lego/docs/content/dns/zz_gen_lightsail.md

---
title: "Amazon Lightsail"
date: 2019-03-03T16:39:46+01:00
draft: false
slug: lightsail
---

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Since: v0.5.0

Configuration for [Amazon Lightsail](https://aws.amazon.com/lightsail/).


<!--more-->

- Code: `lightsail`

{{% notice note %}}
_Please contribute by adding a CLI example._
{{% /notice %}}




## Credentials

| Environment Variable Name | Description |
|-----------------------|-------------|
| `AWS_ACCESS_KEY_ID` | Managed by the AWS client. Access key ID (`AWS_ACCESS_KEY_ID_FILE` is not supported, use `AWS_SHARED_CREDENTIALS_FILE` instead) |
| `AWS_SECRET_ACCESS_KEY` | Managed by the AWS client. Secret access key (`AWS_SECRET_ACCESS_KEY_FILE` is not supported, use `AWS_SHARED_CREDENTIALS_FILE` instead) |
| `DNS_ZONE` | Domain name of the DNS zone |

The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
More information [here](/lego/dns/#configuration-and-credentials).


## Additional Configuration

| Environment Variable Name | Description |
|--------------------------------|-------------|
| `AWS_SHARED_CREDENTIALS_FILE` | Managed by the AWS client. Shared credentials file. |
| `LIGHTSAIL_POLLING_INTERVAL` | Time between DNS propagation check |
| `LIGHTSAIL_PROPAGATION_TIMEOUT` | Maximum waiting time for DNS propagation |

The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
More information [here](/lego/dns/#configuration-and-credentials).

## Description

AWS Credentials are automatically detected in the following locations and prioritized in the following order:

1. Environment variables: `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, [`AWS_SESSION_TOKEN`]
2. Shared credentials file (defaults to `~/.aws/credentials`, profiles can be specified using `AWS_PROFILE`)
3. Amazon EC2 IAM role

AWS region is not required to set as the Lightsail DNS zone is in global (us-east-1) region.

## Policy

The following AWS IAM policy document describes the minimum permissions required for lego to complete the DNS challenge.

```json
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "lightsail:DeleteDomainEntry",
        "lightsail:CreateDomainEntry"
      ],
      "Resource": "<Lightsail DNS zone ARN>"
    }
  ]
}
```

Replace the `Resource` value with your Lightsail DNS zone ARN.
You can retrieve the ARN using aws cli by running `aws lightsail get-domains --region us-east-1` (Lightsail web console does not show the ARN, unfortunately).
It should be in the format of `arn:aws:lightsail:global:<ACCOUNT ID>:Domain/<DOMAIN ID>`.
You also need to replace the region in the ARN to `us-east-1` (instead of `global`).

Alternatively, you can also set the `Resource` to `*` (wildcard), which allow to access all domain, but this is not recommended.



## More information


- [Go client](https://github.com/aws/aws-sdk-go/)

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