配置错误：Config 中缺少区域 (AWS)

Question

我在运行节点应用程序时遇到配置错误。错误是：

{ ConfigError: Missing region in config
at Request.VALIDATE_REGION (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:12027:47)
at Request.callListeners (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:11804:22)
at callNextListener (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:11794:14)
at C:\Users\chris\Documents\AWS API TEST\myapp\node_modules\aws-
sdk\dist\aws-sdk-react-native.js:12021:11
at finish (C:\Users\chris\Documents\AWS API TEST\myapp\node_modules\aws-
sdk\dist\aws-sdk-react-native.js:10842:9)
at Config.getCredentials (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:10887:9)
at Request.VALIDATE_CREDENTIALS (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:12016:28)
at Request.callListeners (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:11800:20)
at Request.emit (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:11776:12)
at Request.emit (C:\Users\chris\Documents\AWS API 
TEST\myapp\node_modules\aws-sdk\dist\aws-sdk-react-native.js:13792:16)
message: 'Missing region in config',
code: 'ConfigError',

我的代码是：

//Authenticate AWS:
var myCredentials = new AWS.CognitoIdentityCredentials({IdentityPoolId:'us-west-2a:"Identity Pool ID"'});
var myConfig = new AWS.Config({
          credentials: myCredentials, region: 'us-west-2a'
});

这是在使用 ejs 和节点的快速服务器上运行的。我正在使用 Amazon JavaScript SDK。

我在这里尝试了解决方案：

AWSCognito Missing region in config error

这没有帮助。

编辑 1：

根据下面的要求，我附上了完整的代码：

var express = require('express');
var AWS = require('aws-sdk');
var EC2 = require('aws-ec2')('access key', 'secret');
var scale = require('aws-scale');
var router = express.Router();

//Authenticate AWS:
var myCredentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId:'us-west-2:b0efe3c7-e4c9-420f-836b-6d776e2a9271'
}); 

var myConfig = new AWS.Config({
  credentials: myCredentials, region: 'us-west-2'
});

AWS.config = myConfig

var minInst = 1;
var maxInst = 3;

var ec2 = new AWS.EC2();
//Set up parameters for EC2 Instances:
var params = {
  ImageId: 'ami-6e1a0117',
  MaxCount: minInst,
  MinCount: maxInst, 
  InstanceInitiatedShutdownBehavior: 'terminate',
  InstanceType: 't2.micro',
  Monitoring: {
    Enabled: true 
  },
  NetworkInterfaces: [{
    AssociatePublicIpAddress: true,
    DeleteOnTermination: true,
  }],
  Placement: {
    AvailabilityZone: 'us-west-2',
  },
  SecurityGroupIds: [
    'sg-b0307ccd',
  ],
  SecurityGroups: [
    'CAB432Assignment2SG',
  ],

};
ec2.runInstances(params, function(err, data) {
  if (err){
    console.log(err, err.stack); //An error occurred
  }
  else{
    console.log(data); //Successful Response
  }
});

Answer 1

像这样在你的配置中添加区域：

AWS.config.update({
    region: "REGION" //Here add you region
});

请将其添加到最顶层（var ec2 = new AWS.EC2(); 行上方）

Answer 2

俄勒冈地区的正确代码是us-west-2。您在两个地方都设置为us-west-2a。

在提及身份池ID的同时，更正如下代码并尝试：

AWS.config.update({region:'us-west-2'});
var myCredentials = new AWS.CognitoIdentityCredentials({
    IdentityPoolId:'us-west-2:"Identity Pool ID"'
});

如果您没有为 API CognitoIdentityCredentials 传递 区域，那么它将从 AWS.config。

另外，在您的代码中，在使用 region 名称初始化 AWS.CONFIG 时，您使用了 us-west-2a。更正它，如果您打算使用它而不是 AWS.config.update。

var myConfig = new AWS.Config({
    credentials: myCredentials, region: 'us-west-2'
});

更新

我发现了另一个问题。问题是，您正在使用 var myConfig = new AWS.Config() 初始化 AWS.config，但您不更新 AWS.config 类回来了。缺少的代码是：AWS.config = myConfig。

由于您没有将其更新回来，并且您也没有使用 AWS.config.update({region:'us-west-2'}); 更新现有的默认类，因此它会引发 Missing region in config 错误。

正确的代码 sn-p

var AWS = require('aws-sdk');
var myCredentials = new AWS.CognitoIdentityCredentials({
    IdentityPoolId:'us-west-2:identity-pool-id'
}); 
var myConfig = new AWS.Config({
    credentials: myCredentials, region: 'us-west-2'
});
AWS.config = myConfig

Answer 3

上面的答案是正确的。 但是，对于aws-sdk-js-v3，您不能全局设置AWS.config。 因此，解决方法是：

process.env.AWS_REGION = 'us-west-2'

此外，如果您在 CI 构建期间收到有关无法访问 "169.254.169.254:80/latest/meta-data/iam/security-credentials/" 的错误，您可能希望以相同的方式设置虚假凭据：

process.env.AWS_REGION = 'us-west-2'
process.env.AWS_ACCESS_KEY_ID = 'test-key'
process.env.AWS_SECRET_ACCESS_KEY = 'test-secret'

Answer 4

在您的情况下，这是执行顺序（这就是副作用不好的原因）。

错误：

var myCredentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId:'us-west-2:b0efe3c7-e4c9-420f-836b-6d776e2a9271'
}); 

var myConfig = new AWS.Config({
  credentials: myCredentials, region: 'us-west-2'
});

正确：

// update the config
var myConfig = new AWS.Config({
  credentials: myCredentials, region: 'us-west-2'
});

// then create the instance
var myCredentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId:'us-west-2:b0efe3c7-e4c9-420f-836b-6d776e2a9271'
});