Forum Discussion
Emo_Gokay_22518
May 11, 2017Historic F5 Account
It is expected to lose the HA setup after changing the management IP on a device that is part of HA. More importantly how was the management IP changed, I would do it in the following order: I hope this helps.
Reassign new mgmt. IP or change mgmt. IP to F5 that is in HA pair or environment
- Create UCS file and download them to your PC from both units
- Put the F5 in question in standby mode
- Force it offline and KEEP it OFFLINE till you finish this process
- Break the HA between those Units by resetting the trust on both units (they will read “standalone”)
- Make sure that unit in question is and stays in “OFFLINE” state
- Re-assign the new mgmt. IP and make sure you have access to it with the new IP
- Make sure that unit in question is still and stays in “OFFLINE” state
- Rebuild the HA with the new mgmt. IP from the active unit
- Add the units/hostnames in the sync-failover group
- Sync the units from the active “self” and check the “override config” check box
- if successful they should be in sync
- test the sync feature by creating a test http monitor on the active and sync it over
- if that replicates it on the offline F5 it is working and you can delete the test monitor and sync
- now you can release the unit in question from “OFFLINE” state
- if you need to re-assign new IP on the active unit as well, perform failover so the initial active becomes standby and repeat the process above starting from step 3