Reporting Metrics to Datadog
Datadog is a monitoring service for IT, Operations and Development teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into actionable insight.
Supported releases and dependencies are shown below.
|1.0.0||stable||1.8+||2.10, 2.11, 2.12|
To get started with SBT, simply add the following to your
libraryDependencies += "io.kamon" %% "kamon-datadog" % "1.0.0"
And add the Agent or API reporter to Kamon:
Kamon.addReporter(new DatadogAgentReporter()) // OR Kamon.addReporter(new DatadogAPIReporter())
By default, the Agent reporter assumes that you have an instance of the Datadog Agent running in localhost and listening on port 8125. If that is not the case the you can use the
kamon.datadog.agent.port configuration keys to point the module at your Datadog Agent installation.
When using the API reporter you must configure your API key using the
kamon.datadog.http.api-key configuration setting. Since Kamon has access to the entire distribution of values for a given period, the API reporter can directly post the data that would otherwise be summarized and sent by the Datadog Agent. Gauges andAll histogram-backed metrics will be reported as follows:
You can refer to the Datadog documentation for more details.
Kamon keeps all timing measurements in nanoseconds and memory measurements in bytes. In order to scale those to other units before sending to datadog set the
memory-units config keys to desired units. Supported units are:
n - nanoseconds µs - microseconds ms - milliseconds s - seconds b - bytes kb - kilobytes mb - megabytes gb - gigabytes
kamon.datadog.time-units = "ms"
will scale all timing measurements to milliseconds right before sending to datadog.
- Contrary to other Datadog client implementations, we don't flush the metrics data as soon as the measurements are taken but instead, all metrics data is buffered by the
kamon-datadogmodule and flushed periodically using the configured
- It is advisable to experiment with the
kamon.datadog.agent.max-packet-sizesettings to find the right balance between network bandwidth utilisation and granularity on your metrics data.
Visualization and Fun
Creating a dashboard in the Datadog user interface is really simple, all metric names will match the Kamon metric names with the additional "qualifier" suffix. Here is a very simple example of a dashboard created with metrics reported by Kamon: