How to troubleshoot Cloudformation "Invalid request provided: AWS::ElasticLoadBalancingV2::ListenerRule Validation exception"?

Question

My Cloudformation Template is running into this Error when trying to create a ListenerRule.:
>Resource handler returned message: "Invalid request provided: AWS::ElasticLoadBalancingV2::ListenerRule Validation exception" (RequestToken: d24b7617-9302-cf2e-f24c-78293248ea26, HandlerErrorCode: InvalidRequest)

the ListenerRule is straight Forward (AllocateAlbRulePriorityCustomResource.Priority returns a number between 1-50000):

```
ListenerRule:
    Type: AWS::ElasticLoadBalancingV2::ListenerRule
    Properties:
      Actions:
        - Type: forward
          TargetGroupArn: !Ref TargetGroup
      Conditions:
        - Field: host-header
          Values:
            - !Ref AppUrl
      ListenerArn: !Ref ListenerArn
      Priority: !GetAtt AllocateAlbRulePriorityCustomResource.Priority
```

how can i further troubleshoot and find out why exactly the ListenerRule is failing to be created?

Answer

You would want to use [Cloudformation's ability to disable rollback](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stack-failure-options.html) which keeps items that are successfully deployed instead of destroying all new resources. This allows you to investigate them and query the logs.

Answer

[AWS CloudFormation Linter](https://github.com/aws-cloudformation/cfn-lint) can help. Sometimes [validate-template](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/cloudformation/validate-template.html) will also help.

Answer

That error is often the result of a permissions issue, where the user or role creating the ListenerRule is not authorized to perform the elasticloadbalancing:CreateRule action on the ListenerRule being created.

Please refer to this thread: https://github.com/aws/aws-cdk/issues/12327#issuecomment-1149336304.

Please refer to this thread: [https://github.com/aws/aws-cdk/issues/12327#issuecomment-1149336304](https://github.com/aws/aws-cdk/issues/12327#issuecomment-1149336304).

How to troubleshoot Cloudformation "Invalid request provided: AWS::ElasticLoadBalancingV2::ListenerRule Validation exception"?

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