Maintenance Window Planner

"Rollback takes" is the fixed part of backing out, such as restoring snapshots and restarting the old services, including checking the rollback worked. Steps that need their own undo (switching DNS back, say) add their undo minutes from the moment they start, since a half-done step needs undoing too. "Plan around people" makes a step wait until the people it needs are free: each name under Who does one step at a time, and no more than the people available work at once. If the end is earlier than the start, the window runs past midnight. With a date and time zone, clock changes inside the window are counted.

"Waits for" takes step numbers or names, separated by commas (e.g. 2, 3). "With help" is how long the step would take with a second person. Each name under Who is one person (use Ops 1, Ops 2 for a team), and several names separated by commas means all of them. ⋯ opens the command to run, the check to expect, how many people a step needs (0 for one that's just waiting, like DNS spreading) and whether it can't be undone (dropping a table, say): once that starts, the only way out is forward. Your plan is kept in this browser only.

Go/no-go by: if a step isn't finished and checked by this time, roll back. After it, either the rest of the plan won't fit or the rollback won't. "5 min short" means the plan as written finishes that step 5 minutes after its go/no-go time, so that time has to be made up by then.

Starts, finishes, failed checks, changed times and every change in the live status are written here as they happen. Add decisions and anything else worth remembering. Like the plan, it's kept in this browser and goes with the saved plan file; anyone with this browser can change it.

Planned is the plan as it stood when live mode was started. A failed check counts as the step's finish.