Kubernetes: Setup Namespaces and PODs

How to Create and Manage Kubernetes Namespaces and PODs

Tasks

• Create a namespace named dev.

• Deploy a pod named dev-nginx-pod in the dev namespace.

• Use the nginx image with the latest tag for the pod.

• Ensure to specify the image tag as nginx:latest.

Steps

1. First create the namespace named dev.

    kubectl create namespace dev

   
2. Manifest with yaml file:

    apiversion: v1
    kind: Namespace
    metadata:
      name: dev

   But I prefer using EOF

    cat <<EOF > namespace-dev.yaml
    apiVersion: v1
    kind: Namespace
    metadata:
      name: dev
    EOF

   
3. Create namespace now:

    kubectl create -f namespace-dev.yaml --save-config

   
4. Create pods now, nginx-pod.yaml

    apiVersion: v1
    kind: Pod
    metadata:
      name: dev-nginx-pod
      namespace: dev
    spec:
      containers:
      - name: nginx
        image: nginx:latest

   
5. Apply the YAML manifest file.

    kubectl apply -f nginx-pod.yaml

6. 

   Now List Namespaces

    kubectl get namespaces

   
7. List Pods in a Namespace

    kubectl get pods -n dev

   

   #k8s #kubernetes #pods #namespace #happylearning :)