Im currently doing some research regarding the possibilities of upgrading from CCM Version 4.x to 8.x, and can find no information regarding a suitable data migration assistant to get from version 4.x to an 8.x installation.
Theres plenty of documents relating to DMA 7.x but nothing for version 8 yet.
Has a suitable version been released yet? Or is it necessary to use version 7 as a stepping stone?
The compatibility matrix lists nothing for version 8 DMA (again only 7) and the only documentation I can find is under the "Cisco Unified Communications Manager Documentation for release 8.0(2c)" in which it lists information for DMA version 7.1.2
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.