Andy Brownsword gets replicating:
Failover Groups for Managed Instances are a great option to replicate data, but they don’t replicate key instance elements – one of which is logins that live in the
masterdatabase. If left unchecked, failovers leave systems unable to connect and panic ensues.To alleviate this we’ll look at a script to synchronise logins and permissions across replicas.
Click through for a link to the script and an explanation of what’s going on with it.