps,
+  description: `ECR repositories for Docker images (${environment})`,
+  tags: {
+    ...commonTags,
+    Service: "ecr",
+  },
+});
+
+// ============================================================================
+// RDS Stack
+// ============================================================================
+const rdsStack = new RdsStack(app, `RdsStack-${environment}`, {
+  environment,
+  vpc: vpcStack.vpc,
+  databaseSecret: secretsStack.databaseSecret,
+  databaseName: "rentall",
+  multiAz: config.multiAz,
+  ...envProps,
+  description: `RDS PostgreSQL database (${environment})`,
+  tags: {
+    ...commonTags,
+    Service: "database",
+  },
+});
+
+// RDS depends on VPC and Secrets
+rdsStack.addDependency(vpcStack);
+rdsStack.addDependency(secretsStack);
+
+// ============================================================================
+// ECS Service Stack
+// ============================================================================
+const fullDomainName = config.subdomain
+  ? `${config.subdomain}.${domainName}`
+  : domainName;
+
+const ecsServiceStack = new EcsServiceStack(
+  app,
+  `EcsServiceStack-${environment}`,
+  {
+    environment,
+    vpc: vpcStack.vpc,
+    certificate: certificateStack.certificate,
+    backendRepository: ecrStack.backendRepository,
+    frontendRepository: ecrStack.frontendRepository,
+    databaseSecret: secretsStack.databaseSecret,
+    appSecret: secretsStack.appSecret,
+    databaseSecurityGroup: rdsStack.databaseSecurityGroup,
+    dbEndpoint: rdsStack.dbEndpoint,
+    dbPort: rdsStack.dbPort,
+    dbName: "rentall",
+    domainName: fullDomainName,
+    allowedIp: environment === "dev" ? allowedIp : undefined, // Only restrict in dev
+    frontendUrl: config.frontendUrl,
+    ...envProps,
+    description: `ECS Fargate services with ALB (${environment})`,
+    tags: {
+      ...commonTags,
+      Service: "ecs",
+    },
+  }
+);
+
+// ECS depends on VPC, Certificate, ECR, Secrets, and RDS
+ecsServiceStack.addDependency(vpcStack);
+ecsServiceStack.addDependency(certificateStack);
+ecsServiceStack.addDependency(ecrStack);
+ecsServiceStack.addDependency(secretsStack);
+ecsServiceStack.addDependency(rdsStack);
+
+// ============================================================================
+// Lambda Stacks (existing)
+// ============================================================================
 const conditionCheckStack = new ConditionCheckLambdaStack(
   app,
   `ConditionCheckLambdaStack-${environment}`,
@@ -84,17 +225,14 @@ const conditionCheckStack = new ConditionCheckLambdaStack(
     ...envProps,
     description: `Condition Check Reminder Lambda infrastructure (${environment})`,
     tags: {
-      Environment: environment,
+      ...commonTags,
-      Project: "village-share",
       Service: "condition-check-reminder",
     },
   }
 );
 
-// Add dependency on VPC stack
 conditionCheckStack.addDependency(vpcStack);
 
-// Create the Image Processor Lambda stack
 const imageProcessorStack = new ImageProcessorLambdaStack(
   app,
   `ImageProcessorLambdaStack-${environment}`,
@@ -107,12 +245,10 @@ const imageProcessorStack = new ImageProcessorLambdaStack(
     ...envProps,
     description: `Image Processor Lambda infrastructure (${environment})`,
     tags: {
-      Environment: environment,
+      ...commonTags,
-      Project: "village-share",
       Service: "image-processor",
     },
   }
 );
 
-// Add dependency on VPC stack
 imageProcessorStack.addDependency(vpcStack);

infrastructure/cdk/lib/certificate-stack.ts

@@ -0,0 +1,59 @@
+import * as cdk from "aws-cdk-lib";
+import * as acm from "aws-cdk-lib/aws-certificatemanager";
+import { Construct } from "constructs";
+
+interface CertificateStackProps extends cdk.StackProps {
+  /**
+   * The domain name for the certificate (e.g., village-share.com)
