const ( // DefaultVtDataRoot is the default value for VTROOT environment variable DefaultVtDataRoot = "/vt" )
VtDataRoot returns $VTDATAROOT or the default if $VTDATAROOT is not set. VtDataRoot does not check if the directory exists and is writable.
VtMysqlBaseDir returns the Mysql base directory, which contains the fill_help_tables.sql script for instance
VtMysqlRoot returns the root for the mysql distribution, which contains bin/mysql CLI for instance.
VtRoot returns $VTROOT or tries to guess its value if it's not set. This is the root for the 'vt' distribution, which contains bin/vttablet for instance.