04-26-2012 12:24 PM - edited 02-21-2020 04:37 AM
I would like to know the proper procedure to upgrade ACS Primary/Secondary ACS deployment.
Do I have to upgrade the secondary first or can I upgrade the Primary and then de-register Secondary to upgrade.
thank you
04-26-2012 07:07 PM
Cisco publishes an Installation and Upgrade Guide which covers the process in step-by-step detail. Please reference it here.
TLDR version - upgrade secondary, make sure it registers to primary then upgrade primary
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