+   */
+  domainName: string;
+}
+
+export class CertificateStack extends cdk.Stack {
+  /**
+   * The ACM certificate for the domain
+   */
+  public readonly certificate: acm.Certificate;
+
+  /**
+   * The certificate ARN for cross-stack references
+   */
+  public readonly certificateArn: string;
+
+  constructor(scope: Construct, id: string, props: CertificateStackProps) {
+    super(scope, id, props);
+
+    const { domainName } = props;
+
+    // Create wildcard certificate for the domain
+    // This covers both the apex domain and all subdomains
+    this.certificate = new acm.Certificate(this, "WildcardCertificate", {
+      domainName: domainName,
+      subjectAlternativeNames: [`*.${domainName}`],
+      validation: acm.CertificateValidation.fromDns(),
+      certificateName: `${domainName}-wildcard`,
+    });
+
+    this.certificateArn = this.certificate.certificateArn;
+
+    // Outputs
+    new cdk.CfnOutput(this, "CertificateArn", {
+      value: this.certificate.certificateArn,
+      description: "ACM Certificate ARN",
+      exportName: `CertificateArn-${domainName.replace(/\./g, "-")}`,
+    });
+
+    new cdk.CfnOutput(this, "DomainName", {
+      value: domainName,
+      description: "Domain name for the certificate",
+    });
+
+    // Important: After deployment, you need to add CNAME records to your DNS provider
+    // Run: aws acm describe-certificate --certificate-arn <ARN> --query 'Certificate.DomainValidationOptions'
+    // to get the CNAME records needed for DNS validation
+    new cdk.CfnOutput(this, "ValidationInstructions", {
+      value: `Run 'aws acm describe-certificate --certificate-arn ${this.certificate.certificateArn} --query Certificate.DomainValidationOptions' to get DNS validation records`,
+      description: "Instructions for DNS validation",
+    });
+  }
+}

infrastructure/cdk/lib/ecr-stack.ts

@@ -0,0 +1,90 @@
+import * as cdk from "aws-cdk-lib";
+import * as ecr from "aws-cdk-lib/aws-ecr";
+import { Construct } from "constructs";
+
+interface EcrStackProps extends cdk.StackProps {
+  /**
+   * Environment name (dev, staging, prod)
+   */
+  environment: string;
+
+  /**
+   * Number of images to retain (default: 10)
+   */
+  maxImageCount?: number;
+}
+
+export class EcrStack extends cdk.Stack {
+  /**
+   * Backend Docker image repository
+   */
+  public readonly backendRepository: ecr.Repository;
+
+  /**
+   * Frontend Docker image repository
+   */
+  public readonly frontendRepository: ecr.Repository;
+
+  constructor(scope: Construct, id: string, props: EcrStackProps) {
+    super(scope, id, props);
+
+    const { environment, maxImageCount = 10 } = props;
+
+    // Backend repository
+    this.backendRepository = new ecr.Repository(this, "BackendRepository", {
+      repositoryName: `rentall-backend-${environment}`,
+      removalPolicy: cdk.RemovalPolicy.RETAIN,
+      imageScanOnPush: true,
+      imageTagMutability: ecr.TagMutability.MUTABLE,
+      lifecycleRules: [
+        {
+          rulePriority: 1,
+          description: `Keep only the last ${maxImageCount} images`,
+          maxImageCount: maxImageCount,
+          tagStatus: ecr.TagStatus.ANY,
+        },
+      ],
+    });
+
+    // Frontend repository
+    this.frontendRepository = new ecr.Repository(this, "FrontendRepository", {
+      repositoryName: `rentall-frontend-${environment}`,
+      removalPolicy: cdk.RemovalPolicy.RETAIN,
+      imageScanOnPush: true,
+      imageTagMutability: ecr.TagMutability.MUTABLE,
+      lifecycleRules: [
+        {
+          rulePriority: 1,
+          description: `Keep only the last ${maxImageCount} images`,
+          maxImageCount: maxImageCount,
+          tagStatus: ecr.TagStatus.ANY,
+        },
+      ],
+    });
+
+    // Outputs
+    new cdk.CfnOutput(this, "BackendRepositoryUri", {
