python - 无法通过 lambda 函数承担角色 - Python

Question

您好，我从昨天开始就遇到了这个奇怪的问题。当我尝试在 pycharm 上手动运行它并打印 request_url 时，我有一个 python 模块 web_token.py，它完全可以正常工作并输出 requested_url。但是，当我将我的 web_token.py 和 fetch_accounts.py 压缩在一起并将其上传到 lambda 函数时，它给了我以下错误 -

An error occurred (AccessDenied) when calling the AssumeRole operation: User: arn:aws:sts::5398XXXXXXX:assumed-role/sandbox-amp_sandbox-dev/sandbox-dev-amp_sandbox is not authorized to perform: sts:AssumeRole on resource: arn:aws:iam::4540XXXXXXXX:role/AMPSandbox

我什至尝试给它 FullAdministrativeAccess 但它似乎仍然有效。虽然我能够在 pycharm 中以 stanalone 模式运行 web_token.py 时生成 requested_url。有人可以提供一些指导，将不胜感激。

代码片段来自

retrieve_accounts.py

import boto3

import web_token


def get_account(event, context):
    client = boto3.client('dynamodb')
    NameID = "test@orgz.com"
    ManagerEmail = "test1@orgaz.com"
    response = client.scan(
        TableName='Sandbox-Users',
        ScanFilter={
            'NameID': {
                'AttributeValueList': [
                    {
                        'S': NameID,
                    },
                ],
                'ComparisonOperator': 'EQ'
            }
        }
    )
    return web_token.request_url

web_token.py

import httplib
import urllib, json
import boto3

client = boto3.client('sts')
assumed_role_object = client.assume_role(
    RoleArn="arn:aws:iam::4540XXXXXXXX:role/AMPSandboxRole",
    RoleSessionName="AssumeRoleSession"
)

# Step 3: Format resulting temporary credentials into JSON
json_string_with_temp_credentials = '{'
json_string_with_temp_credentials += '"sessionId":"' + assumed_role_object.get("Credentials").get("AccessKeyId") + '",'
json_string_with_temp_credentials += '"sessionKey":"' + assumed_role_object.get("Credentials").get("SecretAccessKey") + '",'
json_string_with_temp_credentials += '"sessionToken":"' + assumed_role_object.get("Credentials").get("SessionToken") + '"'
json_string_with_temp_credentials += '}'

# Step 4. Make request to AWS federation endpoint to get sign-in token. Construct the parameter string with
# the sign-in action request, a 12-hour session duration, and the JSON document with temporary credentials
# as parameters.
request_parameters = "?Action=getSigninToken"
request_parameters += "&SessionDuration=43200"
request_parameters += "&Session=" + urllib.quote_plus(json_string_with_temp_credentials)
request_url = "/federation" + request_parameters

conn = httplib.HTTPSConnection("signin.aws.amazon.com")
conn.request("GET", request_url)
r = conn.getresponse()
# Returns a JSON document with a single element named SigninToken.
signin_token = json.loads(r.read())

request_parameters = "?Action=login"
request_parameters += "&Issuer=sandbox.com"
request_parameters += "&Destination=" + urllib.quote_plus("https://console.aws.amazon.com/")
request_parameters += "&SigninToken=" + signin_token["SigninToken"]
request_url = "https://signin.aws.amazon.com/federation" + request_parameters

更新:我有两个策略附加到 sandbox-amp_sandbox-dev 角色 -

InfraLoggingPolicy[in 5398XXXXXXX]

    {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": [
                "sqs:SendMessage",
                "sqs:SendMessageBatch"
            ],
            "Resource": "arn:aws:sqs:*:131703196249:org-logging-prod",
            "Effect": "Allow"
        },
        {
            "Action": [
                "ec2:DescribeInstances",
                "logs:CreateLogGroup",
                "logs:CreateLogStream",
                "logs:PutLogEvents"
            ],
            "Resource": "*",
            "Effect": "Allow"
        },
        {
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": [
                "arn:aws:s3:::em-log-intake-us-east-1-prod/*",
                "arn:aws:s3:::em-log-intake-us-west-2-prod/*"
            ]
        }
    ]
}

sandbox-amp_sandbox-policy-dev[在 5398XXXXXXX]

    {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "",
            "Effect": "Allow",
            "Action": "dynamodb:*",
            "Resource": "arn:aws:dynamodb:*:*:*"
        }
    ]
}

更新 2.0以上政策来 self 的账号5398XXXXXXX。我在 4540XXXXXXXX 帐户 AMPSandboxRole 中有以下角色，我在该角色下有以下政策

AssumeRole[在 4540XXXXXXXX]

    {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Resource": "arn:aws:iam::*:role/AMPSandboxRole",
            "Action": "sts:AssumeRole"
        }
    ]
}

[4540XXXXXXXX] 中的组织访问权限

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "organizations:Describe*",
                "organizations:List*",
                "organizations:CreateAccount",
                "organizations:MoveAccount"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "organizations:MoveAccount"
            ],
            "Resource": "arn:aws:organizations::454084028794:root/o-eyec2h6qr0/r-ekzh"
        },
        {
            "Effect": "Allow",
            "Action": [
                "organizations:*"
            ],
            "Resource": "arn:aws:organizations::45xxxxxxxxxx:ou/o-eyec2h6qr0/ou-ekzh-x2xcsupl"
        }
    ]
}

更新 3.045xxxxxxxxxx中的信任关系

 {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::53xxxxxxxxxx:root"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

Answer 1

错误说:

User: arn:aws:sts::5398XXXXXXX:assumed-role/sandbox-amp_sandbox-dev/sandbox-dev-amp_sandbox is not authorized to perform: sts:AssumeRole on resource: arn:aws:iam::4540XXXXXXXX:role/AMPSandbox

AWS Lambda 函数正在您上面列出的角色下执行。它只有调用 dynamodb:* 的权限。 它还需要调用 AssumeRole 的权限。

您的政策应更新为:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "PermitDynamoDB",
      "Action": "dynamodb:*",
      "Effect": "Allow",
      "Resource": "*"
    },
    {
      "Sid": "PermitAssumeRole",
      "Action": [
        "sts:AssumeRole"
      ],
      "Effect": "Allow",
      "Resource": "arn:aws:iam::4540XXXXXXXX:role/AMPSandboxRole"
    }
  ]
}