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How to Create Namespace in Kubernetes

How to Create Namespace in Kubernetes, How to Create Kubernetes Namespace, how to create namespace in kubernetes, kubernetes namespace tutorial
How to Create Namespace in Kubernetes

Kubernetes is an open-source container orchestration system that helps to automate the deployment, scaling, and management of containerized applications. One of the essential features of Kubernetes is namespaces, which provide a way to divide cluster resources between multiple users, teams, or applications. In this article, we will discuss how to create a namespace in Kubernetes.

Table of Contents

  • What is a Namespace in Kubernetes?
  • How to Create a Namespace in Kubernetes?
  • Verification of Namespace Creation
  • More Examples

What is a Namespace in Kubernetes?

A namespace is a logical partition of a Kubernetes cluster that provides a scope for names. Namespaces are used to organize and isolate resources within a cluster. By default, Kubernetes provides four namespaces: default, kube-system, kube-public, and kube-node-lease. You can create your own namespace to manage your resources in a more organized manner.

How to Create a Namespace in Kubernetes?

Creating a namespace in Kubernetes is a straightforward process. Here are the steps to create a namespace:

Step 1: Open a terminal window and connect to your Kubernetes cluster.

Step 2: Use the following command to create a new namespace named "example-namespace":

kubectl create namespace example-namespace

In this example, we are creating a namespace called "example-namespace." You can replace this with the name of your choice.

Step 3: Verify that the namespace has been created successfully by running the following command:

kubectl get namespaces

This command will display a list of all the namespaces in your Kubernetes cluster, including the new namespace you just created.

Verification of Namespace Creation:

To verify the creation of a namespace, you can use the following command:

kubectl describe namespace example-namespace

This command will provide you with detailed information about the new namespace, including its creation date and the name of the user who created it.

More Examples:

Here are some additional examples of creating namespaces in Kubernetes:

  • To create a namespace with a specific label, use the following command:
kubectl create namespace example-namespace --labels=env=production
  • To create a namespace with a specific resource quota, use the following command:
kubectl create namespace example-namespace --resource-quota=cpu=2,memory=2G
  • To create a namespace with a specific namespace type, use the following command:
kubectl create namespace example-namespace --type=public

Namespaces are an essential feature of Kubernetes that help you organize and isolate your resources. By creating a namespace, you can separate your resources from other users or teams and manage them more effectively. Creating a namespace is a straightforward process that can be completed using the kubectl command-line tool.

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  • That's it for this post. Keep practicing and have fun. Leave your comments if any.