KMS(Khalil Monitoring System) is a WISP network monitor for users subscription and there CPEs(UBNT & Cambuim) It Developed using Go and based on SNMP for gathering data and SSH for configuration, You can see demo on https://youtu.be/vP6C3e3ayOY
You can get benifit from some of its code, like SNMP, SSH, MySQL and Ping codes