code.md

Static claims

In this module we are going to look at creating a stateful set in Kubernetes.
Stateful sets in Kubernetes attach a cloud disk to a pod. In this case we are using Azure disk.

Azure ships with two disk types for stateful sets out of the box. You can see these by issuing the command
kubectl get sc

The next thing we need to do is create a pvc (persistent volume claim)

Creating a static claim

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: aks-volume-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
EOF

Once the pvc is created we can bind a pod to use it
Below we are going to mount a volume to the pod /usr/share/nginx/html

Using the claim

cat <<EOF | kubectl apply -f -
kind: Pod
apiVersion: v1
metadata:
  name: nginx-pvc
spec:
  volumes:
    - name: nginx-storage
      persistentVolumeClaim:
       claimName: aks-volume-claim
  containers:
    - name: task-pv-container
      image: nginx
      ports:
        - containerPort: 80
          name: "http-server"
      volumeMounts:
        - mountPath: "/usr/share/nginx/html"
          name: nginx-storage
EOF

Now we move onto the next module here