---
layout: "aws"
page_title: "AWS: aws_flow_log"
sidebar_current: "docs-aws-resource-flow-log"
description: |-
  Provides a VPC/Subnet/ENI Flow Log
---

# aws\_flow\_log

Provides a VPC/Subnet/ENI Flow Log to capture IP traffic for a specific network
interface, subnet, or VPC. Logs are sent to a CloudWatch Log Group.

```
resource "aws_flow_log" "test_flow_log" {
  log_group_name = "tf-test-log-group"
  iam_role_arn = "arn:aws:iam::470663696735:role/tf-test-cloud"
  vpc_id = "${aws_vpc.default.id}"
  traffic_type = "ALL"
}
```

## Argument Reference

The following arguments are supported:

* `log_group_name` - (Required) The name of the CloudWatch log group
* `iam_role_arn` - (Required) The ARN for the IAM role that's used to post flow
  logs to a CloudWatch Logs log group
* `vpc_id` - (Optional) VPC ID to attach to
* `subnet_id` - (Optional) Subnet ID to attach to
* `eni_id` - (Optional) Elastic Network Interface ID to attach to
* `traffic_type` - (Required) The type of traffic to capture. Valid values:
  `ACCEPT`,`REJECT`, `ALL`

## Attributes Reference

The following attributes are exported:

* `id` - The Flow Log ID