CODEWITHSUNDEEP
kuberneteskubernetes-statefulset
user630702
user630702

Reputation: 3167

How to use a storage class for StateFulSet? Do I have to create a PVC?

How to use a storage class for statefulset? I've created the StorageClass. I also created PVC but i'm a bit confused if PVC needs to be create since PVC already requests storage and volumeClaimTemplates also requests storage. Eitherway its not working with or with out pvc.

I get the following error:

create Pod dbhost001-0 in StatefulSet dbhost001 failed error: failed to create PVC mysql-dev-dbhost001-0: PersistentVolumeClaim "mysql-dev-dbhost001-0" is invalid: spec.resources[storage]: Required value
create Claim mysql-dev-dbhost001-0 for Pod dbhost001-0 in StatefulSet dbhost001 failed error: PersistentVolumeClaim "mysql-dev-dbhost001-0" is invalid: spec.resources[storage]: Required value

storageClass.yml:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: ebs-sc
provisioner: kubernetes.io/aws-ebs
parameters:
  type: gp2
reclaimPolicy: Retain
allowVolumeExpansion: true
volumeBindingMode: WaitForFirstConsumer

Statefultset.yml:

apiVersion: apps/v1
kind: StatefulSet
....
....
  volumeClaimTemplates:
  - metadata:
      name: mysql-dev
    spec:
      accessModes:
        - ReadWriteOnce
      storageClassName: ebs-sc
      resources:
        requests:
          stroage: 2Gi

I'm not sure if pvc is needed? I was using this for a normal replicaset deployment. But not sure if Statefulset needs this.

PersistentVolumeClaim.yml:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-dev
  namespace: test-db-dev
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: ebs-sc
  resources:
    requests:
      storage: 2Gi

Upvotes: 3

Views: 5560

Answers (1)

user630702
user630702

Reputation: 3167

Figured it out.

First there was a typo in Statefultset.yml it should be storage instead of stroage.

Second there is no need for PersistentVolumeClaim since volumeClaimTemplates is the same thing which claims from storage class.

Upvotes: 3

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