prom-to-kairosdb

prom-to-kairosdb is a remote storage adapter for Prometheus that listens for metrics from Prometheus remote write service, and pushes to downstream KairosDB.

It exposes following end points:

Endpoint	Details
/write	Listens to metrics from Prometheus, reformat them, and push to KairosDB
/metrics	exposed the metrics for the prom-to-kairosdb itself

By default the service starts on port 9201.

Relabeling

Like Prometheus, this service also supports a few relabeling features. e.g. if you want to drop an unwanted metric or keep only specific metrics or rename the metric itself etc.

Following are the Action it supports:

Action	Details	Example
keep	drops any metrics for which the provided sourcelabels does not matches the regex.
drop	drops any metrics for which the provided sourcelabels matches the regex.
labelkeep	drops any label not matching the regex.
labeldrop	drops any label matching the regex.
addprefix	Adds prefix to the metric name that matches the regex.

Examples

drop the metrics that matches regex

#drop the metric if metricname (identified by __name__) matches regex 'my_too_large_metric'
metric_relabel_configs:
   - source_labels: [ __name__ ]
     regex: 'my_too_large_metric'
     action: drop

keep the metric that matches regex (drop everything else)

#keep the metric if metricname (identified by __name__) matches regex 'my_imp_metric'
metric_relabel_configs:
   - source_labels: [ __name__ ]
     regex: 'my_imp_metric'
     action: keep

drop the labels that matches regex

#drop the label that does match regex 'label-not-needed'
metric_relabel_configs:
   - regex: 'label-not-needed'
     action: labeldrop

keep the labels that match regex

#drop the labels that does not match regex 'label-not-needed'
metric_relabel_configs:
   - regex: 'label-needed'
     action: labelkeep

Add prefix to the metricname where sourcelabels values match regex

#Add the prefix to the metric name if the value of tagName in the metric tags, matches the regex 'tagValue'
metric_relabel_configs:
   - source_labels: [ tagName ]
     regex: 'tagValue'
     action: keep