What is the role of Namespace in Kubernetes and why is it used?

A Namespace in Kubernetes is a logical resource isolator within a cluster. It is used to separate and organize objects (pods, services, configurations, etc.) between different teams, projects, or environments.

Main tasks of Namespace:

• Resource and name isolation: objects with the same names can coexist in different Namespaces.
• Access control: permissions can be set (RBAC) at the Namespace level.
• Resource limitation: quotas for CPU, memory, and other resources can be set for a Namespace.

Example: in one cluster, a Namespace dev can be created for development and prod for production to separate environments and manage them independently.