What steps need to be followed if one of the HA device is out of order ?
Hi Experts ,
In production environment if one of the F5 device from HA pair goes out of order ( does not power on due to hardware issue ) , What steps we need to follow while replacing that device with new RMA device . ?
1.In this scenario how do we start building our new RMA device ?
2.How do we configure HA - Should we need to disable anything on Active device ?
First one is that you don't have a backup UCS from the defective device and don't have the master key of it and in this scenario you have to do the below:
- power on the new RMA device, License it and configure initial configuration like MGMT IP, VLANs , Self IPs , NTP , DNS and HA configurations like the defective device was configured to make it as an HA peer to the active device.
- Then you can sync the configurations from the active device.
Second one is that you have a backup UCS from the defective device and also the master key and in this scenario you have to do the below:
- power on the new RMA device, License it and rekey RMA unit with the master ke and then restore UCS backup using no-license option.
- then sync the configurations.
_ for test, failover between the active device and RMA Device to be sure that traffic is working on the new RMA device.
_ in all scenarios, make sure that the new device is to be offline till you will be ready to make it as online to test traffic on.
+ to get Master key >>>>> use this command : f5mku -K
+ to rekey the new device >>> f5mku -r <key_value>