The following is my kubernetes/openshift deployment configuration template, along with its persistent volumes and persistent volume claims:
apiVersion: v1
kind: DeploymentConfig
metadata:
name: pythonApp
creationTimestamp: null
annotations:
openshift.io/image.insecureRepository: "true"
spec:
replicas: 1
strategy:
type: Recreate
revisionHistoryLimit: 2
template:
metadata:
labels:
app: pythonApp
creationTimestamp: null
spec:
hostAliases:
- ip: "127.0.0.1"
hostnames:
- "backend"
containers:
- name: backend
imagePullPolicy: IfNotPresent
image: <img-name>
command: ["sh", "-c"]
args: ['python manage.py runserver']
resources: {}
volumeMounts:
- mountPath: /pythonApp/configs
name: configs
restartPolicy: Always
volumes:
- name: configs
persistentVolumeClaim:
claimName: "configs-volume"
status: {}
---------------------------------------------------------------
apiVersion: v1
kind: PersistentVolume
metadata:
name: "configs-volume"
storageClassName: manual
capacity:
storage: 1Gi
persistentVolumeReclaimPolicy: Retain
accessModes:
- ReadWriteMany
nfs:
path: /mnt/k8sMount/configs
server: <server-ip>
---------------------------------------------------------------
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: "configs-volume-claim"
creationTimestamp: null
spec:
storageClassName: manual
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
volumeName: "configs-volume"
After the deployment, when I exec inside the container (using oc exec or kubectl exec) and check the /pythonApp/configs folder, it is found to be empty, when really it's supposed to have some configuration files from the used image.
Is this issue caused due to the fact that /pythonApp/configs is mounted to the persistent nfs volume mount path /mnt/k8sMount/configs, which will be initially empty?
How could this be solved?
Environment
- Kubernetes version:
1.11 - Openshift version:
3.11
