I was Wonder if it is possible to upgrade CUCM 8.6 and Unity 8.6 at same time ( To 9.1.2 )
I Upgrade my CUCM PUB AND Unity PUB At SAME time.
So both process the upgrade file at same time.
I Reboot CUCM PUB Only ( from what I saw, we have to reboot Unity once the cluster is update.. not the case for CUCM )
And again at same time :
I Update CUCM SUB
I Update Unity SUB
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.