The Apache 2 ITK MPM apache2-mpm-itk (just mpm-itk for short) is an MPM (Multi-Processing Module) for the Apache web server. mpm-itk allows you to run each of your vhost under a separate uid and gid—in short, the scripts and configuration files for one vhost no longer have to be readable for all the other vhosts. mpm-itk is based on the traditional prefork MPM, which means it's non-threaded; in sh