# Dynatrace Output Plugin

This plugin sends Telegraf metrics to [Dynatrace](https://www.dynatrace.com) via the [Dynatrace Metrics API V2](https://www.dynatrace.com/support/help/dynatrace-api/environment-api/metric-v2/). It may be run alongside the Dynatrace OneAgent for automatic authentication or it may be run standalone on a host without a OneAgent by specifying a URL and API Token.
More information on the plugin can be found in the [Dynatrace documentation](https://www.dynatrace.com/support/help/how-to-use-dynatrace/metrics/metric-ingestion/ingestion-methods/telegraf/).

## Requirements

You will either need a Dynatrace OneAgent (version 1.201 or higher) installed on the same host as Telegraf; or a Dynatrace environment with version 1.202 or higher. Monotonic counters (e.g. `diskio.reads`, `system.uptime`) require Dynatrace 208 or later.

- Telegraf minimum version: Telegraf 1.16

## Getting Started

Setting up Telegraf is explained in the [Telegraf Documentation](https://docs.influxdata.com/telegraf/latest/introduction/getting-started/).
The Dynatrace exporter may be enabled by adding an `[[outputs.dynatrace]]` section to your `telegraf.conf` config file.
All configurations are optional, but if a `url` other than the OneAgent metric ingestion endpoint is specified then an `api_token` is required.
To see all available options, see [Configuration](#configuration) below.

### Running alongside Dynatrace OneAgent

If you run the Telegraf agent on a host or VM that is monitored by the Dynatrace OneAgent then you only need to enable the plugin, but need no further configuration. The Dynatrace Telegraf output plugin will send all metrics to the OneAgent which will use its secure and load balanced connection to send the metrics to your Dynatrace SaaS or Managed environment.
Depending on your environment, you might have to enable metrics ingestion on the OneAgent first as described in the [Dynatrace documentation](https://www.dynatrace.com/support/help/how-to-use-dynatrace/metrics/metric-ingestion/ingestion-methods/telegraf/).

Note: The name and identifier of the host running Telegraf will be added as a dimension to every metric. If this is undesirable, then the output plugin may be used in standalone mode using the directions below.

```toml
[[outputs.dynatrace]]
  ## No options are required. By default, metrics will be exported via the OneAgent on the local host.
```

## Running standalone

If you run the Telegraf agent on a host or VM without a OneAgent you will need to configure the environment API endpoint to send the metrics to and an API token for security.

You will also need to configure an API token for secure access. Find out how to create a token in the [Dynatrace documentation](https://www.dynatrace.com/support/help/dynatrace-api/basics/dynatrace-api-authentication/) or simply navigate to **Settings > Integration > Dynatrace API** in your Dynatrace environment and create a token with Dynatrace API and create a new token with 
'Ingest metrics' (`metrics.ingest`) scope enabled. It is recommended to limit Token scope to only this permission.

The endpoint for the Dynatrace Metrics API v2 is 

* on Dynatrace Managed: `https://{your-domain}/e/{your-environment-id}/api/v2/metrics/ingest`
* on Dynatrace SaaS: `https://{your-environment-id}.live.dynatrace.com/api/v2/metrics/ingest`

```toml
[[outputs.dynatrace]]
  ## If no OneAgent is running on the host, url and api_token need to be set

  ## Dynatrace Metrics Ingest v2 endpoint to receive metrics
  url = "https://{your-environment-id}.live.dynatrace.com/api/v2/metrics/ingest"

  ## API token is required if a URL is specified and should be restricted to the 'Ingest metrics' scope
  api_token = "your API token here" // hard-coded for illustration only, should be read from environment
```

You can learn more about how to use the Dynatrace API [here](https://www.dynatrace.com/support/help/dynatrace-api/).

## Configuration

### `url`

*required*: `false`

*default*: Local OneAgent endpoint

Set your Dynatrace environment URL (e.g.: `https://{your-environment-id}.live.dynatrace.com/api/v2/metrics/ingest`) if you do not use a OneAgent or wish to export metrics directly to a Dynatrace metrics v2 endpoint. If a URL is set to anything other than the local OneAgent endpoint, then an API token is required.

```toml
[[outputs.dynatrace]]
  ## Leave empty or use the local ingest endpoint of your OneAgent monitored host (e.g.: http://127.0.0.1:14499/metrics/ingest).
  ## Set Dynatrace environment URL (e.g.: https://YOUR_DOMAIN/api/v2/metrics/ingest) if you do not use a OneAgent
  url = ""
  api_token = ""
  ## Optional prefix for metric names (e.g.: "telegraf")
  prefix = "telegraf"
  ## Flag for skipping the tls certificate check, just for testing purposes, should be false by default
  insecure_skip_verify = false
  ## If you want to convert values represented as gauges to counters, add the metric names here
  additional_counters = [ ]
url = "https://{your-environment-id}.live.dynatrace.com/api/v2/metrics/ingest"
```

### `api_token`

*required*: `false` unless `url` is specified

API token is required if a URL other than the OneAgent endpoint is specified and it should be restricted to the 'Ingest metrics' scope.

```toml
api_token = "your API token here"
```

### `prefix`

*required*: `false`

Optional prefix to be prepended to all metric names (will be separated with a `.`).

```toml
prefix = "telegraf"
```

### `insecure_skip_verify`

*required*: `false`

Setting this option to true skips TLS verification for testing or when using self-signed certificates.

```toml
insecure_skip_verify = false
```

### `additional_counters`

*required*: `false`

If you want to convert values represented as gauges to counters, add the metric names here.

```toml
additional_counters = [ ]
```

### `default_dimensions`

*required*: `false`

Default dimensions that will be added to every exported metric.

```toml
default_dimensions = {
  key = "value"
}
```

## Limitations

Telegraf measurements which can't be converted to a number are skipped.
