...
volumes:
- name: local-vol
hostPath:
path: {{ .Values.persistentVolume.path }}
type: DirectoryOrCreate
Example:
| Code Block | ||
|---|---|---|
| ||
kind: Deployment
...
spec:
containers:
- name: registry
...
volumeMounts:
- mountPath: /var/lib/registry
name: local-vol
subPath: registry/data
volumes:
- name: local-vol
hostPath:
path: {{ .Values.persistentVolume.path }}
type: DirectoryOrCreate
... |
...
Make a Claim using Default Storage Class
| Code Block | ||
|---|---|---|
| ||
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: my-claim
spec:
storageClassName: ""
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 2Gi |
...
- Only one claim can be made against a volume.
- File path (local.path) must exist for the volume to be usable.
- USE HOSTPATH STORAGE since it will create the folders for you.
| Code Block | ||
|---|---|---|
| ||
apiVersion: v1
kind: PersistentVolume
metadata:
name: local-storage
spec:
capacity:
storage: 10Gi
# volumeMode field requires BlockVolume Alpha feature gate to be enabled.
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Persist
storageClassName: local-storage
local:
path: /var/k8s/LOCAL_STORAGE
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- k8sworker1
- k8sworker2
- k8sworker3
- docker-for-desktop |
...
Make a claim by specifying the storage class
| Code Block | ||
|---|---|---|
| ||
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: local-storage-claim
spec:
storageClassName: local-storage
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 3Gi |
...
We can create a storage class for our local-storage and use it as default storage. The only issue with doing this with local-storage is that we need to pre-build all of the persistent volumes. Since only 1 claim can be made against a volume, we will need to make a few.
| Code Block | ||
|---|---|---|
| ||
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: local-storage
annotations:
storageclass.kubernetes.io/is-default-class: "true"
provisioner: keystone/local-storage
volumeBindingMode: Immediate
reclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: local-storage-1
spec:
capacity:
storage: 2Gi
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
storageClassName: local-storage
local:
path: /var/pv1
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: NotIn
values:
- master
---
...REPEAT UNTIL HAPPY ... |
...
To use the default storage of the cluster, you just need to create a claim and specify "" for storageClassName.
| Code Block | ||
|---|---|---|
| ||
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: local-storage-claim
spec:
storageClassName: ""
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 3Gi |
...