Is it advisable to store secret data in the same version control repository as your Terraform configuration?

Storing secret data in the same version control repository as your Terraform configuration is not advisable because it raises significant security concerns. When sensitive information, such as API keys, passwords, and other secrets, is included in version control, it can be exposed to anyone who has access to that repository. This exposure can lead to unauthorized access to critical systems and services, potentially resulting in data breaches or security incidents.

It's recognized as a best practice to use dedicated secret management solutions, such as HashiCorp Vault, AWS Secrets Manager, or similar tools, which are designed to securely store and manage sensitive data. By separating configuration from secret management, you limit the risk of accidental disclosure and enhance your overall security posture.

While some might argue that storing secrets in the same repository simplifies management or provides easier access, these benefits are outweighed by the potential risks associated with exposing sensitive information. Proper security measures encourage the use of encrypted storage, environment variables, or secret management tools, which protect sensitive data while allowing developers to manage their Terraform configurations effectively and securely.