mlocate file takes over hard drive (Ubuntu)

First off, let me say I know just enough to be dangerous. I'm running a relatively freshly installed version of Ubuntu on a VM (on a HP 17 Envy, VMWare). I've currently provisioned it with 128GB of hard drive and 2GB of RAM, running on a single core of an [email protected]. I'm running 16.04.2 Ubuntu on it. The only software I have installed on it of note is Plex and [MineCraft Server Manager](http://msmhq.com/). I leave the machine running of course and over about a day or two, the mlocate.db file 'takes over' the hard drive, running away and growing to about 115GB of the hard drive. I can manually reset the system, and it shrinks back down to a 'normal' size. I've added a nightly reset into the cron, but that appears to have stopped working as well. Whenever the hard drive fills up, both plex and msm cease functioning correctly (as is somewhat expected). Most of the support for this issue seems to be for much earlier versions of Ubuntu. I've installed the same .iso on another VM for running Zoneminder and it doesn't have the memory issue. I'd appreciate any direction as far as pointing me to where I can find relevant logs to help with resolving this.