terraform 中的任务执行 IAM 角色

Posted 2023-03-04

【中文标题】terraform 中的任务执行 IAM 角色

【英文标题】：Task execution IAM role in terraform

【发布时间】：2020-12-05 19:29:10

【问题描述】：

我正在为任务执行创建一个 IAM 角色。我已经在 cloudformation 中完成了，现在我在 terraform 中进行，但我遇到的问题是在 cloudformation 中有一个属性可以提供ManagedPolicyArns，但是你将如何在 terraform 中提供它。我附上了两个脚本。 Terraform 脚本不完整，我需要帮助，而 cloudformation 脚本已完成，我想将其复制到 terraform。

地形：

resource "aws_iam_role" "task_execution" 
  name               = "task-execution-$terraform.workspace"
  assume_role_policy = <<EOF

    "Version": "2012-10-17",
    "Statement": [
        
        "Action": "sts:AssumeRole",
        "Principal": 
            "Service": "ecs-tasks.amazonaws.com"
        ,
        "Effect": "Allow",
        "Sid": "",
        "path": "/",
        
  ]

EOF

  tags = 
    tag-key = "tag-value"
  

云形成

---
AWSTemplateFormatVersion: 2010-09-09 
Parameters:
  Env:
    Type: String
Resources:
  ExRole:
      Type: 'AWS::IAM::Role'
      Properties:
        AssumeRolePolicyDocument:
          Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Principal:
                Service:
                  - ecs-tasks.amazonaws.com
              Action:
                - 'sts:AssumeRole'
        Path: /
        RoleName: !Sub "excutionrole-$Env"
        ManagedPolicyArns:
          - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy
        Policies: 
          - PolicyName: AccessECR
            PolicyDocument:
              Version: '2012-10-17'
              Statement:
                - Effect: Allow
                  Action: 
                    - ecr:BatchGetImage
                    - ecr:GetAuthorizationToken
                    - ecr:GetDownloadUrlForLayer 
                  Resource: '*'

【问题讨论】：

这能回答你的问题吗？ Terraform: correct way to attach AWS managed policies to a role?

【参考方案1】：

在 Terraform 中，您可以使用 iam_role_policy_attachment 资源将策略附加到角色：

resource "aws_iam_role_policy_attachment" "test-attach" 
    role       = aws_iam_role.test_role.name
    policy_arn = // ARN of the managed policy

【参考方案2】：

assume_role_policy 仅用于 信任关系（即谁/什么可以担任该角色）。因此， 你的aws_iam_role 应该是：

resource "aws_iam_role" "test_role" 
  name = "s3_access"

  assume_role_policy = <<EOF

    "Version": "2012-10-17",
    "Statement": [
        
            "Sid": "1",
            "Effect": "Allow",
            "Principal": 
              "Service": "ecs-tasks.amazonaws.com"
              ,
            "Action": "sts:AssumeRole"            
        
    ]

EOF

  tags = 
    tag-key = "tag-value"
  

然后，可以将所需的权限附加到角色，如下所示：

resource "aws_iam_role_policy_attachment" "ecs-task-permissions" 
    role       = aws_iam_role.test_role.name
    policy_arn = "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"



resource "aws_iam_role_policy" "ecr-access" 

  name = "ecs-access"
  
  role = aws_iam_role.test_role.name

  policy = <<EOF

    "Version": "2012-10-17",
    "Statement": [
        
            "Sid": "2",
            "Effect": "Allow",
            "Action": [
                "ecr:BatchGetImage",
                "ecr:GetAuthorizationToken",
                "ecr:GetDownloadUrlForLayer"
            ],
            "Resource": "*"
        
    ]

EOF

【讨论】：

它给出了一个错误Error: "assume_role_policy" contains an invalid JSON: invalid character '' looking for beginning of object key string

@aws-noob 它说的是哪一行？

``` 在模块/Iam_role/main.tf 第 1 行，在资源“aws_iam_role”“task_execution”中：1：资源“aws_iam_role”“task_execution”```

您能否用您的更改更新问题。似乎其他东西也必须改变，可能是错误的。

@aws-noob 没有戏剧性。如果您有任何问题，请随时提问：-) 我或其他人会尽力提供帮助。