Helm rollback to previous release

As it turns out, there is an undocumented option to rollback to the last successful release by defining the target release version as 0. like: helm rollback <RELEASE> 0

Source: https://github.com/helm/helm/issues/1796

Unlike the previous old answers above.

According to the latest documentation, you can rollback to the previous version by simply omitting the argument in helm rollback. Which means your command should like below to rollback to the previous version.

helm rollback <RELEASE_NAME>