78 lines
3.0 KiB
Markdown
78 lines
3.0 KiB
Markdown
---
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title: Amazon Web Services
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---
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<span class="badge badge--primary">Support level: authentik</span>
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## What is AWS
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:::note
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Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform, offering over 175 fully featured services from data centers globally. Millions of customers—including the fastest-growing startups, largest enterprises, and leading government agencies—are using AWS to lower costs, become more agile, and innovate faster.
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:::
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## Preparation
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The following placeholders will be used:
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- `authentik.company` is the FQDN of the authentik install.
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Create an application in authentik and note the slug, as this will be used later. Create a SAML provider with the following parameters:
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- ACS URL: `https://signin.aws.amazon.com/saml`
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- Audience: `urn:amazon:webservices`
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- Issuer: `authentik`
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- Binding: `Post`
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You can of course use a custom signing certificate, and adjust durations.
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## AWS
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Create a role with the permissions you desire, and note the ARN.
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After you've created the Property Mappings below, add them to the Provider.
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Create an application, assign policies, and assign this provider.
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Export the metadata from authentik, and create an Identity Provider [here](https://console.aws.amazon.com/iam/home#/providers).
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#### Role Mapping
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The Role mapping specifies the AWS ARN(s) of the identity provider, and the role the user should assume ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-attribute)).
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This Mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/Role"
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As expression, you can return a static ARN like so
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```python
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return "arn:aws:iam::123412341234:role/saml_role,arn:aws:iam::123412341234:saml-provider/authentik"
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```
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Or, if you want to assign AWS Roles based on Group membership, you can add a custom attribute to the Groups, for example "aws_role", and use this snippet below. Groups are sorted by name and later groups overwrite earlier groups' attributes.
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```python
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role_name = user.group_attributes().get("aws_role", "")
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return f"arn:aws:iam::123412341234:role/{role_name},arn:aws:iam::123412341234:saml-provider/authentik"
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```
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If you want to allow a user to choose from multiple roles, use this snippet
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```python
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return [
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"arn:aws:iam::123412341234:role/role_a,arn:aws:iam::123412341234:saml-provider/authentik",
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"arn:aws:iam::123412341234:role/role_b,arn:aws:iam::123412341234:saml-provider/authentik",
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"arn:aws:iam::123412341234:role/role_c,arn:aws:iam::123412341234:saml-provider/authentik",
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]
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```
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### RoleSessionName Mapping
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The RoleSessionMapping specifies what identifier will be shown at the top of the Management Console ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-session-attribute)).
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This mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/RoleSessionName".
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To use the user's username, use this snippet
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```python
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return user.username
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```
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