SAM Builds in CodePipeline: A buildspec.yml Deep Dive
Deep-dive into configuring your SAM application with CodePipeline and CodeBuild using buildspec.yaml, highlighting key configurations for seamless deployments.
Published Apr 27, 2025
Your CodeBuild project uses a
buildspec.yaml to run the AWS SAM commands for packaging and deployment:- ā Note: The packaged SAM template (
packaged.yaml) is generated from your originaltemplate.yaml. Thispackaged.yamlis referenced explicitly in your pipeline for deployment.
Ensure your AWS CodePipeline explicitly uses the
packaged.yaml created during the build stage:- ā Note: The
OnFailure: ROLLBACKensures that failed deployments automatically roll back to the last known stable configuration.
The AWS CodeBuild environment explicitly specifies the artifact bucket (
S3_BUCKET) as an environment variable:- ā Tip: This setup ensures secure and easy management of environment-specific configurations.
Your SAM
template.yaml should correctly reference the artifact files created during the build:- ā Important: The
CodeUripath aligns precisely with the artifacts specified inbuildspec.yaml.
This robust SAM build and deployment setup allows seamless integration into your CI/CD workflow, ensuring consistent, automated deployments and rollbacks.
For a complete walk-through on the AWS CodePipeline automatic rollback integration, refer to my detailed blog:
š Summary & Key Takeaways:
- Clearly configure your build and deploy stages with
buildspec.yaml. - Use environment variables effectively for secure, maintainable pipelines.
- Ensure precise artifact referencing to avoid deployment inconsistencies.
- Automatically roll back to maintain application stability.
Now you're ready to build more resilient, serverless applications with AWS SAM and CodePipeline! š
š About the Author
PBKN is a 12x AWS Certified (AWStronaut) & Official AWS SME & Community Builder
PBKN is a 12x AWS Certified (AWStronaut) & Official AWS SME & Community Builder
Follow on - https://www.linkedin.com/in/pbkn/
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