OhmGraphite

OhmGraphite

OhmGraphite takes the hard work of extracting hardware sensors from Open Hardware Monitor (technically LibreHardwareMonitor for most up to date hardware) and exports the data in a graphite (or InfluxdDB) compatible format. If you're missing any of the following in Grafana or (other time series UI), this tool is for you!

• Breakdown of GPU utilization
• Fan speed
• Temperature for hard drives, CPU cores, GPU, Motherboard
• Voltage readings

Who's this for?

• People who are familiar with Graphite / InfluxDB / Grafana and may have an instance running on their home or cloud server. If you're not familiar with those applications, it may be overwhelming to setup and maintain them. If you're just looking for a UI for hardware sensors, I'd recommend HWINFO
• People who have administrative privileges
• People who know how to execute commands on Windows Command Prompt or other terminal
• People who like lightweight (8MB of RAM and neglible CPU usage), portable (can run off usb), and straightforward applications

Introduction

OhmGraphite functions as a console app (cross platform) or a Windows service that periodically polls the hardware. My recommendation is that even though OhmGraphite can be run via Mono / Docker, many hardware sensors aren't available in those modes.

I use this every day to create beautiful dashboards. Keep in mind, Open Hardware Monitor supported components will determine what metrics are available. Below are graphs / stats made with OhmGraphite (couple of the panels are complemented with telegraf as demonstrated in Monitoring Windows system metrics with grafana)

Getting Started (Windows)

• Create a directory that will home base for OhmGraphite (I use C:\Apps\OhmGraphite).
• Download the latest zip and extract to our directory.
• Update app configuration (located at OhmGraphite.exe.config) using either the Graphite config or InfluxDB config
• This config can be updated in the future, but will require a restart of the app for effect.
• The app can be ran interactively by executing .\OhmGraphite.exe run. Executing as administrator will most likely increase the number of sensors found (OhmGraphite will log how many sensors are found).
• To install the app .\OhmGraphite.exe install. The command will install OhmGraphite as a Windows service (so you can manage it with your favorite powershell commands or services.msc)
• To start the app after installation: .\OhmGraphite.exe start or your favorite Windows service management tool

Graphite Configuration

The config below polls our hardware every 5 seconds and sends the results to a graphite server listening on localhost:2003.

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="host" value="localhost" />
    <add key="port" value="2003" />
    <add key="interval" value="5" />
  </appSettings>
</configuration>

InfluxDB Configuration

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="type" value="influxdb" />
    <add key="interval" value="5" />
    <add key="influx_address" value="http://localhost:8086" />
    <add key="influx_db" value="mydb" />
<!--
    <add key="influx_user" value="myuser" />
    <add key="influx_password" value="mypassword" />
-->
  </appSettings>
</configuration>

Upgrades

• Stop OhmGraphite service .\OhmGraphite.exe stop
• Unzip latest release and copy OhmGraphite.exe to your installation directory.
• Start OhmGraphite service .\OhmGraphite.exe start

Uninstall

• Stop OhmGraphite service .\OhmGraphite.exe stop
• Run uninstall command .\OhmGraphite.exe uninstall

Getting Started (Docker)

Since the full gambit of metrics aren't available in a Docker container, I've refrained from putting the project on docker hub lest it misleads people to think otherwise.

docker build -t nickbabcock/ohm-graphite .
docker run -v $PWD/app.config:/opt/OhmGraphite/OhmGraphite.exe.config:ro nickbabcock/ohm-graphite

app.config is in the same format as the above configuration.