Merge pull request ContainerSolutions#26 from ContainerSolutions/pvc

Example for PersistenVolumeClaim added. Closes ContainerSolutions#18

PersistentVolume/spec.local/local.yaml

@@ -4,14 +4,16 @@ 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
   nodeAffinity:
@@ -21,4 +23,4 @@ spec:
             - key: kubernetes.io/hostname
               operator: In
               values:
-                - example-node
+                - docker-desktop

PersistentVolumeClaim/README.md

@@ -0,0 +1,23 @@
+See: https://kubernetes.io/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims
+
+You can test a local `PersistentVolume` and a `PersistentVolumeClaim` with the following files. (this example 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 ./PersistentVolumeClaim/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 volume-pvc :80`
+
+
+Clean up
+```
+kubectl delete -f ./Pod/spec.volumes.persistentVolumeClaim/pod-pvc.yaml
+kubectl delete -f ./PersistentVolumeClaim/pvc.yaml
+kubectl delete -f ./PersistentVolume/spec.local/local.yaml
+```

PersistentVolumeClaim/pvc.yaml

@@ -0,0 +1,15 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: persitent-volume-claim
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi
+  selector:
+    matchLabels:
+      pv: local
+  storageClassName: hostpath

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

@@ -0,0 +1,16 @@
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: volume-pvc
+spec:
+  containers:
+    - name: frontend
+      image: nginx
+      volumeMounts:
+        - mountPath: /usr/share/nginx/html
+          name: volume-pvc
+  volumes:
+    - name: volume-pvc
+      persistentVolumeClaim:
+        claimName: persitent-volume-claim