kubernetes tutorial | Kubernetes Volumes | Demo: create PV, PVC & Mount it a Pod using Local Storage

*CERTIFIED KUBERNETES ADMINISTRATOR*
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*Kubernetes Tutorial | DEMO Create PV PVC and Mount it in a Pod*
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In this video, you are going to see a DEMO on how to create PV, PVC and mount the same into the Pod.

For suggestions/feedback/doubts contact

Happy Learning !!!

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*USEFUL LINKS*
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*Overview of Volumes*

*Persistent Volumes*

* Kubectl Command Reference*

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#cka #kubernetes #k8s #container

*DEMO STEPS*
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*Step 1: Access & Inspect the Kubernetes Cluster*

$ kubectl cluster-info

$ kubectl get nodes

$ kubectl get pods -n kube-system


*Step 2: Create Persistent Volumes using Local Storage (Static Provisioning)*

*In Worker 1*

$ mkdir -p /pv/pv-1

*In Worker 2*

$ mkdir -p /pv/pv-2

*Create pv-1 & pv-2*

Sample PV manifest
===============================================
apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-1
spec:
accessModes:
- ReadWriteMany
capacity:
storage: 1Gi
persistentVolumeReclaimPolicy: Retain
volumeMode: Filesystem
local:
path: /pv/pv-1
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
operator: In
values:
================================================

*Step 3: Create Persistent Volumes Claims*

_Create pvc-1 & pvc-2_

Sample PVC Manifest
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apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-1
spec:
accessModes:
- ReadWriteMany
volumeMode: Filesystem
resources:
requests:
storage: 1Gi
=======================================

*Step 4: Create Pods and Mount the Persistent Volume Claims*

_Create Pod-1 and Pod-2 and mount the PVC's respectively_

Sample POD Manifest
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apiVersion: v1
kind: Pod
metadata:
labels:
app: apache
name: pod-1
spec:
volumes:
- name: myvolume-1
persistentVolumeClaim:
claimName: pvc-1
containers:
- image: httpd
name: apache
volumeMounts:
- name: myvolume-1
mountPath: /usr/local/apache2/htdocs/
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*Step 5: Create some data within the Pod and check the data persistence*

Create some data under the mountpath folder

$ kubectl exec -it pod-1 -- sh

*Step 6: Delete Pod-2 and Create Pod-3 with Pod 2’s PVC claim*

$ kubectl delete pod pod-2

Now create pod-3 with pod-2's pvc claim and validate the data in pod-3

_THE END_

[puru]

Thank you for the detailed explanations

[balakrishnag]

Hi, for local storage we want use only rwo only know, but your used RWX, Multiple pod can use pv1 or pv2

[joeharyar]

Hi..great tutorial... (1)U r using localpath right...(2)can we have single pv and multiple pvc...meaning multiple pods will using the same pv i.e., pv1=5G pvc1.1=1G pvc1.2=2G pvc1.3=2G (3)does it fit for pod replicas >1?