MuninMX is a collector and frontend replacement for the Open Source Munin Monitoring Tool and is compatible with deployed munin-nodes which it also uses. MuninMX supports more then 5000 nodes on commodity hardware utilizing TokuMX as metric storage.
This is Munin on steroids, see some feature videos here:
https://www.muninmx.com/videos
The installer actually contains only the files required for manual install, see https://www.muninmx.com/docs/admin/installation for a step by step tutorial on how to use it.
The recommended way is to setup a minimalistic CentOS 6.x 64bit machine and then run:
wget https://www.muninmx.com/install-centos6.sh; chmod +x install-centos6.sh; ./install-centos6.sh