CKA Certification Course 2025 - Day 36: Kubernetes RBAC Authorization Explained | CKA Course 2025

Day 36: Kubernetes RBAC Authorization Explained | CKA Course 2025 👉 GitHub Repository: https://github.com/CloudWithVarJosh/CKA-Certification-Course-2025 👉 CKA 2025 Playlist: https://youtube.com/playlist?list=PLmPit9IIdzwRjqD-l_sZBDdPlcSfKqpAt&si=1JNRkoNa75AOJx0o 📚 Welcome to Day 36! Today we dive into one of the most foundational authorization mechanisms in Kubernetes: RBAC (Role-Based Access Control). This lecture is entirely hands-on and designed to give you a clear understanding of how roles and bindings work — whether you're working within a single namespace or granting access across the cluster. We begin by introducing the building blocks: Role, RoleBinding, ClusterRole, and ClusterRoleBinding — including key differences, real-world use cases, and practical considerations. Then we move on to three focused demos to show you exactly how these constructs are applied in real clusters. 📝 What We’ll Cover: ✅ What is RBAC and why Kubernetes uses it ✅ Roles vs ClusterRoles — and when to use which ✅ RoleBindings vs ClusterRoleBindings ✅ Common RBAC patterns for users, groups, and service accounts ✅ Reusing ClusterRoles in different namespaces ✅ Accessing resources across multiple namespaces with ClusterRoles ✅ Real-world demos showing RBAC in action 💡 By the end of this lecture: You’ll be able to confidently design and apply RBAC policies in Kubernetes clusters. Whether you're giving a user access to pods in one namespace or granting team-wide deployment access across all environments, you’ll know how to do it cleanly and securely. 🔗 Stay Connected: 👉 LinkedIn: https://linkedin.com/in/varun-joshi-2b516752 👉 GitHub: https://github.com/CloudWithVarJosh 💬 Got questions? Drop them in the comments — I’ll reply ASAP! 🔥 Don’t forget to like, share, and subscribe to stay updated with the CKA 2025 series! ⏰ Timestamps: 00:00:00 – Introduction 00:00:37 – Pre-requisites and Key Concepts 00:01:45 – What is RBAC Authorization? 00:04:03 – Roles vs ClusterRoles | RoleBindings vs ClusterRoleBindings 00:10:04 – Demo 1: Role and RoleBinding 00:27:02 – Demo 2: ClusterRole and ClusterRoleBinding 00:30:32 – Demo 3: Using ClusterRole with RoleBinding 00:38:32 – Outro & Next Steps 🔖 Hashtags: #Kubernetes #CKA #CloudWithVarJosh #KubernetesRBAC #RBAC #RoleBinding #ClusterRole #CKACourse #CKA2025 #CKAExam #DevOps #KubernetesSecurity #KubernetesAccess #ClusterSecurity #ServiceAccounts #KubernetesAuthorization #KubernetesRoles #AuthorizationFlow #CKALecture #KubernetesTraining #SecureClusters