+      value: this.backendRepository.repositoryUri,
+      description: "Backend ECR repository URI",
+      exportName: `BackendRepositoryUri-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "BackendRepositoryName", {
+      value: this.backendRepository.repositoryName,
+      description: "Backend ECR repository name",
+      exportName: `BackendRepositoryName-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "FrontendRepositoryUri", {
+      value: this.frontendRepository.repositoryUri,
+      description: "Frontend ECR repository URI",
+      exportName: `FrontendRepositoryUri-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "FrontendRepositoryName", {
+      value: this.frontendRepository.repositoryName,
+      description: "Frontend ECR repository name",
+      exportName: `FrontendRepositoryName-${environment}`,
+    });
+  }
+}

infrastructure/cdk/lib/ecs-service-stack.ts

@@ -0,0 +1,483 @@
+import * as cdk from "aws-cdk-lib";
+import * as ec2 from "aws-cdk-lib/aws-ec2";
+import * as ecs from "aws-cdk-lib/aws-ecs";
+import * as ecr from "aws-cdk-lib/aws-ecr";
+import * as elbv2 from "aws-cdk-lib/aws-elasticloadbalancingv2";
+import * as logs from "aws-cdk-lib/aws-logs";
+import * as secretsmanager from "aws-cdk-lib/aws-secretsmanager";
+import * as acm from "aws-cdk-lib/aws-certificatemanager";
+import * as iam from "aws-cdk-lib/aws-iam";
+import { Construct } from "constructs";
+
+interface EcsServiceStackProps extends cdk.StackProps {
+  /**
+   * Environment name (dev, staging, prod)
+   */
+  environment: string;
+
+  /**
+   * VPC to deploy services in
+   */
+  vpc: ec2.IVpc;
+
+  /**
+   * ACM certificate for HTTPS
+   */
+  certificate: acm.ICertificate;
+
+  /**
+   * Backend ECR repository
+   */
+  backendRepository: ecr.IRepository;
+
+  /**
+   * Frontend ECR repository
+   */
+  frontendRepository: ecr.IRepository;
+
+  /**
+   * Database credentials secret
+   */
+  databaseSecret: secretsmanager.ISecret;
+
+  /**
+   * Application secrets (JWT, etc.)
+   */
+  appSecret: secretsmanager.ISecret;
+
+  /**
+   * Database security group (to allow ECS -> RDS access)
+   */
+  databaseSecurityGroup: ec2.ISecurityGroup;
+
+  /**
+   * Database endpoint
+   */
+  dbEndpoint: string;
+
+  /**
+   * Database port
+   */
+  dbPort: number;
+
+  /**
+   * Database name
+   */
+  dbName: string;
+
+  /**
+   * Domain name for the environment (e.g., dev.village-share.com)
+   */
+  domainName: string;
+
+  /**
+   * IP address to restrict ALB access to (CIDR format, e.g., "1.2.3.4/32")
+   * If not provided, ALB is open to the internet
+   */
+  allowedIp?: string;
+
+  /**
+   * Frontend URL for CORS configuration
+   */
+  frontendUrl: string;
+}
+
+export class EcsServiceStack extends cdk.Stack {
+  /**
+   * The ECS cluster
+   */
+  public readonly cluster: ecs.Cluster;
+
+  /**
+   * The Application Load Balancer
+   */
+  public readonly alb: elbv2.ApplicationLoadBalancer;
+
+  /**
+   * Backend ECS service
+   */
+  public readonly backendService: ecs.FargateService;
+
+  /**
+   * Frontend ECS service
+   */
+  public readonly frontendService: ecs.FargateService;
+
+  constructor(scope: Construct, id: string, props: EcsServiceStackProps) {
+    super(scope, id, props);
+
+    const {
+      environment,
+      vpc,
+      certificate,
+      backendRepository,
+      frontendRepository,
+      databaseSecret,
+      appSecret,
+      databaseSecurityGroup,
+      dbEndpoint,
+      dbPort,
+      dbName,
+      domainName,
+      allowedIp,
+      frontendUrl,
+    } = props;
+
+    // ECS Cluster with Container Insights
+    this.cluster = new ecs.Cluster(this, "Cluster", {
+      clusterName: `rentall-cluster-${environment}`,
+      vpc,
+      containerInsights: true,
+    });
+
+    // ALB Security Group
