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If you’re having trouble with your stages not deploying properly when running ‘sam deploy’, there’s a simple fix that can help. When creating an API Gateway in AWS SAM, you need to specify the ‘StageName’ property inside your AWS::Serverless::Api resource. However, sometimes the default stage is just set to “Prod” no matter what you try. To fix this, add the ‘OpenApiVersion’ property to your SAM template—its value doesn’t matter much, it could be 2.0 or 3.0.1. Doing this corrects the stage name issue and makes your custom stage names work properly.
For organizing your API deployments, there are a few approaches you can try:
First, you can create one API Gateway resource and manage multiple stages, like ‘test’ and ‘prod’. This keeps your API setup simple and consistent across different environments, just deploying different stages when needed.
Alternatively, you can set up separate stacks for your infrastructure and your application code. For example, have a core stack that contains your API Gateway setup. Then, create individual stacks for testing and production, each with its own Lambda functions and stage configurations. This approach provides more control and makes it easier to maintain and update each environment independently.
You can also use stage variables to customize configurations for each environment. Stage variables can point to different Lambda functions or configurations depending on whether you’re deploying to test or production. Just keep in mind that if your Lambda functions depend on these variables, you might need to manually set permissions to allow your API to invoke them.
When deploying APIs with SAM, remember that API Gateway requires both a deployment and a stage for your API to be accessible. The deployment captures the current API setup, and the stage links that deployment to a specific URL. If your ‘sam deploy’ is not creating stages as expected, make sure you’re specifying the ‘StageName’ properly in your SAM template—they should be created automatically.
It’s also helpful to note that if you’re running into issues with missing deployment IDs or stage creation errors, double-check that your deployment commands and settings are correct, and that your CloudFormation templates are properly configured.
These steps should help you manage your stages more effectively and ensure your API deployments go smoothly.
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