To check whether the Linux VDA is installed and to view the version of the package installed:
rpm -q XenDesktopVDA
To view more detailed information:
rpm –qi XenDesktopVDA
Uninstalling the Linux VDA software will delete the associated PostgreSQL and other configuration data. However, the PostgreSQL package and other dependent packages that were setup prior to the installation of the Linux VDA will not be removed.
This article does not cover the removal of dependent packages including PostgreSQL.