+    const albSecurityGroup = new ec2.SecurityGroup(this, "AlbSecurityGroup", {
+      vpc,
+      securityGroupName: `rentall-alb-sg-${environment}`,
+      description: `ALB security group for rentall ${environment}`,
+      allowAllOutbound: true,
+    });
+
+    // Configure ALB access based on allowedIp
+    if (allowedIp) {
+      // Restrict to specific IP (dev environment)
+      albSecurityGroup.addIngressRule(
+        ec2.Peer.ipv4(allowedIp),
+        ec2.Port.tcp(443),
+        `Allow HTTPS from ${allowedIp}`
+      );
+      albSecurityGroup.addIngressRule(
+        ec2.Peer.ipv4(allowedIp),
+        ec2.Port.tcp(80),
+        `Allow HTTP from ${allowedIp} (for redirect)`
+      );
+    } else {
+      // Open to the internet (staging/prod)
+      albSecurityGroup.addIngressRule(
+        ec2.Peer.anyIpv4(),
+        ec2.Port.tcp(443),
+        "Allow HTTPS from anywhere"
+      );
+      albSecurityGroup.addIngressRule(
+        ec2.Peer.anyIpv4(),
+        ec2.Port.tcp(80),
+        "Allow HTTP from anywhere (for redirect)"
+      );
+    }
+
+    // Application Load Balancer
+    this.alb = new elbv2.ApplicationLoadBalancer(this, "Alb", {
+      loadBalancerName: `rentall-alb-${environment}`,
+      vpc,
+      internetFacing: true,
+      securityGroup: albSecurityGroup,
+      vpcSubnets: { subnetType: ec2.SubnetType.PUBLIC },
+    });
+
+    // HTTPS Listener (port 443)
+    const httpsListener = this.alb.addListener("HttpsListener", {
+      port: 443,
+      protocol: elbv2.ApplicationProtocol.HTTPS,
+      certificates: [certificate],
+      sslPolicy: elbv2.SslPolicy.TLS12,
+    });
+
+    // HTTP Listener (port 80) - Redirect to HTTPS
+    this.alb.addListener("HttpListener", {
+      port: 80,
+      protocol: elbv2.ApplicationProtocol.HTTP,
+      defaultAction: elbv2.ListenerAction.redirect({
+        protocol: "HTTPS",
+        port: "443",
+        permanent: true,
+      }),
+    });
+
+    // Backend Security Group
+    const backendSecurityGroup = new ec2.SecurityGroup(
+      this,
+      "BackendSecurityGroup",
+      {
+        vpc,
+        securityGroupName: `rentall-backend-sg-${environment}`,
+        description: `Backend service security group (${environment})`,
+        allowAllOutbound: true,
+      }
+    );
+
+    // Allow ALB to reach backend
+    backendSecurityGroup.addIngressRule(
+      albSecurityGroup,
+      ec2.Port.tcp(5000),
+      "Allow traffic from ALB"
+    );
+
+    // Allow backend to reach database
+    databaseSecurityGroup.addIngressRule(
+      backendSecurityGroup,
+      ec2.Port.tcp(dbPort),
+      "Allow traffic from backend ECS"
+    );
+
+    // Frontend Security Group
+    const frontendSecurityGroup = new ec2.SecurityGroup(
+      this,
+      "FrontendSecurityGroup",
+      {
+        vpc,
+        securityGroupName: `rentall-frontend-sg-${environment}`,
+        description: `Frontend service security group (${environment})`,
+        allowAllOutbound: true,
+      }
+    );
+
+    // Allow ALB to reach frontend
+    frontendSecurityGroup.addIngressRule(
+      albSecurityGroup,
+      ec2.Port.tcp(80),
+      "Allow traffic from ALB"
+    );
+
+    // CloudWatch Log Groups
+    const backendLogGroup = new logs.LogGroup(this, "BackendLogGroup", {
+      logGroupName: `/ecs/rentall-backend-${environment}`,
+      retention: logs.RetentionDays.ONE_MONTH,
+      removalPolicy: cdk.RemovalPolicy.DESTROY,
+    });
+
+    const frontendLogGroup = new logs.LogGroup(this, "FrontendLogGroup", {
+      logGroupName: `/ecs/rentall-frontend-${environment}`,
+      retention: logs.RetentionDays.ONE_MONTH,
+      removalPolicy: cdk.RemovalPolicy.DESTROY,
+    });
+
+    // Backend Task Definition
+    const backendTaskDef = new ecs.FargateTaskDefinition(
+      this,
+      "BackendTaskDef",
+      {
