static

README

Pyroscope pull with static targets

This example demonstrates how Pyroscope can be used together with Grafana Agent to scrape pprof profiles from remote static targets.

1. Run Pyroscope server and demo application in docker containers

docker-compose up -d

As a sample application we use slightly modified Jaeger Hot R.O.D. demo – the only difference is that we enabled built-in Go pprof HTTP endpoints. You can find the modified code in the hotrod-goland repository.

Note that we apply configuration defined in Grafana Agent config.river:

config.river

logging {
  level = "debug"
  format = "logfmt"
}

pyroscope.write "example" {
  // Send metrics to a locally running Pyroscope instance.
  endpoint {
    url = "http://pyroscope:4040"

    // To send data to Grafana Cloud you'll need to provide username and password.
    // basic_auth {
    //   username = "myuser"
    //   password = "mypassword"
    // }
  }
  external_labels = {
    "env" = "example",
  }
}


pyroscope.scrape "default" {
  targets = [
    {"__address__" = "hotrod:6060", "service_name"="hotrod"},
    {"__address__" = "app:6060", "service_name"="app"},
  ]
  forward_to = [pyroscope.write.example.receiver]
}

2. Observe profiling data

Profiling is more fun when the application does some work. Let's order some rides in our Hot R.O.D. app.

Now that everything is set up, you can browse profiling data via Pyroscope UI.