---
title: "Traefik Datadog Tracing Documentation"
description: "Traefik Proxy supports Datadog for tracing. Read the technical documentation to enable Datadog for observability."
---

# Datadog

To enable the Datadog tracer:

```yaml tab="File (YAML)"
tracing:
  datadog: {}
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
```

```bash tab="CLI"
--tracing.datadog=true
```

#### `localAgentHostPort`

_Optional, Default="localhost:8126"_

Local Agent Host Port instructs the reporter to send spans to the Datadog Agent at this address (host:port).

```yaml tab="File (YAML)"
tracing:
  datadog:
    localAgentHostPort: localhost:8126
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
    localAgentHostPort = "localhost:8126"
```

```bash tab="CLI"
--tracing.datadog.localAgentHostPort=localhost:8126
```

#### `localAgentSocket`

_Optional, Default=""_

Local Agent Socket instructs the reporter to send spans to the Datadog Agent at this UNIX socket.

```yaml tab="File (YAML)"
tracing:
  datadog:
    localAgentSocket: /var/run/datadog/apm.socket
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
    localAgentSocket = "/var/run/datadog/apm.socket"
```

```bash tab="CLI"
--tracing.datadog.localAgentSocket=/var/run/datadog/apm.socket
```

#### `debug`

_Optional, Default=false_

Enables Datadog debug.

```yaml tab="File (YAML)"
tracing:
  datadog:
    debug: true
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
    debug = true
```

```bash tab="CLI"
--tracing.datadog.debug=true
```

#### `globalTag`

??? warning "Deprecated in favor of the [`globalTags`](#globaltags) option."

    _Optional, Default=empty_
    
    Applies a shared key:value tag on all spans.
    
    ```yaml tab="File (YAML)"
    tracing:
      datadog:
        globalTag: sample
    ```
    
    ```toml tab="File (TOML)"
    [tracing]
      [tracing.datadog]
        globalTag = "sample"
    ```
    
    ```bash tab="CLI"
    --tracing.datadog.globalTag=sample
    ```

#### `globalTags`

_Optional, Default=empty_

Applies a list of shared key:value tags on all spans.

```yaml tab="File (YAML)"
tracing:
  datadog:
    globalTags:
      tag1: foo
      tag2: bar
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
    [tracing.datadog.globalTags]
      tag1 = "foo"
      tag2 = "bar"
```

```bash tab="CLI"
--tracing.datadog.globalTags.tag1=foo
--tracing.datadog.globalTags.tag2=bar
```

#### `prioritySampling`

_Optional, Default=false_

Enables priority sampling.
When using distributed tracing, 
this option must be enabled in order to get all the parts of a distributed trace sampled.

```yaml tab="File (YAML)"
tracing:
  datadog:
    prioritySampling: true
```

```toml tab="File (TOML)"
[tracing]
  [tracing.datadog]
    prioritySampling = true
```

```bash tab="CLI"
--tracing.datadog.prioritySampling=true
```