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.