Default namespaces overview in Kubernetes - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a namespace in Kubernetes?

A namespace in Kubernetes is like a folder that helps organize and separate resources inside a cluster. It keeps things tidy and avoids conflicts.

beginner

Name the three default namespaces in Kubernetes.

The three default namespaces are: default, kube-system, and kube-public.

beginner

What is the purpose of the default namespace?

The default namespace is where Kubernetes puts your resources if you don't specify any other namespace. It's like the general workspace.

intermediate

What kind of resources are stored in the kube-system namespace?

The kube-system namespace holds system components that run Kubernetes itself, like the scheduler and controller manager. It's for internal cluster tools.

intermediate

Why does Kubernetes have a kube-public namespace?

The kube-public namespace is readable by all users and is used for resources that should be visible to everyone, like cluster info.

Which namespace is used by default when none is specified?

A custom

B kube-system

C kube-public

D default

If you don't specify a namespace, Kubernetes uses the 'default' namespace automatically.

What type of resources are found in the kube-system namespace?

A User applications

B Kubernetes system components

C Public cluster info

D Temporary files

The kube-system namespace contains Kubernetes system components like the scheduler and controller manager.

Which namespace is readable by all users and used for public cluster information?

A kube-public

B default

C kube-system

D admin

The kube-public namespace is readable by all users and holds public cluster information.

If you want to isolate resources for a project, what should you do instead of using default namespaces?

A Use the default namespace

B Delete default namespace

C Create a new namespace

D Use kube-public

Creating a new namespace helps isolate resources for different projects or teams.

Which namespace should you avoid modifying directly because it contains critical system components?

A kube-system

B kube-public

C default

D user

The kube-system namespace contains critical system components and should not be modified directly.

Explain the roles of the three default namespaces in Kubernetes.

Think about who uses each namespace and what kind of resources they hold.

Why is it important to use namespaces in Kubernetes?

Consider how namespaces help keep things tidy and secure.