Document label-based routing for Prometheus remote write endpoint#6583
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felixbarny wants to merge 2 commits into
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Document label-based routing for Prometheus remote write endpoint#6583felixbarny wants to merge 2 commits into
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Documents the new label-based routing feature for the Prometheus remote write endpoint, introduced in elastic/elasticsearch#148910.
Previously, routing metrics to different data streams required separate
remote_writeblocks each targeting a different URL path. This becomes unwieldy when a single Prometheus instance scrapes services that should land in different data streams.The new
data_stream_datasetanddata_stream_namespacelabels let you attach routing metadata at the individual time series level, so a single endpoint can fan out to multiple data streams. Labels take precedence over the URL path, with unset labels falling back to the path segment value.The label names use underscores rather than dots to ensure compatibility with all Prometheus versions out of the box — dot-containing label names require Prometheus 2.47+ with
--enable-feature=utf8-names.