Sealed Secrets allows users to encrypt Kubernetes secrets so they can be stored in Git repositories or other insecure storage without compromising security. The project addresses the challenge of managing sensitive secrets while leveraging the benefits of version control. It uses a two-part system: a cluster-side controller and a client-side utility called kubeseal. The utility encrypts secrets, and the controller decrypts them within the Kubernetes cluster when needed, ensuring that only the controller can access the original secret data.
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Secure Storage: Secrets can be safely stored in public repositories, eliminating the risk of exposing sensitive information during version control.
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Controller-Only Decryption: Only the Sealed Secrets controller running in the cluster can decrypt the sealed secrets, ensuring strong confidentiality.
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Templates for Secrets:
SealedSecretresources act as templates for the unsealed Secrets, preserving metadata and annotations. -
Easy to use: The
kubesealtool simplifies the process of encrypting and decrypting secrets, offering both command-line and programmatic interfaces. -
Auditability: Changes to
SealedSecretresources are tracked in the Kubernetes API, providing an audit trail of secret management operations. -
Cross-Platform Support: Supports various operating systems including Linux, macOS, and Windows.
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Helm Chart: Provides a Helm chart for easy deployment of the Sealed Secrets controller in Kubernetes.
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Client-Side Utility:
kubesealutility allows encryption and decryption of secrets from the command line. -
Secret Rotation: Supports automated secret rotation to enhance security.
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Extensible: Allows for custom validation and approval workflows to be integrated.
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Integration with Kubernetes: Seamlessly integrates with Kubernetes secrets objects.
The project has been actively developed and maintained since 2017 with a strong community support. It has a stable release cycle, regular updates including security fixes, and comprehensive documentation. The project has robust CI/CD pipelines and a healthy number of contributors. Recent activity includes ongoing improvements to features like key rotation and certificate management. Issues are tracked and addressed promptly, indicating a commitment to reliability and long-term maintainability.
Sealed Secrets benefits developers and DevOps teams by providing a secure and convenient way to manage Kubernetes secrets in a GitOps workflow. By decoupling secret storage from cluster access, it allows you to maintain version control over sensitive configuration while ensuring only authorized entities can access the decrypted secrets. It enhances security, simplifies secret management, and improves collaboration in software development.