RBAC (Role-Based Access Control) is a key feature of Kubernetes that allows administrators to control access to cluster resources by defining Roles and assigning permissions to different users, groups, and service accounts. As the number of users and workloads in a Kubernetes cluster grows, managing access control becomes increasingly complex. Using RBAC, you can manage access control at a higher level using configuration management tools. You can define access control policies as code and version them with the rest of the infrastructure. Following Kubernetes RBAC best practices gives many security advantages, such as fine-grained access control and the ability to define Roles with minimal permissions.
This article covers the fundamental concepts of Kubernetes RBAC along with some practical use cases.