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Tom_112729's avatar
Tom_112729
Icon for Nimbostratus rankNimbostratus
May 08, 2014

Replace one LTM unit with another one in HA-pair without service disruptive

Hello!   I would like to make sure how to replace failed unit with the new one in HA cluster ( 2x LTM) without service disruptive. Accourding to this document http://support.f5.com/kb/en-us/solut...
application delivery
availability
LTM
management
nathe's avatar
nathe
Icon for Cirrocumulus rankCirrocumulus
May 08, 2014

Hmmm...now I didn't think you had to reset device trust. I'm trying to recall when I last had to do this (was a while back now).

 

I'm sure this is what I did: power on replacement unit, logon to the bigip via a console connection and do the config bit. Then connected the mgmt interface to logon and do the base config, i.e. license, provisioning. I then restored the failed box's UCS file (with the no-license flag). Once UCS file restored and the config looks good then re-attach all the network cables/ serial failover if using hardware failover too. I then did a configsync from the active to this new standby appliance and all was good.

 

Of course resetting device trust is the next option if you get any sync failures once you're restored the ucs file.

 

Happy to be corrected on this but I'm sure I didn't need to reset the trust.

 

Hope this helps,

 

N