How to securely store passwords in Kubernetes? What is the External Secrets Operator?

In Kubernetes, passwords and other secrets are recommended to be stored in a Secret object, which is encrypted and accessible only to the necessary pods. However, standard Secrets are stored in etcd in base64 encoding, which is not encryption, so additional measures are often used for security:

• Enabling data encryption at the etcd level.
• Using external secret management systems (HashiCorp Vault, AWS Secrets Manager, etc.).
• Automatic secret updates and rotation.

External Secrets Operator is a Kubernetes operator that allows integration of external secret management systems with Kubernetes. It automatically synchronizes secrets from external stores (e.g., AWS Secrets Manager, HashiCorp Vault) into Kubernetes Secrets, ensuring secure and centralized management of passwords and other confidential data.

Thus, External Secrets Operator helps securely store and update passwords in Kubernetes, minimizing the risk of leaks and simplifying secret management.