In postConfigure, you should be able to provide a preconfigured Columnstore.xml file and pass it via the command line with the upgrade option.
But there is a BUG where -c its working.
/usr/local/mariadb/columnstore/bin/postConfigure -u -c /root/Columnstore.xml.david
This is the MariaDB ColumnStore System Configuration and Installation tool.
It will Configure the MariaDB ColumnStore System and will perform a Package
Installation of all of the Servers within the System that is being configured.
IMPORTANT: This tool should only be run on the Parent OAM Module
which is a Performance Module, preferred Module #1
With the no-Prompting Option being specified, you will be required to have the following:
1. Root user ssh keys setup between all nodes in the system or
use the password command line option.
2. A Configure File to use to retrieve configure data, default to Columnstore.xml.rpmsave
or use the '-c' option to point to a configuration file.
Old Config File not found '/usr/local/mariadb/columnstore/etc/Columnstore.xml.rpmsave', exiting