Source renders:
recipes/bitnami/redis/25.5.3/revisions/default/r001/rendered/release-objects.yamlrecipes/bitnami/redis/27.0.0/revisions/default/r001/rendered/release-objects.yaml
The shape of the change
Both versions render the same 14 objects with the same identities: no object is added, removed, or renamed by this upgrade. The diff is 85 lines across those objects.
Three changes matter operationally:
- The
users.aclblock is gone from the configuration ConfigMap in 27.0.0. If you relied on it, the upgrade removes it silently. - The
checksum/configmappod annotations rotate. That is by design in the chart, and it means the upgrade restarts the pods even though your values did not change. Plan the upgrade window accordingly. - The chart and app version labels move, which is cosmetic.
Why this page exists
helm upgrade shows you none of this until apply time. Rendering both versions and diffing them shows all of it before you schedule the change. The day-2 upgrade guide shows the same comparison done through recorded revisions, where the diff also survives as a record.