This article describes how FortiADC HA A-P mode failover is being triggered.
Scope
FortiADC v6.x, and v7.x.
Solution
The HA master election process only gets triggered after any of the following:
Monitor port up/down.
Remote IP failure.
Reboot/reload.
Note 1:
Override and node priority are only considered at the beginning of the primary election and changing it would not trigger failover, but it will be considered the next election.
Note 2:
Priority is optional. The smaller the number, the higher the priority. The default is 5. The valid range is 0 to 9.
Note 3:
By default, unless enabling Override, uptime is more important than this setting. Override-Enable making Device Priority a more important factor than uptime when selecting the primary node.
