velero/site/docs/v1.3.2/backup-reference.md

Backup Reference

Exclude Specific Items from Backup

It is possible to exclude individual items from being backed up, even if they match the resource/namespace/label selectors defined in the backup spec. To do this, label the item as follows:

kubectl label -n <ITEM_NAMESPACE> <RESOURCE>/<NAME> velero.io/exclude-from-backup=true