Creating custom namespaces in Kubernetes - Try It Yourself

Creating custom namespaces

📖 Scenario: You are managing a Kubernetes cluster for a small company. To keep resources organized, you want to create a custom namespace called project-alpha. Namespaces help separate resources like pods and services so teams can work independently.

🎯 Goal: Learn how to create a custom namespace in Kubernetes using a YAML configuration file and apply it with kubectl.

📋 What You'll Learn

Create a YAML file defining a namespace named project-alpha

Use kubectl to apply the YAML file and create the namespace

Verify the namespace was created by listing all namespaces

💡 Why This Matters

🌍 Real World

Namespaces help organize and separate resources in Kubernetes clusters, making it easier to manage multiple projects or teams.

💼 Career

Knowing how to create and manage namespaces is essential for Kubernetes administrators and DevOps engineers to maintain clean and secure cluster environments.

1

Create a YAML file for the namespace

Create a file named namespace.yaml with the exact content below to define a namespace called project-alpha:

apiVersion: v1
kind: Namespace
metadata:
  name: project-alpha

Kubernetes

# Create the namespace.yaml file with the required content
# Your code here

Need a hint?

Remember, the YAML file must start with apiVersion: v1 and kind: Namespace. The metadata section must have name: project-alpha.

2

Apply the namespace YAML file

Run the command kubectl apply -f namespace.yaml to create the project-alpha namespace in your Kubernetes cluster.

Kubernetes

apiVersion: v1
kind: Namespace
metadata:
  name: project-alpha

# Run the kubectl apply command below
# Your code here

Need a hint?

Use kubectl apply -f namespace.yaml exactly to create the namespace.

3

Verify the namespace creation

Run the command kubectl get namespaces to list all namespaces and confirm that project-alpha appears in the list.

Kubernetes

# Run the command to list namespaces
# Your code here

Need a hint?

Use kubectl get namespaces to see all namespaces including project-alpha.

4

Show the namespace in the output

Run kubectl get namespaces and ensure the output includes the line with project-alpha.

Kubernetes

# Check the output for project-alpha
# Your code here

Need a hint?

The output of kubectl get namespaces should list project-alpha among the namespaces.