Question

A platform engineer runs 'helm uninstall myapp' to remove a release from the cluster. Later they attempt 'helm rollback myapp 2' to restore a previous good revision, but Helm reports that the release is not found. What is the most likely reason?

Accepted Answer

By default 'helm uninstall' purges the release history, so no revisions remain to roll back to unless '--keep-history' was used.

Answer

Rollback only works on releases that are currently in a 'failed' state, not on ones that were uninstalled.

Answer

The release history is stored in the local Helm cache, which was cleared when the CLI was restarted.

Answer

Rollback requires the original chart tarball to still be present in the working directory.