The SolrBackup CRD has the option to specify collections for backups. However, it's not a required field. One could imagine that without specifying this field, every collection should be backed up.

On version 0.6.0 when the collection field is not configured, nothing happens within the controller, only this is being logged.

2023-01-12T12:10:37.412Z	INFO	controller-runtime.manager.controller.solrbackup	Updating status for solr-backup	{"reconciler group": "solr.apache.org", "reconciler kind": "SolrBackup", "name": "test-whole-backup", "namespace": "one-preprod", "newStatus": {"solrVersion":"8.11.2","startTimestamp":"2023-01-12T12:10:37Z"}, "oldStatus": {"startTimestamp":null}}

Solr doesn't receive any API calls.