Mozilla SOPS helps manage Kubernetes Secrets.

Kubernetes is incredibly popular largely thanks to its flexibility. It can also be deployed quickly thanks to its modularity. To maintain that modularity, however, you need to construct your cloud environment in a fluid and customizable way; that means making sure that ConfigMaps and Secrets are designed to be infrastructure-agnostic.

You may also enjoy:  Kubernetes Secrets Management

Secrets, in particular, are easy to integrate with existing services. You can store sensitive configuration options—including tokens and user IDs—to keep the containers as easy to deploy as possible. In fact, a well-configured Secret allows for the containers to be deployed across multiple environments and clusters.