lego/docs/content/dns/zz_gen_lightsail.md
Clement Jean 2a194d6ab9
aws: detailed credentials (#1439)
Co-authored-by: Fernandez Ludovic <ldez@users.noreply.github.com>
2021-06-28 01:31:18 +00:00

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---
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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