+        family: `rentall-backend-${environment}`,
+        cpu: 512, // 0.5 vCPU
+        memoryLimitMiB: 1024, // 1 GB
+      }
+    );
+
+    // Grant secrets access to backend task
+    databaseSecret.grantRead(backendTaskDef.taskRole);
+    appSecret.grantRead(backendTaskDef.taskRole);
+
+    // Backend container
+    const backendContainer = backendTaskDef.addContainer("backend", {
+      containerName: "backend",
+      image: ecs.ContainerImage.fromEcrRepository(backendRepository, "latest"),
+      logging: ecs.LogDriver.awsLogs({
+        logGroup: backendLogGroup,
+        streamPrefix: "backend",
+      }),
+      environment: {
+        NODE_ENV: environment === "prod" ? "production" : "development",
+        PORT: "5000",
+        DB_HOST: dbEndpoint,
+        DB_PORT: dbPort.toString(),
+        DB_NAME: dbName,
+        FRONTEND_URL: frontendUrl,
+        CORS_ORIGIN: frontendUrl,
+      },
+      secrets: {
+        DB_USER: ecs.Secret.fromSecretsManager(databaseSecret, "username"),
+        DB_PASSWORD: ecs.Secret.fromSecretsManager(databaseSecret, "password"),
+        JWT_SECRET: ecs.Secret.fromSecretsManager(appSecret, "jwtSecret"),
+      },
+      portMappings: [
+        {
+          containerPort: 5000,
+          protocol: ecs.Protocol.TCP,
+        },
+      ],
+      healthCheck: {
+        command: [
+          "CMD-SHELL",
+          "curl -f http://localhost:5000/api/health || exit 1",
+        ],
+        interval: cdk.Duration.seconds(30),
+        timeout: cdk.Duration.seconds(5),
+        retries: 3,
+        startPeriod: cdk.Duration.seconds(60),
+      },
+    });
+
+    // Backend Service
+    this.backendService = new ecs.FargateService(this, "BackendService", {
+      serviceName: `backend-${environment}`,
+      cluster: this.cluster,
+      taskDefinition: backendTaskDef,
+      desiredCount: 1,
+      securityGroups: [backendSecurityGroup],
+      vpcSubnets: { subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS },
+      enableExecuteCommand: true, // Enable ECS Exec for debugging/migrations
+      circuitBreaker: { rollback: true },
+      minHealthyPercent: 100,
+      maxHealthyPercent: 200,
+    });
+
+    // Frontend Task Definition (Fargate Spot for cost savings)
+    const frontendTaskDef = new ecs.FargateTaskDefinition(
+      this,
+      "FrontendTaskDef",
+      {
+        family: `rentall-frontend-${environment}`,
+        cpu: 256, // 0.25 vCPU
+        memoryLimitMiB: 512, // 512 MB
+      }
+    );
+
+    // Frontend container
+    const frontendContainer = frontendTaskDef.addContainer("frontend", {
+      containerName: "frontend",
+      image: ecs.ContainerImage.fromEcrRepository(frontendRepository, "latest"),
+      logging: ecs.LogDriver.awsLogs({
+        logGroup: frontendLogGroup,
+        streamPrefix: "frontend",
+      }),
+      portMappings: [
+        {
+          containerPort: 80,
+          protocol: ecs.Protocol.TCP,
+        },
+      ],
+      healthCheck: {
+        command: ["CMD-SHELL", "curl -f http://localhost:80/ || exit 1"],
+        interval: cdk.Duration.seconds(30),
+        timeout: cdk.Duration.seconds(5),
+        retries: 3,
+        startPeriod: cdk.Duration.seconds(30),
+      },
+    });
+
+    // Frontend Service (using Fargate Spot for 70% cost savings)
+    this.frontendService = new ecs.FargateService(this, "FrontendService", {
+      serviceName: `frontend-${environment}`,
+      cluster: this.cluster,
+      taskDefinition: frontendTaskDef,
+      desiredCount: 1,
+      securityGroups: [frontendSecurityGroup],
+      vpcSubnets: { subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS },
+      capacityProviderStrategies: [
+        {
+          capacityProvider: "FARGATE_SPOT",
+          weight: 1,
+        },
+      ],
+      circuitBreaker: { rollback: true },
