What is the least disruptive process of changing the DNS domain of the UCS fabric interconnect management interfaces in a prod environment? Can this be done of the fly? Is it as simple as changing the domain name is the UCS Mgr GUI? Will the fabric interconnects reboot?
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Slightly different but it'll hopefully help you: I changed the management IP addresses, leaving the DNS domain name identical, the other day, on one of my UCS domains. There was no outage - the FIs didn't reboot but I did get kicked out of UCSM and had to log in again of course.
I had to resort to using the console port to do the work as my network admin had already change the management port config.
Thanks Richard & Padma. I was able to change the domain name from the UCSM and then regenerated the certs from the cmd line. No reboots necessary. Thanks for your help!