Careful consideration should be made when authoring runbooks. As mentioned earlier, runbooks need to be authored in a way that they're robust and can handle transient errors that may cause the runbook to restart or fail. If a runbook fails, it is retried. If a runbook normally runs within a time constraint, logic to check the execution time should be implemented in the runbook to ensure operations like start up, shut down or scale out are run only during specific times.