As a result of the planning stage of the OpenStack update, a detailed maintenance plan is created.
The maintenance plan must include the following parts:
A strict step-by-step update procedure
A rollback plan
A maintenance window schedule for each update phase
Note
The update flow is thoroughly selected by engineers in correspondence with the workload and requirements of a particular cloud.
After the maintenance plan is successfully tested on a staging environment, you can proceed with the actual update in production.