I recently began migrating my Drupal 6 installation from a shared server to a CentOS 5 virtual private server with 512mb of memory, running Apache and PHP5. cPanel/WHM is installed. Now that it's been fully transferred to the the VPS slice, it's constantly maxing out the memory, forcing reboots, and it's not even in production yet. I am the only user. It was not having any memory issues on the shared server.
I need the server settings optimized for Drupal to avoid reaching memory limits once the site is in production.
Work needed right away.