on the VCS GUI navigate to Maintenance > Diagnostics > System snapshot and then click on the "Create full snapshot", then it takes a while for VCS to create the file for you and you will be provided a button to download the file.
after downloading it to your PC and unzipping it, you can navigate to this folder to find the message.x files (which as explained earlier for eventlog files).
if you want a link in GUI to download the event log as I understood, please open a TAC case for a new feature enhancement request.
of course system snapshot has all the logs. in case you want to go down via cli/winscp method to /mnt/harddisk/log and get the event logs from there, the log files to get from there are messages.x where x is a number. These logs are rotating logs and overwritten overtime. Preferably, you can setup a back log server and integrated to VCS (by this method you can increase the verbosity of the log level to 3 or 4 and not affraid of the log files getting overwritten soon than later).
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.