I have a 3-node Kubernetes cluster running on vagrant using the oracle Kubernetes vagrant boxes from http://github.com/oracle/vagrant-boxes.git.
I want to add a pod including an Oracle database and persist the data so that in case all nodes go down, I don't lose my data.
According to how I read the Kubernetes documentation persistent volumes cannot be created on a local filesystem only on a cloud-backed device. I want to configure the persistent volume and persistent volume claim on my vagrant boxes as a proof of concept and training exercise for my Kubernetes learning.
Are there any examples of how I might go about creating the PV and PVC in this configuration?
As a complete Kubernetes newbie, any code samples would be greatly appreciated.
Use host path:
create PV:
kind: PersistentVolume
apiVersion: v1
metadata:
name: task-pv-volume
labels:
type: local
spec:
storageClassName: manual
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/datacreate PVC:
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: task-pv-claim
spec:
storageClassName: manual
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 3GiUse it in a pod:
kind: Pod
apiVersion: v1
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-storageThis is just an example, for testing only.
For production use case, you will need dynamic provisioning using the StorageClass for PVC, so that the volume/data is available when the pod moves across the cluster.