[TriLUG] Open source software to monitor hundreds of VMs

[Craig Cook via TriLUG]

>Looking for some suggestions on Open Source software to monitor hundreds of VMs and/or containers (99% Linux [Ubuntu/CentOS]).  Currently using Cacti, but it is very tedious to setup a new VM.  Would like to get the “typical” stats (CPU, RAM, HDD, Network, SWAP, etc).  GUI would be nice as well as an API to add new VMs and extract data.


For VM monitoring I recommend Check_mk RAW.  Configuring Nagios is *painful*.  Check_mk uses nagios as a backend and makes configuring it easy.  Includes integrated RRD graphs and other features.  Also has an API.
There are plugins available to send metrics to other engines, e.g. graphite and friends.
Craig