Javascript 在 Node.js AWS SDK 中配置区域

Configuring region in Node.js AWS SDK

提问by Anejah Daniels

Can someone explain how to fix a missing config error with Node.js? I've followed all the examples from the aws doc pagebut I still get this error no matter what.

有人可以解释如何使用 Node.js 修复丢失的配置错误吗？我已经遵循了aws doc 页面中的所有示例，但无论如何我仍然收到此错误。

{ [ConfigError: Missing region in config]
message: 'Missing region in config',
code: 'ConfigError',
time: Wed Jun 24 2015 21:39:58 GMT-0400 (EDT) }>{ thumbnail: 
 { fieldname: 'thumbnail',
 originalname: 'testDoc.pdf',
 name: 'testDoc.pdf',
 encoding: '7bit',
 mimetype: 'application/pdf',
path: 'uploads/testDoc.pdf',
 extension: 'pdf',
 size: 24,
 truncated: false,
 buffer: null } }
 POST / 200 81.530 ms - -

Here is my code:

这是我的代码：

var express = require('express');
var router = express.Router();
var AWS = require('aws-sdk');
var dd = new AWS.DynamoDB();
var s3 = new AWS.S3();
var bucketName = 'my-bucket';

AWS.config.update({region:'us-east-1'});

(...)

回答by umbrel

How about changing the order of statements? Update AWS config before instantiating s3 and dd

如何改变语句的顺序？在实例化 s3 和 dd 之前更新 AWS 配置

var AWS = require('aws-sdk');
AWS.config.update({region:'us-east-1'});

var dd = new AWS.DynamoDB();
var s3 = new AWS.S3();

回答by Zanon

I had the same issue "Missing region in config" and in my case it was that, unlike in the CLI or Python SDK, the Node SDK won't read from the ~\.aws\configfile.

我有同样的问题“配置中缺少区域”，在我的情况下，与 CLI 或 Python SDK 不同，Node SDK 不会从~\.aws\config文件中读取。

To solve this, you have three options:

要解决这个问题，您有三个选择：

1. Configure it programmatically (hard-coded): AWS.config.update({region:'your-region'});

2. Use an environment variable. While the CLI uses AWS_DEFAULT_REGION, the Node SDK uses AWS_REGION.

3. Load from a JSON file using AWS.config.loadFromPath('./config.json');

1. 以编程方式配置（硬编码）： AWS.config.update({region:'your-region'});

2. 使用环境变量。当 CLI 使用 时AWS_DEFAULT_REGION，Node SDK 使用AWS_REGION.

3. 使用从 JSON 文件加载 AWS.config.loadFromPath('./config.json');

JSON format:

JSON 格式：

{ 
    "accessKeyId": "akid", 
    "secretAccessKey": "secret", 
    "region": "us-east-1" 
}

回答by Peter Dotchev

If you work with AWS CLI, you probably have a default region defined in ~/.aws/config. Unfortunately AWS SDK for JavaScript does not load it by default. To load it define env var

如果您使用 AWS CLI，您可能在 ~/.aws/config 中定义了一个默认区域。不幸的是，AWS SDK for JavaScript 默认不会加载它。要加载它定义 env var

AWS_SDK_LOAD_CONFIG=1

See https://github.com/aws/aws-sdk-js/pull/1391

见https://github.com/aws/aws-sdk-js/pull/1391

回答by WaffleSouffle

You can specify the region when creating the dynamodb connection (haven't tried s3 but that should work too).

您可以在创建 dynamodb 连接时指定区域（还没有尝试过 s3，但应该也可以）。

var AWS = require('aws-sdk');
var dd = new AWS.DynamoDB({'region': 'us-east-1'});

回答by BHUVNESH KUMAR

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

// assign AWS credentials here in following way:

// 通过以下方式在此处分配 AWS 凭证：

AWS.config.update({
  accessKeyId: 'asdjsadkskdskskdk',
  secretAccessKey: 'sdsadsissdiidicdsi',
  region: 'us-east-1'
});

var dd = new AWS.DynamoDB();
var s3 = new AWS.S3();

回答by Himanshu Tongya

I have gone through your code and here you are connecting to AWS services before setting the region, so i suggest you to update the region first and then connect to services or create instance of those as below -

我已经完成了您的代码，在这里您在设置区域之前连接到 AWS 服务，因此我建议您先更新区域，然后连接到服务或创建以下服务的实例 -

var express = require('express');
var router = express.Router();
var AWS = require('aws-sdk');
AWS.config.update({region:'us-east-1'});

var dd = new AWS.DynamoDB();
var s3 = new AWS.S3();
var bucketName = 'my-bucket';

回答by Manohar Reddy Poreddy

Same error for me:

对我来说同样的错误：

After doing a lot of trials I have settled on the below:

经过大量试验，我确定了以下内容：

OPTION 1

选项1

1. set the AWS_REGIONenvironment variable in local system only, to us-east-1(example)

1. AWS_REGION仅在本地系统中设置环境变量，以us-east-1（示例）

For Linux:

对于 Linux：

export AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
export AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
export AWS_DEFAULT_REGION=us-east-1

导出 AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
导出 AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
导出 AWS_DEFAULT_REGION=us-east-1

For Windows
see: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-envvars.html

对于 Windows，
请参阅：https: //docs.aws.amazon.com/cli/latest/userguide/cli-configure-envvars.html

1. now, no need to set any lambda variables for region

2. also, no need to use in code, for example:

   • AWS.config.update(...), this is notrequired
   • AWS.S3(), etc., these will work without any problems. In place of S3, there can be any aws service

2. 现在，无需为区域设置任何 lambda 变量

3. 此外，无需在代码中使用，例如：

   • AWS.config.update(...)，这不是必需的
   • AWS.S3()等，这些都可以正常工作。代替 S3，可以有任何 aws 服务

In a rare caseif somewhere some defaults are assumed in code and you are forced to send region, then use {'region': process.env.AWS_REGION})

在极少数情况下，如果代码中假定了某些默认值并且您被迫发送区域，则使用{'region': process.env.AWS_REGION})

---

---

OPTION 2

选项 2

Instead of environment variables, another way is AWS CONFIG file:

而不是环境变量，另一种方法是 AWS CONFIG 文件：

On Linux you can create below files:

在 Linux 上，您可以创建以下文件：

~/.aws/credentials

~/.aws/凭证

[default]
aws_access_key_id=AKIAIOSFODNN7EXAMPLE
aws_secret_access_key=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

~/.aws/config

~/.aws/config

[default]
region=us-west-2
output=json

See https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html

请参阅https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html

回答by Tony

This may not be the right way to do it, but I have all my configs in a separate JSON file. And this does fix the issue for me

这可能不是正确的方法，但我将所有配置都放在一个单独的 JSON 文件中。这确实为我解决了这个问题

To load the AWS config, i do this:

要加载 AWS 配置，我这样做：

var awsConfig = config.aws;
AWS.config.region = awsConfig.region;
AWS.config.credentials = {
    accessKeyId: awsConfig.accessKeyId,
    secretAccessKey: awsConfig.secretAccessKey
}

config.aws is just a JSON file.

config.aws 只是一个 JSON 文件。

回答by Sajeetharan

You could create a common module and use it based on the region you want to

您可以创建一个通用模块并根据您想要的区域使用它

var AWS = require('aws-sdk')

module.exports = {
    getClient: function(region) {
        AWS.config.update({ region: region })
        return new AWS.S3()
    }
}

and consume it as,

并将其消耗为，

 var s3Client = s3.getClient(config.region)

the idea is to Update AWS config before instantiating s3

这个想法是在实例化 s3 之前更新 AWS 配置