Maintenance on production postgres servers
This is something we should track but we may not need to take action on it since it will occur after the failover:
https://portal.azure.com/#blade/Microsoft_Azure_Health/AzureHealthBrowseBlade
Azure Service Health provides you with the current status of each VM that requires maintenance and allows you to initiate the maintenance proactively – any time between now and August 13, 2018 (00:00 UTC). If self-service maintenance has not been completed by then, Azure will automatically initiate maintenance on any VM that still requires it, sometime between August 13, 2018 (00:00 UTC) to August 20, 2018 (00:00 UTC). This scheduled maintenance will be performed one update domain at a time, to limit impact to environments configured for high availability.
/cc @dawsmith