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Document --constantLabels
This functionality was added in c225a1e194
but not documented.
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@ -65,6 +65,9 @@ Package vendoring is handled with [`govendor`](https://github.com/kardianos/gove
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Set the log output target and format. e.g. `logger:syslog?appname=bob&local=7` or `logger:stdout?json=true`
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Defaults to `logger:stderr`.
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* `constantLabels`
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Labels to set in all metrics. A list of `label=value` pairs, separated by commas.
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### Environment Variables
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The following environment variables configure the exporter:
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@ -101,6 +104,9 @@ The following environment variables configure the exporter:
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* `PG_EXPORTER_EXTEND_QUERY_PATH`
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Path to a YAML file containing custom queries to run. Check out [`queries.yaml`](queries.yaml)
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for examples of the format.
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* `PG_EXPORTER_CONTANT_LABELS`
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Labels to set in all metrics. A list of `label=value` pairs, separated by commas.
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Settings set by environment variables starting with `PG_` will be overwritten by the corresponding CLI flag if given.
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