问AWS :无法连接到EC2实例中运行的EC2服务器

EN

import {
  Stack,
  StackProps,
  aws_ec2 as ec2,
  aws_ecs as ecs,
} from 'aws-cdk-lib';
import { Construct } from 'constructs';

export class MyStack extends Stack {
  constructor(scope: Construct, id: string, props?: StackProps) {
    super(scope, id, props);

    // VPC
    const vpc = new ec2.Vpc(this, 'VPC', {
      enableDnsSupport: true,
      enableDnsHostnames: true,
      subnetConfiguration: [{ name: 'PublicSubnet', subnetType: ec2.SubnetType.PUBLIC }],
    });

    // ECS
    const cluster = new ecs.Cluster(this, 'Cluster', {
      vpc,
      capacity: {
        instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.NANO),
        machineImage: ecs.EcsOptimizedImage.amazonLinux(),
        desiredCapacity: 1,
      },
    });
    cluster.connections.allowFromAnyIpv4(ec2.Port.tcp(80));

    // TASK DEFINITION
    const taskDefinition = new ecs.Ec2TaskDefinition(this, 'TaskDef', {
      networkMode: ecs.NetworkMode.AWS_VPC,
    });

    const container = taskDefinition.addContainer('HelloWorldContainer', {
      image: ecs.ContainerImage.fromRegistry('nginxdemos/hello'),
      memoryReservationMiB: 256,
      portMappings: [
        {
          containerPort: 80,
          protocol: ecs.Protocol.TCP,
        },
      ],
    });

    const service = new ecs.Ec2Service(this, 'Service', {
      cluster,
      taskDefinition,
    });
    service.connections.allowFromAnyIpv4(ec2.Port.tcp(80));
  }
}