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nixos/prometheus: add scrape_configs.honor_labels

This commit is contained in:
Oliver Charles 2017-11-17 10:15:37 +00:00
parent 9e44d34be2
commit f0334c0336
1 changed files with 23 additions and 0 deletions
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23
nixos/modules/services/monitoring/prometheus/default.nix
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@ -100,6 +100,29 @@ let
The HTTP resource path on which to fetch metrics from targets.
'';
};
honor_labels = mkOption {
type = types.bool;
default = false;
description = ''
Controls how Prometheus handles conflicts between labels
that are already present in scraped data and labels that
Prometheus would attach server-side ("job" and "instance"
labels, manually configured target labels, and labels
generated by service discovery implementations).
If honor_labels is set to "true", label conflicts are
resolved by keeping label values from the scraped data and
ignoring the conflicting server-side labels.
If honor_labels is set to "false", label conflicts are
resolved by renaming conflicting labels in the scraped data
to "exported_<original-label>" (for example
"exported_instance", "exported_job") and then attaching
server-side labels. This is useful for use cases such as
federation, where all labels specified in the target should
be preserved.
'';
};
scheme = mkOption {
type = types.enum ["http" "https"];
default = "http";