FortiGate 3000 HA 切換 Master / Slave

7/7 更換 FortiGate 3000 power supply
原先以為只要更改HA Config裡的priority參數，就可以切換Master/Slave，
(FortiGate Priority數值越高，優先權越高）
後來發現FortiGate-01 & FortiGate-02在設定HA參數時，都是設定Set override disable，
造成不會切換Master / Slave。

於FortiGate 3000-01及Fortigate 3000-02中修改Set override enable，
此時更換Proirity數值，即會自動切換Master / Slave。

Forti3000-1 # show system ha
config system ha
set group-id 1
set mode a-p
set hbdev "internal" 25 "port1" 50
set arps 3
set session-pickup enable
set override disable
set priority 150
set monitor "external" "internal" "port1" "port4/ha"
end

Forti3000-1 # config system ha

Forti3000-1 (ha) # set override enable

切換至FortiGate 3000-02的方法

Forti3000-1 # execute ha manage
please input peer box index.
<0> Subsidary unit FG30002C05400127