Assuming the Puppet agent run happens at 12:05 am, what is expected with the defined resource during this time?

During the Puppet agent run at 12:05 am, the defined resource pertaining to the yum update would not be executed because Puppet operates based on the specifics given in its manifests or the scheduled daemon run cycle. If the system is configured to run updates, such as a yum update, the defined resource must meet certain criteria—like being enabled and set to run during the specified frequency defined in the manifest or through configuration settings.

In contexts where resources are not set to run on every agent run or there are conditions that prevent their execution (such as an active maintenance window where updates are disabled), the yum update will indeed not take action. This aligns with the Puppet model, where resources are idempotent and will not execute if they have already reached the desired state or if conditions are not met for execution at that time. The execution of yum updates is subject to the defined policy of how often and under what conditions they are allowed to operate.

Thus, if the defined resource is not triggered during this particular Puppet agent run at 12:05 am due to configuration or contextual restrictions, it confirms that the yum update will not be executed.