Which command should be executed to recover from a Puppet installation failure due to a configuration error?

To recover from a Puppet installation failure that stems from a configuration error, the most effective approach is to first resolve the configuration issue that caused the failure. After correcting the configuration error, executing the uninstaller will ensure that any corrupted or improperly configured components related to the Puppet installation are completely removed from the system.

This step is crucial because lingering misconfigurations could lead to persistent issues if simply restarting services or the server is attempted without first addressing the fundamental cause of the failure. The uninstallation process effectively resets the environment, allowing for a clean installation after the necessary fixes are in place. This method promotes a more stable and reliable deployment of Puppet in the subsequent setup.

Other options would not directly address the underlying configuration problem that led to the installation failure. For instance, attempting to run a reinstallation or starting services without fixing the configuration may result in the same errors occurring again.