Use the `execd` shim
The shim makes it easy to extract an internal input,
processor, or output plugin from the main Telegraf repo out to a stand-alone repo. This allows anyone to build and run it as a separate app using one of the
Extract a plugin using the shim wrapper
- Move the project to an external repo. We recommend preserving the path
structure: for example, if your plugin was located at
plugins/inputs/cpuin the Telegraf repo, move it to
plugins/inputs/cpuin the new repo.
- Copy main.go into your project under the
cmdfolder. This serves as the entry point to the plugin when run as a stand-alone program.
The shim isn’t designed to run multiple plugins at the same time, so include only one plugin per repo.
- Edit the
main.gofile to import your plugin. For example,
_ "github.com/me/my-plugin-telegraf/plugins/inputs/cpu". See an example of where to edit
- Add a plugin.conf for configuration
specific to your plugin.
This config file must be separate from the rest of the config for Telegraf, and must not be in a shared directory with other Telegraf configs.
Test and run your plugin
- Build the
cmd/main.gousing the following command with your plugin name:
go build -o plugin-name cmd/main.go
- Test the binary:
- If you’re building a processor or output, first feed valid metrics in on
STDIN. Skip this step if you’re building an input.
- Test out the binary by running it (for example,
./project-name -config plugin.conf). Metrics will be written to
STDOUT. You might need to hit enter or wait for your poll duration to elapse to see data.
Ctrl-Cto end your test.
- Configure Telegraf to call your new plugin binary. For an input, this would look something like:
[[inputs.execd]] command = ["/path/to/rand", "-config", "/path/to/plugin.conf"] signal = "none"
Refer to the
execd plugin documentation for more information.
Publish your plugin
Publishing your plugin to GitHub and open a Pull Request back to the Telegraf repo letting us know about the availability of your external plugin.
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