Kubernetes - Namespaces

Prerequisites

• Kubernetes
• kubectl

Assignment

• Lets start by creating a pod in the default namespace and then in a user defined namespace.

1️⃣ List all the resources created in the K8 cluster and review the existing namespaces.

kubectl get all -A

2️⃣ List all the namespaces.

kubectl get namespaces

3️⃣ Run a pod without specifying a namespace run in the default namespace.

kubectl run nginx --image=nginx

4️⃣ Create a user defined namespace and run a pod inside that namespace.

kubectl create namespace mynamespace
kubectl -n mynamespace run nginx --image=nginx
kubectl -n mynamespace get pods

5️⃣ Change the default namespace from default to a user defined namespace.

kubectl config set-context --current --namespace=mynamespace
kubectl config view

CleanUp

kubectl delete namespace mynamespace --now