Forum Discussion
mimlo_61970
Cumulonimbus
The word from support is that it is recommended to Force Offline the standby unit while you upgrade it. When you are ready to upgrade the primary, Force Offline the primary and Release Offline on the standby. The reason stated is that HA Active/Standby will not work properly on two different versions.
I have to say this has happened to me only once through probably 100s of upgrades using network failover all the way back to version 9.4
shaggy
Dec 15, 2014Nimbostratus
i've had the same experience. very rarely (knock on wood) through >100 upgrades have i experienced unexpected failovers. i have, however, had unexpected failovers caused by something in my config, such as unexpected behavior from HA groups/vlan failsafe/bad failover addresses. force-offline is nice, but prevents me from seeing that everything came up successfully post-upgrade