8. State Presistence

Question 1

How define a Volumes in a yaml file

Answer 1

apiVersion: v1
kind: Pod
metadata: 
  name: random-number-generator
spec:
  containers:
  - image: alpine
    name: alpine
    command: ["/bin/sh" , "-c"]
    args: ["shuf -i 0-100 -n 1 >> /opt/number.out;"]
    volumeMounts:
    - mountPath: /opt
      name: data-volume

    volumes:
    -name: data-volume
     hostPath: 
       path: /data
       type: Directory 

Question 2

Persistent Volumes values

Answer 2

• ReadOnlyMany
• ReadWriteOnce
• ReadWriteMany

Question 3

Persistant volume definition

pv-definiton.yaml

Answer 3

apiVersion: v1
kind: PersistentVolume
metadata: 
  name: pv-vl1
spec:
  accessModes:
    - ReadWriteOnce
  capacity:
    storage: 1Gi
  hostPath:
    path: /tmp/data

Question 4

Create a persistant volume

Answer 4

kubectl create -f pv-definition.yaml

Question 5

Get the persistent volume

Answer 5

kubectl get persistentvolume

kubectl get pv