add storage examples

CKA_Course/storage/persistent_volume.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: my-pv
+spec:
+  storageClassName: localdisk
+  persistentVolumeReclaimPolicy: Recycle
+  capacity:
+    storage: 1Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /var/output
+

CKA_Course/storage/persistent_volume_claim.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: my-pvc
+spec:
+  storageClassName: localdisk
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Mi
+

CKA_Course/storage/storage-consumer-pod.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: pv-pod
+spec:
+  containers:
+    - name: busybox
+      image: busybox
+      command: ['sh', '-c', 'echo Success! > /output/success.txt']
+      volumeMounts:
+        - name: pv-storage
+          mountPath: /output
+  volumes:
+    - name: pv-storage
+      persistentVolumeClaim:
+        claimName: my-pvc
+

CKA_Course/storage/storage_class.yaml

@@ -0,0 +1,7 @@
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: localdisk
+provisioner: kubernetes.io/no-provisioner
+allowVolumeExpansion: true
+