# FirelensConfigurationProperty

The FireLens configuration for the container.

This is used to specify and configure a log router for container logs. For more information, see [Custom log routing](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/using_firelens.html) in the *Amazon Elastic Container Service Developer Guide*.

- Source: Generated code
- Type last changed: v2.249.0 · 13 Apr 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_ecs as ecs } from 'aws-cdk-lib';
const firelensConfigurationProperty: ecs.CfnDaemonTaskDefinition.FirelensConfigurationProperty = {
  options: {
    optionsKey: 'options',
  },
  type: 'type',
};
```

## Properties

- `options`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | { [key: string]: string } — The options to use when configuring the log router.

  This field is optional and can be used to specify a custom configuration file or to add additional metadata, such as the task, task definition, cluster, and container instance details to the log event. If specified, the syntax to use is ``"options":{"enable-ecs-log-metadata":"true|false","config-file-type:"s3|file","config-file-value":"arn:aws:s3:::mybucket/fluent.conf|filepath"}``. For more information, see [Creating a task definition that uses a FireLens configuration](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/using_firelens.html#firelens-taskdef) in the *Amazon Elastic Container Service Developer Guide*.
    Tasks hosted on FARGATElong only support the ``file`` configuration file type.

- `type`: string — The log router to use.

  The valid values are ``fluentd`` or ``fluentbit``.