VolumeClaimTemplates with subPath
5/18/2018
In a Kubernetes cluster, I need to have a StatefulSet bound to a volume (volume 0 in the picture) and for each replica, it should claim on a subPath folder (replica1 on folder node0, replica 2 on folder node1, ...).
I could not do such a thing. Any suggestion?
I thought it was possible to instruct the statefulset to use a subPath. Like this example:
[statefulset.yml]
...
volumeClaimTemplates:
- metadata:
name: my-claim
spec:
resources:
requests:
storage: 1Gi
accessModes:
- ReadWriteMany
storageClassName: volume-0
subPath: nodeDid someone have such a use case?
-- Nicola Ben
kubernetes
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1 Answer
6/27/2018
You should use subPath in the VolumeMounts clause.
For example:
apiVersion: v1
kind: Pod
metadata:
name: my-lamp-site
spec:
containers:
- name: apachephp
image: php:7.0-apache
volumeMounts:
- mountPath: /var/www/html
name: apachephp-data
subPath: html
- mountPath: /var/www/upload
name: apachephp-data
subPath: upload
volumes:
- name: apachephp-data
persistentVolumeClaim:
claimName: apachephp-claim-dataThe volumeMounts.subPath property can be used to specify a sub-path inside the referenced volume instead of its root. To be clear, I suggest to use subPath clause to sharing one volume for multiple Pods, or even for multiple uses inside a single Pods .
-- freedev
Source: StackOverflow