NodeJS：aws-sdk sts.assumeRole无法正常工作

debugcn 发表于 Dev

沙彦汗

我有一个奇怪的问题，我似乎无处可去。我已经在线上关注了所有内容（有多个教程等），但是无法使sts.assumeRole正常工作。

我的设置：

AWS主账户（用于计费，IAM等）
次级AWS账户1（用于客户1）
次级AWS账户2（用于客户2）
等等

我有一个机器人在Sub AWS账户1中运行，我需要从Main AWS账户获取价格信息。

因此，我在主AWS账户上创建了一个角色，以具有以下AWS ce：*访问权限：

{
    "Version": "2012-10-17",
    "Statement": [{
            "Effect": "Allow",
            "Action": ["ce:*"],
            "Resource": ["*"]
        }]
}

信任关系

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "ec2.amazonaws.com",
        "AWS": "arn:aws:iam::SubAWSaccount1-ID:role/instance-profile"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

现在，这是附加到在Sub AWS帐户1上运行的EC2实例的实例配置文件：

"Version": "2012-10-17",
"Statement": [
    {
        "Sid": "VisualEditor1",
        "Effect": "Allow",
        "Action": "sts:AssumeRole",
        "Resource": "arn:aws:iam::mainAWSaccount-ID:role/botRole"
    }
  ]
}

信任关系

{
  "Version": "2012-10-17",
  "Statement": [
   {
    "Sid": "",
    "Effect": "Allow",
    "Principal": {
      "Service": "ec2.amazonaws.com"
    },
    "Action": "sts:AssumeRole"
   }
  ]
}

好的，顺便说一下，这是不起作用的代码：

var AWS = require('aws-sdk');
var pricingAWS = new AWS.CostExplorer();

var getPricing = function(){

    var costParams = {
        TimePeriod: { Start: "2019-12-01 ", End: "2020-01-01"},
        Granularity: 'MONTHLY',
        Metrics: ['BlendedCost'],
        Filter: {      
            Dimensions: {
                Key: "LINKED_ACCOUNT",
                Values: ["Sub AWS account 2s ID"] //Main AWS account has access to many sub accounts info. So bot in running on Sub account 1, I need info from Sub account 1, 2, 3 etc and Role is on Main account
            }
        }
    };

    var roleToAssume = {
        RoleArn: 'arn:aws:iam::mainAWSaccount-ID:role/botRole',
        RoleSessionName: 'testTestTest',
        DurationSeconds: 900
    };

    var roleCreds = {};

    sts.assumeRole(roleToAssume, function(err, data) {
        if (err) {
            console.log(err);
        } else {
            roleCreds = {
                accessKeyId: data.Credentials.AccessKeyId,
                secretAccessKey: data.Credentials.SecretAccessKey,
                sessionToken: data.Credentials.SessionToken
            };

            pricingAWS.config.update({
                accessKeyId: roleCreds.AccessKeyId,
                secretAccessKey: roleCreds.SecretAccessKey,
                sessionToken: roleCreds.SessionToken
              });
        }
    });

    pricingAWS.getCostAndUsage(costParams, function (err, data) {
        if (err) {
            reject(err);
        }else{
            resolve(data);
        }
    });
};

getPricing();

我从console.log（err）得到的是：

User: arn:aws:sts::SubAWSAccount-1:assumed-role/slack-instance-profile/instanceID is not authorized to perform: ce:GetCostAndUsage on resource: arn:aws:ce:us-east-1:SubAWSAccount-1:/GetCostAndUsage'

阿伦·K

为了确认我的理解，您正在尝试从另一个帐户的ec2实例在一个帐户中扮演角色。

在child帐户中创建IAM角色
main通过附加IAM策略，允许上述新创建的角色假定该角色存在于帐户中。通过主要角色的信任策略允许子角色承担主要角色（您已经在执行此操作）
在子ec2实例中运行的Nodejs代码中，担任父角色并阅读帐单报告（您已经在执行此操作）

代码修复

将pricingAWS.getCostAndUsage()行移入承担角色回调。因为该行是在更新凭据之前调用的：)。您还可以将所有内容更改为异步/等待，如下所示。

import AWS = require('aws-sdk');
var pricingAWS = new AWS.CostExplorer();
const sts = new AWS.STS()

var getPricing = async function () {

  var costParams = {
    TimePeriod: { Start: "2019-12-01 ", End: "2020-01-01" },
    Granularity: 'MONTHLY',
    Metrics: ['BlendedCost'],
    Filter: {
      Dimensions: {
        Key: "LINKED_ACCOUNT",
        Values: ["Sub AWS account 2s ID"] //Main AWS account has access to many sub accounts info. So bot in running on Sub account 1, I need info from Sub account 1, 2, 3 etc and Role is on Main account
      }
    }
  };

  var roleToAssume = {
    RoleArn: 'arn:aws:iam::mainAWSaccount-ID:role/botRole',
    RoleSessionName: 'testTestTest',
    DurationSeconds: 900
  };

  var roleCreds = {};


  try {

    const data = await sts.assumeRole(roleToAssume).promise();
    const roleCreds = {
      accessKeyId: data.Credentials.AccessKeyId,
      secretAccessKey: data.Credentials.SecretAccessKey,
      sessionToken: data.Credentials.SessionToken
    };

    pricingAWS.config.update({
      accessKeyId: roleCreds.accessKeyId,
      secretAccessKey: roleCreds.secretAccessKey,
      sessionToken: roleCreds.sessionToken
    });

    const costAndUsage = await pricingAWS.getCostAndUsage(costParams).promise()
    return costAndUsage
  } catch (err) {
    console.log('error: ', err);
    throw err;
  }

};

getPricing();

希望这可以帮助。

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