# Custom

### Custom Extension

The Custom extension can be used to inject a custom OTel extension into a Configuration. A List of supported extensions can be found [here](https://github.com/observIQ/bindplane-otel-collector/blob/main/docs/extensions.md).

### Configuration Table

<table><thead><tr><th width="151.4140625">Parameter</th><th width="194.11328125">Type</th><th width="101.88671875">Default</th><th>Description</th></tr></thead><tbody><tr><td>telemetry_types</td><td><code>telemetrySelector</code></td><td><code>[]</code></td><td>Choose Telemetry Type.</td></tr><tr><td>configuration</td><td><code>yaml</code></td><td>required</td><td>Enter any supported Extension and the YAML will be inserted into the configuration.</td></tr></tbody></table>

### Example Configuration

In this example, we use the Custom extension type to inject the following [health check extension](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/v0.91.0/extension/healthcheckextension/README.md).

```yaml
healthcheck:
  endpoint: 0.0.0.0:13133
  path: /health
```

**Web Interface**

<figure><img src="/files/6wE8zQaETVdTqDvxR9U1" alt="Bindplane docs - Custom - image 1"><figcaption></figcaption></figure>

**Standalone Extension**

```yaml
apiVersion: bindplane.observiq.com/v1
kind: Extension
metadata:
  name: custom-health-check
  spec:
    type: custom
    parameters:
      - name: telemetry_types
        value: ['Logs', 'Metrics', 'Traces']
      - name: configuration
        value: |
          health_check:
            endpoint: 0.0.0.0:13133
            path: /health
```

**Configuration with Embedded Extension**

```yaml
apiVersion: bindplane.observiq.com/v1
kind: Configuration
metadata:
  name: custom-configuration-with-extensions
  labels:
    platform: linux
spec:
  extensions:
    - type: custom
      parameters:
        - name: telemetry_types
          value: ['Logs', 'Metrics', 'Traces']
        - name: configuration
          value: |
            health_check:
              endpoint: 0.0.0.0:13133
              path: health
```


---

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