Required FreePBX,SNMP freelancer for Freepbx monitoring script setup job

We manage 15 freepbx instances and growing. Need to monitor them efficiently. We want to use an open source monitoring program (like monit or similar). It will need to monitor and restart services on the monitored freepbx (FreePBX 13.0.195.1) servers. It will also need to alert if trunks are down/not reachable, sites have gone offline, etc. We run all pbx's in our cloud.

One solution is to use:
A. atera as our rmm platform and it has good snmp monitors. We need a script that will install and configure all snmp config.
B. Monit
C. others?

Open to other ideas too.

Skills & Expertise Required

FreePBX SNMP