未授权错误:使用boto3从启动模板运行AWS Lambda EC2实例

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英文:

Not Authorised Error: AWS lambda ec2.run_instances from launch template with boto3

问题

我试图从我的Lambda运行AWS EC2实例。从本地计算机创建实例时,我尝试过以下操作:

import boto3

launchTemplateId = 'lt-000'

ec2 = boto3.client('ec2', region_name='ap-xx-1')

template_specifics = {
    'LaunchTemplateId': launchTemplateId
}

resp = ec2.run_instances(
    MaxCount=1, 
    MinCount=1,
    LaunchTemplate=template_specifics,
    ImageId='ami-00000'
    )

print(resp['ResponseMetadata']['HTTPStatusCode'])

而我在Lambda上尝试了以下操作:

def create_instance(lt_id, img_id, region):
    """从启动模板创建实例。"""
    ec2 = boto3.client('ec2', region_name=region)
    resp = ec2.run_instances(
        MaxCount=1, 
        MinCount=1,
        LaunchTemplate={
            'LaunchTemplateId': lt_id
          },
        ImageId=img_id
      )

    return(resp['ResponseMetadata']['HTTPStatusCode'])

使用IAM策略如下:

....
{
    "Effect": "Allow", 
    "Action": [
        "iam:PassRole",
    ],
    "Resource": "arn:aws:iam::${data.aws_caller_identity.current.account_id}:role/${aws_iam_role.xx_role.name}"
},
{
    "Effect": "Allow",
    "Action": [
        "ec2:*"
    ],
    "Resource": "arn:aws:ec2:${var.aws_region}:${data.aws_caller_identity.current.account_id}:*"
}
......

请注意,我甚至尝试了通配符*,甚至根据这个评论建议添加了PassRole,但每次都显示以下错误:

ClientError: An error occurred (UnauthorizedOperation) when calling the RunInstances operation: You are not authorized to perform this operation. ......

Traceback (most recent call last):
  File "/var/task/xxxx.py", line 153, in xxxx_handler
    instance_create_resp = create_instance(lt_id, img_id, region)
  File "/var/task/xxxx.py", line 79, in create_instance
    resp = ec2.run_instances(
  File "/var/runtime/botocore/client.py", line 391, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/var/runtime/botocore/client.py", line 719, in _make_api_call
    raise error_class(parsed_response, operation_name)

我做错了什么?有任何想法将非常有帮助。

更新
我能够追踪到问题,它是由于“tags”和“InstanceProfile”引起的此错误。

TagSpecifications=[{
              'ResourceType': 'instance',
              'Tags': [
                  { 'Key': 'Name',
                    'Value': 'name'
                  }]
}],
IamInstanceProfile={
          'Name': PROFILE
          },

这会导致相同的错误,否则它可以正常工作。

英文:

I am trying to run aws ec2 instances from my lambda.
Creating instance from local machine works when I tried this -

import boto3

launchTemplateId = 'lt-000'

ec2 = boto3.client('ec2', region_name='ap-xx-1')

template_specifics = {
    'LaunchTemplateId': launchTemplateId
}

resp = ec2.run_instances(
    MaxCount=1, 
    MinCount=1,
    LaunchTemplate=template_specifics,
    ImageId='ami-00000'
    )

print(resp['ResponseMetadata']['HTTPStatusCode'])

And I am trying this on lambda -

def create_instance(lt_id, img_id, region):
    """ creates instance from launch template. """
    ec2 = boto3.client('ec2', region_name=region)
    resp = ec2.run_instances(
        MaxCount=1, 
        MinCount=1,
        LaunchTemplate={
            'LaunchTemplateId':lt_id
          },
        ImageId=img_id
      )

    return(resp['ResponseMetadata']['HTTPStatusCode'])

with IAM policy -

....
    {
        # "Sid": "PassExecutionRole",
        "Effect": "Allow", 
        "Action": [
            "iam:PassRole",
        ],
        "Resource": "arn:aws:iam::${data.aws_caller_identity.current.account_id}:role/${aws_iam_role.xx_role.name}"
    },
    {
        "Effect": "Allow",
        "Action": [
            "ec2:*"
            # "ec2:StartInstances",
            # "ec2:RunInstances"
        ],
        # "resource": "*"
        "Resource": "arn:aws:ec2:${var.aws_region}:${data.aws_caller_identity.current.account_id}:*"
    }
......

Notice I even tried with wildcard * too, even added passRole as a comment suggested but every time it just shows this error -

ClientError: An error occurred (UnauthorizedOperation) when calling the RunInstances operation: You are not authorized to perform this operation. ......

Traceback (most recent call last):
  File "/var/task/xxxx.py", line 153, in xxxx_handler
    instance_create_resp = create_instance(lt_id, img_id, region)
  File "/var/task/xxxx.py", line 79, in create_instance
    resp = ec2.run_instances(
  File "/var/runtime/botocore/client.py", line 391, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/var/runtime/botocore/client.py", line 719, in _make_api_call
    raise error_class(parsed_response, operation_name)

What am I doing wrong?
Any ideas will be much helpful.

UPDATE
I was able to track down the problem and it's 'tags' and 'InstanceProfile' which are causing this error.

TagSpecifications=[{
              'ResourceType': 'instance',
              'Tags': [
                  { 'Key': 'Name',
                    'Value': 'name'
                  }]
}],
IamInstanceProfile={
          'Name': PROFILE
          },

This causes the same error, else it works.

答案1

得分: 0

解决方案:
在创建时,Lambda 没有权限来“标记”资源“ec2”。我不得不根据文档建议,将“ec2:CreateTags”添加到策略中,这解决了问题。

{
   "Action": [
      "ec2:RunInstances"
   ],
   "Effect": "Allow",
   "Resource": "*"
},
{
   "Effect": "Allow",
   "Action": [
      "ec2:CreateTags"
   ],
   "Resource": "arn:aws:ec2:${var.aws_region}:${data.aws_caller_identity.current.account_id}:*/*",
   "Condition": {
      "StringEquals": {
         "ec2:CreateAction": "RunInstances"
      }
   }
}

注意:您还需要添加sts权限以传递角色。

祝一切顺利。

英文:

Solution:
The lambda did not have permission to Tag resource ec2 while creating. I had to add "ec2:CreateTags" to the policy as the doc suggested, and this solved the issue.

{
      "Action": [
        "ec2:RunInstances"
      ],
      "Effect": "Allow",
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": [
         "ec2:CreateTags"
      ],
      "Resource": "arn:aws:ec2:${var.aws_region}:${data.aws_caller_identity.current.account_id}:*/*",
      "Condition": {
         "StringEquals": {
             "ec2:CreateAction" : "RunInstances"
          }
       }
    }

> Note: You will also need to add sts permission for passing role.

Best wishes.

huangapple
  • 本文由 发表于 2023年1月9日 15:18:18
  • 转载请务必保留本文链接:https://go.coder-hub.com/75054152.html
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