Error Scenarios

This section covers the following error scenarios:

Follower Upgrade Failure: If the upgrade of a follower site fails, it will end in a GSLB disruption. The site will roll back to the previous version and come up. On the GSLB leader, disable maintenance mode. After determining the reason for failure and addressing it, resume the upgrade process.
Leader Upgrade Failure: On the leader, disable maintenance mode. Determine the reason and address it. In the meantime, no new features can be turned on.