gomnik

A tool written in golang which reads data from certain Omnik solar inverters and exposes it as Prometheus metrics.

Usage

usage: gomnik --serial=SERIAL --address=ADDRESS [<flags>]

Flags:
      --help                    Show context-sensitive help (also try --help-long and --help-man).
  -s, --serial=SERIAL           Serial number of the inverter.
  -a, --address=ADDRESS         Address on which the inverter listens (example: 10.0.0.1:8899).
  -i, --interval=10             Number of seconds between queries of the inverter.
  -m, --metrics="0.0.0.0:9100"  Endpoint on which to serve Prometheus metrics.
      --version                 Show application version.

gomnik will open a TCP connection to the inverter whose address is specified by the parameter --address and request data every --interval seconds.

The parameter --serial must be set to the serial number of the inverter to be queried.

It serves Prometheus metrics on the HTTP endpoint specified in --metrics.

Tested with go1.12.7.

TODO

• Tidy the code.
• Write proper tests.

References

Based upon Omnik-Data-Logger by Wouter van der Zwan.