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docs: describe configuration sources and exporter options - #2644
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Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
dhoard
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Nov 5, 2026
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I documented the configuration sources used by
PrometheusPropertiesLoader—classpath and selected properties files, system properties,IO_PROMETHEUS_*environment variables, and caller-supplied properties—their precedence, and file selection throughPROMETHEUS_CONFIG. The documentation also describes unknown-property validation and theload(Map)API. I documented the common exporter options supported byExporterProperties.Fixes #1882.