[Solved] What is the main difference between a RoleBinding and a ClusterRoleBinding in Kubernetes? — Ans: RoleBinding grants permissions within a single namespace, while... | Kubernetes

Kubernetes - RBAC and Security

What is the main difference between a RoleBinding and a ClusterRoleBinding in Kubernetes?

A<code>RoleBinding</code> and <code>ClusterRoleBinding</code> are exactly the same.

B

<code>RoleBinding</code> grants permissions cluster-wide, while <code>ClusterRoleBinding</code> grants permissions within a single namespace.

C<code>RoleBinding</code> is used only for system users, <code>ClusterRoleBinding</code> is for regular users.

D

<code>RoleBinding</code> grants permissions within a single namespace, while <code>ClusterRoleBinding</code> grants permissions cluster-wide.

Step-by-Step Solution

Solution:

Step 1: Understand RoleBinding scope
RoleBinding assigns permissions only inside one namespace.
Step 2: Understand ClusterRoleBinding scope
ClusterRoleBinding assigns permissions across the entire cluster, not limited to a namespace.
Final Answer:
RoleBinding is namespace-scoped; ClusterRoleBinding is cluster-scoped. -> Option D
Quick Check:
Scope difference = RoleBinding grants permissions within a single namespace, while ClusterRoleBinding grants permissions cluster-wide. [OK]

Quick Trick: Remember: RoleBinding = namespace, ClusterRoleBinding = whole cluster [OK]

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What is the main difference between a RoleBinding and a ClusterRoleBinding in Kubernetes?