Kubernetes RBAC: Least Privilege in Practice
When everything has cluster-admin, nothing is secure. Kubernetes RBAC (Role-Based Access Control) exists to answer one question: who can do what to which resources? Most clusters answer incorrectly: “everyone can do everything.” This isn’t just a security problem — it’s a resilience problem. When a service account gets compromised, how much damage can it do? When someone runs the wrong command, what’s the blast radius? Least privilege limits that radius. ...