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Closest alternative to nested stack can be cross stack but that may not necessarily fit into your use case. But with AWS cross stack, you can refer resource output from one stack to another cloudformation stack.
Please take a look at following documentations and see if this can fit into your use case.
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Walkthrough: Refer to resource outputs in another AWS CloudFormation stack
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aws-cloudformation-update-yaml-cross-stack-references-simplified-substitution
Hope you find this helpful.
Comment here if you have additional questions.
Abhishek
Hi, This very recent blog post details how to coordinate complex resource dependencies across CloudFormation stacks.
It looks like what you want to achieve.
Best,
Didier
Absolutely, you can achieve a cleaner and more organized AWS Cloud Formation template structure by splitting your stack resources into separate files and including them without resorting to nested stacks. This approach is highly beneficial for managing large-scale templates with numerous resources. Here's how you can accomplish this using YAML:
MainTemplate.yaml: In your main template, you can use the Resources section to include the resources from separate files using the AWS::Include transform. Here's an example: AWSTemplateFormatVersion: '2010-09-09' Transform: 'AWS::Include' Resources: Resource1: Type: 'AWS::CloudFormation::Include' Properties: Location: Resource1.yaml Resource2: Type: 'AWS::CloudFormation::Include' Properties: Location: Resource2.yaml
... continue for other resources
Absolutely, you can achieve a cleaner and more organized AWS CloudFormation template structure by splitting your stack resources into separate files and including them without resorting to nested stacks. This approach is highly beneficial for managing large-scale templates with numerous resources. Here's how you can accomplish this using YAML:
MainTemplate.yaml: In your main template, you can use the Resources section to include the resources from separate files using the AWS::Include transform. Here's an example: yaml Copy code AWSTemplateFormatVersion: '2010-09-09' Transform: 'AWS::Include' Resources: Resource1: Type: 'AWS::CloudFormation::Include' Properties: Location: Resource1.yaml Resource2: Type: 'AWS::CloudFormation::Include' Properties: Location: Resource2.yaml
... continue for other resources
Resource5.yaml: In your Resource5.yaml file, you can include sub-resources using the same technique. For instance: AWSTemplateFormatVersion: '2010-09-09' Transform: 'AWS::Include' Resources: Resource5: Type: 'AWS::CloudFormation::Include' Properties: Location: Sub1Resource5.yaml
... include other sub-resources similarly
Sharing Parameters and Resources: You can define shared parameters and resources in a separate file, let's call it CommonResources.yaml, and then include it in your individual resource files. For example: AWSTemplateFormatVersion: '2010-09-09' Parameters: SharedParameter: Type: String Default: SharedParameterValue
Resources: SharedResource: Type: AWS::SomeResourceType Properties: # Properties of the shared resource In Resource1.yaml: AWSTemplateFormatVersion: '2010-09-09' Transform: 'AWS::Include' Resources: Resource1: Type: 'AWS::CloudFormation::Include' Properties: Location: CommonResources.yaml This approach maintains clarity, modularity, and reusabilityhttps://proracketreviews.com/making your CloudFormation template significantly more manageable. It also allows you to maintain a consistent structure across different files while sharing parameters and resources effectively.
Hope this helps! If you have any further questions, feel free to ask.