+      minHealthyPercent: 100,
+      maxHealthyPercent: 200,
+    });
+
+    // Backend Target Group
+    const backendTargetGroup = new elbv2.ApplicationTargetGroup(
+      this,
+      "BackendTargetGroup",
+      {
+        targetGroupName: `backend-tg-${environment}`,
+        vpc,
+        port: 5000,
+        protocol: elbv2.ApplicationProtocol.HTTP,
+        targetType: elbv2.TargetType.IP,
+        healthCheck: {
+          path: "/api/health",
+          healthyHttpCodes: "200",
+          interval: cdk.Duration.seconds(30),
+          timeout: cdk.Duration.seconds(5),
+          healthyThresholdCount: 2,
+          unhealthyThresholdCount: 3,
+        },
+        deregistrationDelay: cdk.Duration.seconds(30),
+      }
+    );
+
+    // Register backend service with target group
+    this.backendService.attachToApplicationTargetGroup(backendTargetGroup);
+
+    // Frontend Target Group
+    const frontendTargetGroup = new elbv2.ApplicationTargetGroup(
+      this,
+      "FrontendTargetGroup",
+      {
+        targetGroupName: `frontend-tg-${environment}`,
+        vpc,
+        port: 80,
+        protocol: elbv2.ApplicationProtocol.HTTP,
+        targetType: elbv2.TargetType.IP,
+        healthCheck: {
+          path: "/",
+          healthyHttpCodes: "200",
+          interval: cdk.Duration.seconds(30),
+          timeout: cdk.Duration.seconds(5),
+          healthyThresholdCount: 2,
+          unhealthyThresholdCount: 3,
+        },
+        deregistrationDelay: cdk.Duration.seconds(30),
+      }
+    );
+
+    // Register frontend service with target group
+    this.frontendService.attachToApplicationTargetGroup(frontendTargetGroup);
+
+    // Configure listener rules for path-based routing
+    // /api/* -> backend
+    httpsListener.addTargetGroups("BackendRule", {
+      targetGroups: [backendTargetGroup],
+      priority: 10,
+      conditions: [elbv2.ListenerCondition.pathPatterns(["/api/*"])],
+    });
+
+    // /* -> frontend (default)
+    httpsListener.addTargetGroups("FrontendRule", {
+      targetGroups: [frontendTargetGroup],
+      priority: 20,
+      conditions: [elbv2.ListenerCondition.pathPatterns(["/*"])],
+    });
+
+    // Outputs
+    new cdk.CfnOutput(this, "ClusterName", {
+      value: this.cluster.clusterName,
+      description: "ECS Cluster name",
+      exportName: `ClusterName-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "AlbDnsName", {
+      value: this.alb.loadBalancerDnsName,
+      description: "ALB DNS name - add CNAME record pointing to this",
+      exportName: `AlbDnsName-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "AlbArn", {
+      value: this.alb.loadBalancerArn,
+      description: "ALB ARN",
+      exportName: `AlbArn-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "ServiceUrl", {
+      value: `https://${domainName}`,
+      description: "Service URL",
+    });
+
+    new cdk.CfnOutput(this, "BackendServiceName", {
+      value: this.backendService.serviceName,
+      description: "Backend service name",
+      exportName: `BackendServiceName-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "FrontendServiceName", {
+      value: this.frontendService.serviceName,
+      description: "Frontend service name",
+      exportName: `FrontendServiceName-${environment}`,
+    });
+
+    // Instructions for accessing the service
+    new cdk.CfnOutput(this, "DnsInstructions", {
+      value: `Add CNAME record: ${domainName} -> ${this.alb.loadBalancerDnsName}`,
+      description: "DNS configuration instructions",
+    });
+  }
+}

infrastructure/cdk/lib/rds-stack.ts

@@ -0,0 +1,174 @@
+import * as cdk from "aws-cdk-lib";
+import * as ec2 from "aws-cdk-lib/aws-ec2";
+import * as rds from "aws-cdk-lib/aws-rds";
+import * as secretsmanager from "aws-cdk-lib/aws-secretsmanager";
+import { Construct } from "constructs";
