Example for PersistenVolumeClaim added

I had to modify a little the local PersitentVolume example so it works with this one and created a new Pod example that uses the pvc

PersistentVolume/README.md

@@ -2,3 +2,18 @@ Persistent volumes are not covered here as they require third party dependencies
 
 https://kubernetes.io/docs/concepts/storage/persistent-volumes/
 https://kubernetes.io/docs/concepts/storage/volume-snapshots/
+
+You can test a local `PersistentVolume` and a `PersistentVolumeClaim` with the following files. (this was tested on a docker-desktop kubernetes cluster)
+
+1 - Create a `PersistentVolume` on your host monted on a local directory (add an `index.html` file in that directory with a hello world message)  
+> `kubectl apply -f ./PersistentVolume/spec.local/local.yaml`
+
+2 - Create the `PersitentVolumeClaim`  
+> `kubectl apply -f ./PersistentVolume/pvc.yaml`
+
+3 - Spin up a `Pod` with nginx poiting where its default root directory points to your host's directory   
+> `kubectl apply -f ./Pod/spec.volumes.persistentVolumeClaim/pod-pvc.yaml`
+
+4 - Port forward your `Pod` and access it with your browser. You should be able to see the `index.html` file from your local directory.  
+> `kubectl port-forward mypod :80`
+

PersistentVolume/pvc.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: my-pvclaim
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi
+  selector:
+    matchLabels:
+      pv: local
+  storageClassName: hostpath

PersistentVolume/spec.local/local.yaml

@@ -4,21 +4,23 @@ apiVersion: v1
 kind: PersistentVolume
 metadata:
   name: volumes-local-persistent-volume
+  labels:
+    pv: local
 spec:
   capacity:
-    storage: 100Gi
+    storage: 5Gi
   volumeMode: Filesystem
   accessModes:
     - ReadWriteOnce
   persistentVolumeReclaimPolicy: Delete
-  storageClassName: local-storage
+  storageClassName: hostpath
   local:
-    path: /mnt/disks/ssd1
+    path: /Users/seba/dev/storage
   nodeAffinity:
     required:
       nodeSelectorTerms:
         - matchExpressions:
             - key: kubernetes.io/hostname
               operator: In
               values:
-                - example-node
+                - docker-desktop

Pod/spec.volumes.persistentVolumeClaim/pod-pvc.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: mypod
+spec:
+  containers:
+    - name: myfrontend
+      image: nginx
+      volumeMounts:
+      - mountPath: /usr/share/nginx/html
+        name: mypd
+  volumes:
+    - name: mypd
+      persistentVolumeClaim:
+        claimName: my-pvclaim