RocketChat or MatterMost on a DirectAdmin VPS?

Hello all,
I was wondering if anyone has tried to install either RocketChat or MatterMost on a DirectAdmin VPS running on CentOS..
This is for a small team (10-12 users)..
I’m kind of reticent about the resources either app would take..
I’m also reticent about installing MongoDB, because there seem to be lots of security issues with that DB system, and I have no experience with it..
What’s more, it seems like both RocketChat or MatterMost prefer not to be installed on CentOS..
Any guidance or experience would be greatly appreciated!!
Thank you all!
 
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