Update state-persistence.md

Author: bbachi

state-persistence.md

@@ -7,13 +7,183 @@
 
 ## Questions
 
-### TBD
 
-<details><summary></summary>
-  <p>
+<details><summary>List Persistent Volumes in the cluster</summary>
+<p>
 
-   ```
+```
+kubectl get pv
+```
+</p>
+</details>
+
+
+<details><summary>Create a hostPath PersistentVolume named task-pv-volume with storage 10Gi, access modes ReadWriteOnce, storageClassName manual, and volume at /mnt/data and verify</summary>
+<p>
+   
+```
+// task-pv-volume.yaml
+
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: task-pv-volume
+  labels:
+    type: local
+spec:
+  storageClassName: manual
+  capacity:
+    storage: 10Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: "/mnt/data"
+    
+kubectl create -f task-pv-volume.yaml
+
+kubectl get pv
+```
+</p>
+</details>
+
+
+
+<details><summary>Create a PersistentVolumeClaim of at least 3Gi storage and access mode ReadWriteOnce and verify status is Bound</summary>
+<p>
+   
+```
+// task-pv-claim.yaml
+
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: task-pv-claim
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 3Gi
+      
+kubectl create -f task-pv-claim.yaml
+
+kubectl get pvc
+```
+</p>
+</details>
+
+
+<details><summary>Delete persistent volume and PersistentVolumeClaim we just created</summary>
+<p>
+   
+```
+kubectl delete pvc task-pv-claim
+kubectl delete pv task-pv-volume
+```
+</p>
+</details>
+
+
+<details><summary>Create a Pod with an image Redis and configure a volume that lasts for the lifetime of the Pod</summary>
+<p>
+   
+```
+// emptyDir is the volume that lasts for the life of the pod
+
+apiVersion: v1
+kind: Pod
+metadata:
+  name: redis
+spec:
+  containers:
+  - name: redis
+    image: redis
+    volumeMounts:
+    - name: redis-storage
+      mountPath: /data/redis
+  volumes:
+  - name: redis-storage
+    emptyDir: {}
+    
+kubectl create -f redis-storage.yaml
+```
+</p>
+</details>
+
+
+<details><summary>Exec into the above pod and create a file named file.txt with the text ‘This is called the file’ in the path /data/redis and open another tab and exec again with the same pod and verifies file exist in the same path.</summary>
+<p>
 
-   ```
-   </p>
-   </details>
+```
+// first terminal
+kubectl exec -it redis-storage /bin/sh
+cd /data/redis
+echo 'This is called the file' > file.txt
+
+//open another tab
+kubectl exec -it redis-storage /bin/sh
+cat /data/redis/file.txt
+```
+</p>
+</details>
+
+
+<details><summary>Delete the above pod and create again from the same yaml file and verifies there is no file.txt in the path /data/redis.</summary>
+<p>
+   
+```
+kubectl delete pod redis
+
+kubectl create -f redis-storage.yaml
+kubectl exec -it redis-storage /bin/sh
+cat /data/redis/file.txt // file doesn't exist
+```
+</p>
+</details>
+
+
+<details><summary>Create PersistentVolume named task-pv-volume with storage 10Gi, access modes ReadWriteOnce, storageClassName manual, and volume at /mnt/data and Create a PersistentVolumeClaim of at least 3Gi storage and access mode ReadWriteOnce and verify status is Bound</summary>
+<p>
+   
+```
+kubectl create -f task-pv-volume.yaml
+kubectl create -f task-pv-claim.yaml
+
+kubectl get pv
+kubectl get pvc
+```
+</p>
+</details>
+
+
+<details><summary> Create an nginx pod with containerPort 80 and with a PersistentVolumeClaim task-pv-claim and has a mouth path "/usr/share/nginx/html"</summary>
+<p>
+   
+```
+// task-pv-pod.yaml
+
+apiVersion: v1
+kind: Pod
+metadata:
+  name: task-pv-pod
+spec:
+  volumes:
+    - name: task-pv-storage
+      persistentVolumeClaim:
+        claimName: task-pv-claim
+  containers:
+    - name: task-pv-container
+      image: nginx
+      ports:
+        - containerPort: 80
+          name: "http-server"
+      volumeMounts:
+        - mountPath: "/usr/share/nginx/html"
+          name: task-pv-storage
+          
+kubectl create -f task-pv-pod.yaml
+```
+</p>
+</details>
+