+
+interface RdsStackProps extends cdk.StackProps {
+  /**
+   * Environment name (dev, staging, prod)
+   */
+  environment: string;
+
+  /**
+   * VPC to deploy the database in
+   */
+  vpc: ec2.IVpc;
+
+  /**
+   * Database credentials secret from SecretsStack
+   */
+  databaseSecret: secretsmanager.ISecret;
+
+  /**
+   * Database name (default: rentall)
+   */
+  databaseName?: string;
+
+  /**
+   * Instance type (default: t3.micro for Free Tier)
+   */
+  instanceType?: ec2.InstanceType;
+
+  /**
+   * Allocated storage in GB (default: 20)
+   */
+  allocatedStorage?: number;
+
+  /**
+   * Enable Multi-AZ deployment (default: false for dev/staging)
+   */
+  multiAz?: boolean;
+
+  /**
+   * Backup retention days (default: 7)
+   */
+  backupRetentionDays?: number;
+}
+
+export class RdsStack extends cdk.Stack {
+  /**
+   * The RDS database instance
+   */
+  public readonly database: rds.DatabaseInstance;
+
+  /**
+   * Security group for the database
+   */
+  public readonly databaseSecurityGroup: ec2.SecurityGroup;
+
+  /**
+   * Database endpoint address
+   */
+  public readonly dbEndpoint: string;
+
+  /**
+   * Database port
+   */
+  public readonly dbPort: number;
+
+  constructor(scope: Construct, id: string, props: RdsStackProps) {
+    super(scope, id, props);
+
+    const {
+      environment,
+      vpc,
+      databaseSecret,
+      databaseName = "rentall",
+      instanceType = ec2.InstanceType.of(
+        ec2.InstanceClass.T3,
+        ec2.InstanceSize.MICRO
+      ),
+      allocatedStorage = 20,
+      multiAz = false,
+      backupRetentionDays = 7,
+    } = props;
+
+    // Security group for the database
+    this.databaseSecurityGroup = new ec2.SecurityGroup(
+      this,
+      "DatabaseSecurityGroup",
+      {
+        vpc,
+        securityGroupName: `rentall-db-sg-${environment}`,
+        description: `Security group for RDS database (${environment})`,
+        allowAllOutbound: false,
+      }
+    );
+
+    // Create the RDS instance
+    this.database = new rds.DatabaseInstance(this, "Database", {
+      instanceIdentifier: `rentall-db-${environment}`,
+      engine: rds.DatabaseInstanceEngine.postgres({
+        version: rds.PostgresEngineVersion.VER_15,
+      }),
+      instanceType,
+      vpc,
+      vpcSubnets: {
+        subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
+      },
+      securityGroups: [this.databaseSecurityGroup],
+      credentials: rds.Credentials.fromSecret(databaseSecret),
+      databaseName,
+      allocatedStorage,
+      maxAllocatedStorage: allocatedStorage * 2, // Allow storage autoscaling up to 2x
+      storageType: rds.StorageType.GP2,
+      multiAz,
+      autoMinorVersionUpgrade: true,
+      deletionProtection: environment === "prod",
+      removalPolicy:
+        environment === "prod"
+          ? cdk.RemovalPolicy.RETAIN
+          : cdk.RemovalPolicy.DESTROY,
+      backupRetention: cdk.Duration.days(backupRetentionDays),
+      preferredBackupWindow: "03:00-04:00", // UTC
+      preferredMaintenanceWindow: "Sun:04:00-Sun:05:00", // UTC
+      storageEncrypted: true,
+      monitoringInterval: cdk.Duration.seconds(60),
+      enablePerformanceInsights: true,
+      performanceInsightRetention: rds.PerformanceInsightRetention.DEFAULT, // 7 days (free)
+      parameterGroup: new rds.ParameterGroup(this, "ParameterGroup", {
+        engine: rds.DatabaseInstanceEngine.postgres({
+          version: rds.PostgresEngineVersion.VER_15,
+        }),
+        parameters: {
+          // Enforce SSL connections
+          "rds.force_ssl": "1",
+          // Log slow queries (> 1 second)
+          log_min_duration_statement: "1000",
+        },
+      }),
+      publiclyAccessible: false,
+    });
+
+    this.dbEndpoint = this.database.dbInstanceEndpointAddress;
