How to Override Volume storageClass During Export
Purpose
Solution
The ExporterStorageClassName parameter can be used for namespaces that have PersistentVolumeClaims (PVCs) using a single storageClass, as well as in cases where multiple PVCs, using different storageClasses, are in the same namespace.
This is particularly helpful when the application's PVC is provisioned using a storageClass with the deletion policy set to 'Retain'. This setting ensures that there are no leftover PersistentVolumes (PVs) in the 'released' state after the temporary PVCs, created for exports, have been cleaned up.
The examples below show how to add these parameters by editing the Policy manually.
Single storageClass
apiVersion: config.kio.kasten.io/v1alpha1
kind: Policy
metadata:
name: postgresql-backup-1
namespace: kasten-io
spec:
actions:
- action: backup
- action: export
exportParameters:
exportData:
enabled: true
# Storage class to use for any temporary PVCs created
# during the snapshot conversion process. If not specified, the
# storage class of the source volume is used.
exporterStorageClassName: gp2-delete
frequency: '@hourly'
migrationToken:
name: postgresql-backup-1-migration-token-7vrgc
namespace: kasten-io
profile:
name: test-jai
namespace: kasten-io
receiveString: xxxxxxx
retention: {}
createdBy: kasten-io:k10-k10
frequency: '@hourly'
retention:
daily: 7
hourly: 24
monthly: 12
weekly: 4
yearly: 7
selector:
matchExpressions:
- key: k10.kasten.io/appNamespace
operator: In
values:
- postgresql
- kasten-io-cluster
Multiple storageClass
apiVersion: config.kio.kasten.io/v1alpha1
kind: Policy
metadata:
name: postgresql-backup-1
namespace: kasten-io
spec:
actions:
- action: backup
- action: export
exportParameters:
exportData:
enabled: true
overrides:
# Override setting of a specific storage class
- storageClassName: gp2-retain
enabled: true
exporterStorageClassName: gp2-delete
- storageClassName: gp3-retain
enabled: true
exporterStorageClassName: gp3-delete
# Setting to disable the export for a specific storageClass
- storageClassName: nfs-client
enabled: false
frequency: '@hourly'
migrationToken:
name: postgresql-backup-1-migration-token-7vrgc
namespace: kasten-io
profile:
name: test-jai
namespace: kasten-io
receiveString: xxxxxxx
retention: {}
createdBy: kasten-io:k10-k10
frequency: '@hourly'
retention:
daily: 7
hourly: 24
monthly: 12
weekly: 4
yearly: 7
selector:
matchExpressions:
- key: k10.kasten.io/appNamespace
operator: In
values:
- postgresql
- kasten-io-cluster
Note: It is also possible to disable the export of a specific storageClass as in the example below for NFS:
# Setting to disable the export for a specific storageClass - storageClassName: nfs-client enabled: false
More Information
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