counter:prometheus:exporter

Table of Contents

About

An exporter is an endpoint that:

produces a page with metrics
that the collector can scrap.

By default, the URL is:

http://hostname:exporterport/metrics

Filtering

Exporters may add filter capabilities via the URL. (You should verify it with the exporter documentation)

Example with a name[] URL parameter for querying only specific metric names. Examples:

/metrics?name[]=jvm_threads_current
/metrics?name[]=jvm_threads_current&name[]=jvm_threads_daemon

A Prometheus scrap job (collector) may be filtered via relabeling action

Example

node exporter for Linux Metrics
grok exporter that uses Grok patterns for extracting Prometheus metrics from arbitrary log files.
Nginx log exporter that uses mtail to scrape the nginx log