📌 What are Persistent Volumes in k8s

In Kubernetes, a Persistent Volume (PV) is a piece of storage in the cluster that has been provisioned by an administrator. A Persistent Volume Claim (PVC) is a request for storage by a user. The PVC references the PV, and the PV is bound to a specific node.

📌 Task-1 Create a Persistent Volume using a file on your node

Create a Persistent Volume Claim that references the Persistent Volume.

apiVersion: v1
kind: PersistentVolume
metadata:
  name: mypv
  namespace: todo
spec:
  capacity:
    storage: 2Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  hostPath:
    path: "/home/ubuntu/pvvolume"

Add the persistent volume claim

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mypvc
  namespace: todo
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi

📌 Update your deployment.yml file to include the Persistent Volume Claim.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: todo-deployment
  namespace: todo
  labels:
    app: todo-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: todo-app
  template:
    metadata:
      labels:
        app: todo-app
    spec:
      containers:
      - name: todo-app
        image: trainwithshubham/django-todo:latest
        ports:
        - containerPort: 8000
        volumeMounts:
          - name: pvcdata
            mountPath: /test
      volumes:
        - name: pvcdata
          persistentVolumeClaim:
            claimName: mypvc

📌 After Applying pv.yml pvc.yml your deployment file look like this Template Apply the updated deployment using the command: kubectl apply -f deployment.yml

📌 Verify that the Persistent Volume has been added to your Deployment by checking the status of the Pods and Persistent Volumes in your cluster.

Use this command kubectl get pods ,

📌 Task -2 Accessing data in the Persistent Volume, Connect to a Pod in your Deployment using command : `kubectl exec -it -- /bin/bash

Thank You