CODEWITHSUNDEEP
amazon-web-servicesaws-cloudformation
user401445
user401445

Reputation: 1014

CloudFormation: Create a resource only in specific stage

I have a use case where I want to create a resource only in test environment using cloud formation. I'm trying to use conditionals to achieve this but it fails.

 Resources: 
    TestClientRole:
        Type: AWS::IAM::Role
        Condition: NotProdStage
        Properties:
          AssumeRolePolicyDocument:
            Statement:
            - Action: <>
              Effect: Allow
              <>
            Version: '2012-10-17'
          RoleName:
            "some-test-role"

It works fine in non-prod stages, but fails with "Unresolved resource dependencies [TestClientRole] in the Resources block of the template"

How to make cloud formation ignore resources for prod stages?

Upvotes: 0

Views: 1111

Answers (1)

John Rotenstein
John Rotenstein

Reputation: 269370

The error message is indicating that there is a dependency on TestClientRole elsewhere in your CloudFormation template.

The problem is that the Role is not being created in a Prod environment, yet the other resource is saying that it is dependent on the role being created.

Solution: Remove the dependency elsewhere in your template that refers to TestClientRole.

In fact, it is very rare to actually require dependencies because CloudFormation figures out the correct build order based upon references between resources. The only time you need a dependency is when you specifically want one thing to finish building before another starts, such as having an app server wait until a database server is ready. Typically, leave them out unless you have a particular need that is non-obvious.

Upvotes: 2

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