Golden Amazon Machine Images (AMIs) are the foundation for launching consistent and efficient instances in your AWS cloud environment. Ensuring their security and immutability is paramount. This guide delves into how Software Bill of Materials (SBOMs), cryptographic signing, and runtime validation create a robust framework for building and maintaining secure golden AMIs.
Steps Involved in Building Golden AMIs
| Step | Description |
|---|---|
| Start with a Trusted Base Image | Begin by selecting a minimal, reputable base image, such as AWS-provided base AMIs that are regularly updated with the latest security patches. |
| Add Necessary Packages | Install required packages using package managers like yum, apt, or pip. Ensure that packages are sourced from trusted repositories and specify version numbers for consistency. |
| Configure Users and Permissions | Follow the Principle of Least Privilege when creating user accounts, removing unnecessary default users and groups. Configure SSH for key-based authentication and restrict root access. |
| Functional Testing | Verify the functionality of installed software and applications, including network connectivity and essential system services, to ensure everything works as expected. |
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