anchor.diff:  
       kubectl apply -f ./templates/pod-secret-volume.yaml
   
  -Open a shell to the pod to see the secrets
  +Open a shell to the pod to see the secrets:
   
       kubectl exec -it pod-secret-volume /bin/bash
       ls /etc/foo
  
positive.code: 
  === Define environment variables using ConfigMap data
  
  == Secrets
  
  In this section we will demonstrate how to place secrets into the Kubernetes cluster and then show multiple ways of retrieving those secretes from within pods.
  
  === Create secrets
  
  
negative.code:     echo -n "admin" | base64
      echo -n "password" | base64
  
  Both of these values are already written in the file `./templates/secret.yaml`. The configuration looks like:
  
  ```
  apiVersion: v1
  kind: Secret
  metadata:
    name: mysecret
  type: Opaque
  data:
    username: YWRtaW4=
    password: cGFzc3dvcmQ=
  ```
  
  You can now insert this secret in the Kubernetes cluster with the following command:
  
      kubectl apply -f ./templates/secret.yaml
  
  