通过 CloudFormation 创建时，AWS 事件桥规则角色未附加到事件桥

Question

我有一个 Cloudformation 模板来创建事件桥接规则，目标是另一个帐户中的中央事件总线 运行ning。当我 运行 下面的代码时，IAM 角色和事件桥都被创建，但 IAM 角色没有附加到 eventbridge 规则。下面是我正在使用的 yaml 模板。

另请参阅随附的屏幕截图。

AWSTemplateFormatVersion: 2010-09-09
Resources:
    EventRuleRegion1:
        Type: AWS::Events::Rule
        Properties: 
            Description: Event rule to send events to monitoring account event bus
            EventBusName: default
            EventPattern:
                source:
                    - aws.ec2
                    
            Name: ec2-lifecycle-events2
            RoleArn: !GetAtt
                - EventBridgeIAMrole
                - Arn
            State: ENABLED
            Targets: 
                - Arn: >-
                    arn:aws:events:ap-southeast-2:123456789123:event-bus/central-eventbus-sydney
                  Id: 'central-eventbus-sydney'
                  
                  
    
    
    EventBridgeIAMrole:
        Type: 'AWS::IAM::Role'
        Properties:
            AssumeRolePolicyDocument:
                Version: 2012-10-17
                Statement:
                    - Effect: Allow
                      Principal:
                        Service: !Sub events.amazonaws.com
                      Action: 'sts:AssumeRole'
            Path: /
            Policies:
                - PolicyName: PutEventsDestinationBus
                  PolicyDocument:
                    Version: 2012-10-17
                    Statement:
                        - Effect: Allow
                          Action:
                            - 'events:PutEvents'
                          Resource:
                            - >-
                              arn:aws:events:ap-southeast-2:123456789123:event-bus/central-eventbus-sydney

显示创建和附加的角色的手动创建的事件规则。

角色中的政策

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "events:PutEvents"
            ],
            "Resource": [
                "arn:aws:events:ap-southeast-2:123456789123:event-bus/central-eventbus-sydney"
            ]
        }
    ]
}

Answer 1

Cross-account权限不是使用角色设置的，而是EventBus资源权限。来自 [文档][1]:

The permissions for an event bus are granted or denied using a resource-based policy attached to the event bus.

要在 CloudFormation 中执行此操作，您必须开发自己的 custom resource。

更新

您还没有为您的目标指定 RoleArn。这与您现在的 RoleArn 不同。