节点Lambda AWS TimeouTerror:套接字超时，没有建立到cloudformation的连接

Question

{"errorType":"TimeoutError","errorMessage":"Socket timed out without establishing a connection","code":"TimeoutError","message":"Socket timed out without establishing a connection","time":"2020-06-29T03:10:27.668Z","region":"us-east-1","hostname":"cloudformation.us-east-1.amazonaws.com","retryable":true,"stack":["TimeoutError: Socket timed out without establishing a connection","    at Timeout.connectTimeout [as _onTimeout] (/var/task/node_modules/aws-sdk/lib/http/node.js:69:15)","    at listOnTimeout (internal/timers.js:549:17)","    at processTimers (internal/timers.js:492:7)"]}

测试事件：

{
  "stackName": "mySuccessfulStack",
  "app": "test"
}

函数我的处理程序调用（createStack）：

const AWS = require('aws-sdk');

const templates = {
    "test": {
      TemplateURL: "https://<bucket>.s3.amazonaws.com/<path_to_file>/test.template",
      Capabilities: ["CAPABILITY_IAM"],
      Parameters: {
        "HostingBucket": "test-hosting-bucket"
      }
    }
}

async function createStack(event) {
  AWS.config.update({
    maxRetries: 2,
    httpOptions: {
      timeout: 30000,
      connectTimeout: 5000
    }
  });
  const cloudformation = new AWS.CloudFormation();
  const { app, stackName } = event;
  let stackParams = templates[app];
  stackParams['StackName'] = app + "-" + stackName;
  let formattedTemplateParams = [];
  for (let [key, value] of Object.entries(stackParams.Parameters)) {
    formattedTemplateParams.push({"ParameterKey":key, "ParameterValue": value})
  }
  stackParams['Parameters'] = formattedTemplateParams;
  const result = await cloudformation.createStack(stackParams).promise();
  return result;
}

Answer 1

VPC中的Lambda函数不公开IP地址或internet访问。来自文档：

将您的函数连接到专用子网以访问专用资源。如果您的功能需要internet访问，请使用NAT。将函数连接到公共子网不会为其提供internet访问或公共IP地址。

有两种常见的解决方案：

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