Barracuda Networks NG FIREWALL 5.0.3 - Manual (Page 17)

17 Release and Migration Notes - Updating HA-Synced Units or HA-Synced NG Control Centers
Proceed after having assured that the HA unit is fully functional.
• Unblock the (standby) servers on the HA unit by clicking Stop Server within
Control > Servers .
• Log-in to the primary unit using Barracuda NG Admin.
• Switch all servers from the primary to the HA unit and verify for correct
operability. Therefore,
Block all Servers on the primary unit.
You may leave the primary unit in standby mode until correct operability of the HA unit has been
verified. Click
Stop Server
on the primary unit in order to achieve this. If functional errors occur on the HA
unit, you may switch servers back to the primary unit.
Step 4: Update the Primary Unit
• Update the primary unit using SSH as delineated above in Updating Units or NG
Control Centers Using SSH, page 15 .
No more interaction with the primary unit is necessary. Wait until the update is finished. Depending on
the hardware, it will need from 15 minutes on the fastest appliances up to 60 minutes on the flash
appliances.
Step 5: Switch Servers Back to the Primary Unit
• Log-in to the respective primary unit using Barracuda NG Admin.
Proceed after having assured that the primary unit is fully functional.
• Re-enable all servers on the primary unit by clicking Stop Server (Control > Server)
on each.
• Log-in to the HA unit using Barracuda NG Admin.
• Block all the servers on the HA unit by clicking Block Server (Control > Server) .
Proceed after having assured that the primary unit is fully functional.
• Set all the servers on the HA unit back to standby by clicking Stop Server
(Control > Server) .
The update process is finished.
Do not interrupt the update procedure. During update, the unit boots several times and due to this, the connection will
be terminated. Indicators that the update process has been finished are the following output on the console:
Barracuda NG Firewall release 5.0.3-xxx, or the operativeness of logging in again using SSH or Barracuda
NG Admin.