I initially created all my resources in AWS manually. Now I'm trying to use CloudFormation (SAM) templates to create all my new resources. Is there any way I can all my old (manually created) resource to this CF template and hence forth use this CF to make modification to those old resources?
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5 Answers
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Not possible to add existing resources to a cloudformation template and have them managed from there on in with Cloudformation - but you can have a look at using CloudFormer (https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-using-cloudformer.html) to create a cloudformation template for you from existing resources.
It won't manage the existing resources, but it will create a template so that you can launch the same resources again.
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You can import existing resources in your new stack ! https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resource-import-existing-stack.html
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It is not possible to add existing resources to CloudFormation template directly, but you can deploy a CloudFormer stack to create a template from existing resources.
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-using-cloudformer.html
After successful creation of that template, you can use the cross-stack reference in which you can define parameters to import/export values of existing resources.
Also, for more details of how to define parameters and import/export values, you can go through the below link: https://aws.amazon.com/premiumsupport/knowledge-center/cloudformation-reference-resource/
Note: After deployment of the template created by CloudFormer, you can vanish your existing resources as it newly deployed through the stack.
Hope this helps!
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This is now possible with an update from AWS, see here for more details
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resource-import.html
