Although CUE is online, it is in some mode that going offline is not possible. When command 'offline' is typed upon the enabled prompt (prompt is se-10-1-130-100#) the message from CUE is: "*** The System must be ONLINE before you can go offline ***".
If someone else has seen this issue, please let me know.
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.