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Add docs for customcmd collector

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Thomas Roehl 2021-12-27 16:58:57 +01:00
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collectors/customCmdMetric.md
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## `customcmd` collector
```json
"customcmd": {
"exclude_metrics": [
"mymetric"
],
"files" : [
"/var/run/myapp.metrics"
],
"commands" : [
"/usr/local/bin/getmetrics.pl"
],
}
```
The `customcmd` collector reads data from files and the output of executed commands. The files and commands can output multiple metrics (separated by newline) but the have to be in the [InfluxDB line protocol](https://docs.influxdata.com/influxdb/cloud/reference/syntax/line-protocol/). If a metric is not parsable, it is skipped. If a metric is not required, it can be excluded from forwarding it to the sink.