Fast, easy way to disable automatic failover

Problem to solve

If we identify a problem with automatic failover, this can only be controlled through changing Praefect configs on each Praefect node. This means that it will be hard to respond quickly to a bug or production problem that this feature might cause.

Further details

Proposal

There are multiple ways to solve this:

• a command that can be run on any Praefect node that sets a flag in the database to disable automatic failover,
• an API/checkbox in the GitLab application that sends a signal to Praefect to disable automatic failover
  • this could even be a feature flag that Praefect is looking for

Links / references