Kubernetes Namespace Concepts

External

• https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces

Internal

• Kubernetes Concepts

Overview

A namespace is a construct that allows logically dividing a Kubernetes cluster for management purposes, a logical partition of a Kubernetes cluster. A namespace provides scope for:

• named resources to avoid naming collisions
• delegating management authority to trusted users
• the ability to limit community resource consumption via limits, quotas and RBAC rules.

In OpenShift, namespaces are known as OpenShift Projects.

A namespace is NOT a strong security boundary. Also, the namespace mechanism cannot guarantee that a pod in one namespace will not impact a pod in another namespace.

Object names must be unique within a specific namespace.

The Default Namespace

It's not good practice to use the default namespace for anything of significance.

Namespace Operations

Namespace Operations

- the value of this field for those objects will be empty. Must be a DNS_LABEL. Cannot be updated. More info: http://kubernetes.io/docs/user-guide/namespaces