History

John Watson 964996f538 update the examples for 0.16.0 (#2780 )		2021-02-09 12:09:00 -08:00
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src/main/java/io/opentelemetry/example/prometheus	update the examples for 0.16.0 (#2780 )	2021-02-09 12:09:00 -08:00
README.md	Use shadow plugin to generate bundled jars. (#2641 )	2021-02-02 12:04:54 +09:00
build.gradle	Example updates for 0.15.0 (#2611 )	2021-02-01 09:24:02 -08:00
prometheus.yml	1503 prometheus example (#1541 )	2020-08-17 14:17:05 -07:00

README.md

Prometheus Example

This example demonstrates how to use the OpenTelemetry SDK to instrument a simple application using Prometheus as the metric exporter and expose the metrics via HTTP.

These are collected by a Prometheus instance which is configured to pull these metrics via HTTP.

How to run

Prerequisites

Java 1.7
Docker 19.03

1 - Compile

../gradlew shadowJar

2 - Run Prometheus

Start Prometheus instance with a configuration that sets up a HTTP collection job for 127.0.0.1:19090

See prometheus.yml

docker run --network="host" --rm -it \
    --name prometheus \
    -v $(pwd)/prometheus.yml:/etc/prometheus/prometheus.yml \
    prom/prometheus

3 - Start the Application

java -cp build/libs/opentelemetry-examples-prometheus-0.1.0-SNAPSHOT-all.jar io.opentelemetry.example.prometheus.PrometheusExample 19090

4 - Open the Prometheus UI

Navigate to:

http://localhost:9090/graph?g0.range_input=15m&g0.expr=incoming_messages&g0.tab=0