prometheus-sample-app

This Prometheus sample app generates all 4 Prometheus metric types (counter, gauge, histogram, summary) and exposes them at the /metrics endpoint

A health check endpoint also exists at /

The following is a list of optional command line flags for configuration:

• listen_address: (default = 0.0.0.0:8080)this defines the address and port that the sample app is exposed to. This is primarily to conform with the test framework requirements.
• metric_count: (default=1) the amount of each type of metric to generate. The same amount of metrics is always generated per metric type.

Steps for running locally:

$ go build .
$ ./prometheus-sample-app -listen_address=0.0.0.0:4567 -metric_count=100

Steps for running in docker:

$ docker build . -t prometheus-sample-app
$ docker run -it -p 8080:8080 prometheus-sample-app /bin/main -listen_address=0.0.0.0:8080
$ curl localhost:8080/metrics

Note that the port in LISTEN_ADDRESS must match the the second port specified in the port-forward

More functioning examples:

$ docker build . -t prometheus-sample-app
$ docker run -it -p 9001:8080 prometheus-sample-app /bin/main -listen_address=0.0.0.0:8080
$ curl localhost:9001/metrics

$ docker build . -t prometheus-sample-app
$ docker run -it -p 9001:8080 prometheus-sample-app /bin/main -listen_address=0.0.0.0:8080 -metric_count=100
$ curl localhost:9001/metricss