Technical Tip: Changing HA role in cluster

[sreddi]

Description

This article describes different methods to promote the role of subordinate to primary in a HA cluster.

It is recommended to read first the 'Primary unit selection' chapter from 'FortiOS Handbook: High Availability'.

Primary unit selection with override disabled (default)

Solution

1. Use the following command from CLI when the override is enabled:
   
   config system ha
       set priority 250 <change the priority on the Master unit to be lower than the secondary unit>
       set override enable
   end
   
   Or:
   
   
2. Reset the uptime of the master device when the override is disabled:
   
   

   config system ha
       set override disable
   end
   
   

   diag sys ha reset-uptime
   
   Or:
   
   

3. Disconnect the cable from the interface which is being monitored on the primary.