Technical Tip: FortiNAC migration to HA paired servers can require reapplying HA config settings

After migration is completed, testing DB replication can be performed by first checking the slave status in CLI.

1. From CLI and execute enter-shell:

======================================
dc000vpfn01:/var/lib/mysql$ sudo hsIsSlaveActive
Host dc900vpfn01
SQL version 10.7.8-MariaDB,
slave is inactive <---indicates trouble with replication
======================================

2. Also, event logs in the admin UI will likely show db replication errors if that event is enabled.
3. Another clue would be the absence of the file  /bsc/.my-bsiadmin.cnf which gets created when the HA configuration is done.  This file should exist on both systems.
4.  Another clue is the database table files in the /var/lib/mysql/bsc/ directory will not be currently looking at time/date stamps.
   

If this is the case, reapply the HA configuration under System -> Settings -> System Management -> High Availability.