# Docker Log Based Metrics

## Configuration Parameters

The plugin supports the following configuration parameters:

| Key             | Description                                                                                                                         | Default                      |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- |
| Interval\_Sec   | Polling interval in seconds                                                                                                         | 1                            |
| Include         | A space-separated list of containers to include                                                                                     |                              |
| Exclude         | A space-separated list of containers to exclude                                                                                     |                              |
| Threaded        | Indicates whether to run this input in its own [thread](https://docs.fluentbit.io/manual/3.2/administration/multithreading#inputs). | `false`                      |
| path.containers | Used to specify the container directory if Docker is configured with a custom "data-root" directory.                                | `/var/lib/docker/containers` |

If you set neither `Include` nor `Exclude`, the plugin will try to get metrics from *all* the running containers.

## Configuration File

Here is an example configuration that collects metrics from two docker instances (`6bab19c3a0f9` and `14159be4ca2c`).

{% tabs %}
{% tab title="fluent-bit.conf" %}

```python
[INPUT]
    Name         docker
    Include      6bab19c3a0f9 14159be4ca2c
[OUTPUT]
    Name   stdout
    Match  *
```

{% endtab %}

{% tab title="fluent-bit.yaml" %}

```yaml
pipeline:
    inputs:
        - name: docker
          include: 6bab19c3a0f9 14159be4ca2c

    outputs:
        - name: stdout
          match: '*'
```

{% endtab %}
{% endtabs %}

This configuration will produce records like below.

```
[1] docker.0: [1571994772.00555745, {"id"=>"6bab19c3a0f9", "name"=>"postgresql", "cpu_used"=>172102435, "mem_used"=>5693400, "mem_limit"=>4294963200}]
```