+    this.dbPort = this.database.dbInstanceEndpointPort
+      ? parseInt(this.database.dbInstanceEndpointPort)
+      : 5432;
+
+    // Outputs
+    new cdk.CfnOutput(this, "DatabaseEndpoint", {
+      value: this.database.dbInstanceEndpointAddress,
+      description: "Database endpoint address",
+      exportName: `DatabaseEndpoint-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "DatabasePort", {
+      value: this.database.dbInstanceEndpointPort,
+      description: "Database port",
+      exportName: `DatabasePort-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "DatabaseSecurityGroupId", {
+      value: this.databaseSecurityGroup.securityGroupId,
+      description: "Database security group ID",
+      exportName: `DatabaseSecurityGroupId-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "DatabaseInstanceIdentifier", {
+      value: this.database.instanceIdentifier,
+      description: "Database instance identifier",
+      exportName: `DatabaseInstanceIdentifier-${environment}`,
+    });
+  }
+}

infrastructure/cdk/lib/secrets-stack.ts

@@ -0,0 +1,87 @@
+import * as cdk from "aws-cdk-lib";
+import * as secretsmanager from "aws-cdk-lib/aws-secretsmanager";
+import { Construct } from "constructs";
+
+interface SecretsStackProps extends cdk.StackProps {
+  /**
+   * Environment name (dev, staging, prod)
+   */
+  environment: string;
+
+  /**
+   * Database username (default: rentall_admin)
+   */
+  dbUsername?: string;
+}
+
+export class SecretsStack extends cdk.Stack {
+  /**
+   * Database credentials secret
+   */
+  public readonly databaseSecret: secretsmanager.Secret;
+
+  /**
+   * Application secrets (JWT, etc.)
+   */
+  public readonly appSecret: secretsmanager.Secret;
+
+  constructor(scope: Construct, id: string, props: SecretsStackProps) {
+    super(scope, id, props);
+
+    const { environment, dbUsername = "rentall_admin" } = props;
+
+    // Database credentials secret with auto-generated password
+    this.databaseSecret = new secretsmanager.Secret(this, "DatabaseSecret", {
+      secretName: `rentall/${environment}/database`,
+      description: `Database credentials for rentall ${environment} environment`,
+      generateSecretString: {
+        secretStringTemplate: JSON.stringify({
+          username: dbUsername,
+        }),
+        generateStringKey: "password",
+        excludePunctuation: true,
+        excludeCharacters: '/@"\'\\',
+        passwordLength: 32,
+      },
+    });
+
+    // Application secrets (JWT secret, etc.)
+    this.appSecret = new secretsmanager.Secret(this, "AppSecret", {
+      secretName: `rentall/${environment}/app`,
+      description: `Application secrets for rentall ${environment} environment`,
+      generateSecretString: {
+        secretStringTemplate: JSON.stringify({
+          // Add any additional app secrets here
+        }),
+        generateStringKey: "jwtSecret",
+        excludePunctuation: false,
+        passwordLength: 64,
+      },
+    });
+
+    // Outputs
+    new cdk.CfnOutput(this, "DatabaseSecretArn", {
+      value: this.databaseSecret.secretArn,
+      description: "Database credentials secret ARN",
+      exportName: `DatabaseSecretArn-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "DatabaseSecretName", {
+      value: this.databaseSecret.secretName,
+      description: "Database credentials secret name",
+      exportName: `DatabaseSecretName-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "AppSecretArn", {
+      value: this.appSecret.secretArn,
+      description: "Application secrets ARN",
+      exportName: `AppSecretArn-${environment}`,
+    });
+
+    new cdk.CfnOutput(this, "AppSecretName", {
+      value: this.appSecret.secretName,
+      description: "Application secrets name",
+      exportName: `AppSecretName-${environment}`,
+    });
+  }
+}