my-docs/Containerization & Orchestration/Kubernetes/workloads/01-NameSpace.md

Kubernetes Namespaces Guide

Kubernetes namespaces allow you to organize and isolate resources within your cluster.

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🧾 Listing Namespaces

To list all namespaces:

kubectl get namespaces

or the shorthand:

kubectl get ns

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🛠️ Creating a Namespace

Create a new namespace:

kubectl create namespace <namespace-name>

or:

kubectl create ns <namespace-name>

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🗑️ Deleting a Namespace

Delete a namespace:

kubectl delete ns <namespace-name>

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⚠️ Best Practices & Notes

• Namespaces are isolated, but they can still communicate with each other by default.
• It is not recommended to create namespaces that start with kube-, as those are typically reserved for system components.

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📄 Creating a Namespace with a Manifest

You can define a namespace using a YAML manifest:

apiVersion: v1
kind: Namespace
metadata:
  name: namespace-test

Apply it using:

kubectl apply -f namespace.yaml