AWS CDK -创建AWS ECS服务时出现的模糊错误

Question

我有下面的CDK代码来创建ECS服务。

注意：堆栈还没有完全配置，具体来说，我没有码头映像资产，也没有任何附加到集群的能力。我的意图是，设置基础结构所需的最低限度代码，不同的代码对Cloudformation模板的贡献，以及所选择的默认值。

CDK代码：

index.ts

#!/usr/bin/env node
import 'source-map-support/register';
import cdk = require('@aws-cdk/cdk');
import { HelloCdkStack } from '../lib/hello-cdk-stack';

const app = new cdk.App();
new HelloCdkStack(app, 'hellocdk-stack');

lib/hello-cdk-stack.ts

import cdk = require('@aws-cdk/cdk');
import ecs = require('@aws-cdk/aws-ecs');
import ec2 = require('@aws-cdk/aws-ec2');

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

    const td = new ecs.Ec2TaskDefinition(scope, 'hellocdk-taskdef');

    const vpc = new ec2.Vpc(scope, 'hellocdk-vpc');

    const cluster = new ecs.Cluster(scope, 'hellocdk-cluster', {
      vpc: vpc,
    });

    new ecs.Ec2Service(scope, 'hellocdk-service', {
      taskDefinition: td,
      cluster: cluster,
    });
  }
}

运行cdk synth或cdk bootstrap (与npm run build一起)将生成以下错误-

⇒  cdk bootstrap

/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/stack.ts:65
        throw new Error(`No stack could be identified for the construct at path ${construct.node.path}`);
              ^
Error: No stack could be identified for the construct at path hellocdk-taskrole/Resource
    at _lookup (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/stack.ts:65:15)
    at _lookup (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/stack.ts:68:14)
    at _lookup (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/stack.ts:68:14)
    at Function.of (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/stack.ts:57:12)
    at new CfnElement (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/cfn-element.ts:58:24)
    at new CfnRefElement (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/cfn-element.ts:165:1)
    at new CfnResource (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/cdk/lib/cfn-resource.ts:90:5)
    at new CfnRole (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/aws-iam/lib/iam.generated.ts:946:9)
    at new Role (/Users/nija/workplace/cdk/hello-cdk/node_modules/@aws-cdk/aws-iam/lib/role.ts:212:18)
    at new HelloCdkStack (/Users/nija/workplace/cdk/hello-cdk/lib/hello-cdk-stack.ts:10:22)
Subprocess exited with error 1

cdk doctor的输出-

⇒  cdk doctor
ℹ️ CDK Version: 0.35.0 (build c5e43e2)
ℹ️ AWS environment variables:
  - AWS_ACCESS_KEY_ID = ASIA<redacted>
  - AWS_SECRET_ACCESS_KEY = <redacted>
  - AWS_SESSION_TOKEN = <redacted>
ℹ️ No CDK environment variables```

Answer 1

参考资料的第一个参数应该是Stack(this)，而不是App(作用域)。

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

    const td = new ecs.Ec2TaskDefinition(this, 'hellocdk-taskdef');

    const vpc = new ec2.Vpc(this, 'hellocdk-vpc');

    const cluster = new ecs.Cluster(this, 'hellocdk-cluster', {
      vpc: vpc,
    });

    new ecs.Ec2Service(this, 'hellocdk-service', {
      taskDefinition: td,
      cluster: cluster,
    });
  }
}