Modify Backup Volumes for HA Situations

Overview

Add in an a boolean spec.ephemeralVolume. This will allow backup to a remote storage provider using a volume which is created/destroyed with the backup pod.

Backwards Compatability

The default of spec.ephemeralVolume will be false

Add

CouchbaseBackup.spec.ephemeralVolume

CouchbaseBackupRestore.spec.stagingVolume.size

CouchbaseBackupRestore.spec.stagingVolume.storageClass

DAC

if CouchbaseBackup.spec.ephemeralVolume is true and no cloud backup strategy is provided, the DAC will reject the request

Operator -> CronJob Changes

if spec.ephemeralVolume is true -> Create Ephemeral Volume on CronJobs PodSpec

Testing

• No changes to existing tests
• New test to ensure that PV does not exist after backup run with spec.ephemeralVolume == true
• use node selector to run backup on node, change node run backup. no fail?