What is Patch Cut-off Date?
Patch cut-off date is a feature that allows you to set a time in the past, after which no patches will be applied to the system. This is useful for ensuring that the state of the system is deterministic and reproducible. It guarantees that no changes will be made after a certain date.
The use of patch cut-off date is recommended only for groups of systems that require a high level of uniformity, and synchronized updates. Delaying the application of high and critical security patches is not recommended.
Availability
This feature is available only for users with a paid Ubuntu Pro subscription connected to Canonical’s hosted Livepatch service. This feature is not available for self-hosted Livepatch servers.
What if I already have a patch applied?
If you already have a patch applied and its release date is after the cut-off date to fully remove the changes from your system, you will need to reboot the machine.
If you set a cut-off date and the release date of the patch is before the cut-off date, you are not required to take any action. The patch will remain applied.