# **Authentik Overview**

Authentik is an open-source Identity Provider (IdP) that allows users to self-host authentication and single sign-on (SSO)

[GitHub Repository](https://github.com/goauthentik/authentik)
[Official Documentation](https://docs.goauthentik.io/docs)
# **Pre-Install**

## Dependencies
- None
## Generate PG_PASS for .env
- `openssl rand -base64 36`
## Generate AUTHENTIK_SECRET_KEY for .env
- `openssl rand -base64 60`
## Create Volume Folders
- certs
- custom-templates
- database
- media
- redis
## Create a .env file
```docker
AUTHENTIK_PORT_HTTP=9000
AUTHENTIK_PORT_HTTPS=9443
PG_PASS=
AUTHENTIK_SECRET_KEY=
AUTHENTIK_ERROR_REPORTING__ENABLED=true
AUTHENTIK_EMAIL__HOST=
AUTHENTIK_EMAIL__PORT=25
AUTHENTIK_EMAIL__USERNAME=
AUTHENTIK_EMAIL__PASSWORD=
AUTHENTIK_EMAIL__USE_TLS=true
AUTHENTIK_EMAIL__USE_SSL=false
AUTHENTIK_EMAIL__TIMEOUT=10
AUTHENTIK_EMAIL__FROM=
```

# **Post-Install**

> **⚠️ WARNING**  
> Wait a few minutes before attempting to connect for the first time. All servers need to show as **Healthy** in Dockge

Go to http://your-server-ip:9000/if/flow/initial-setup/ 
- Create a unique email and password for admin account
- Don't use your primary email address for this account as it will conflict when you register yourself as a user

# **NGINX Proxy Manager**

## Details
- **Domain Names:** auth.ignitedinspirations.net
- **Scheme:** http
- **Forward Hostname / IP:** 172.18.1.10
- **Forward Port:** 9443
- **Cache Assets:** True
- **Block Common Exploits:** True
- **Websockets Support:** True
- **Access Lists:** Publicly Accessible
## Custom Locations
- None
## SSL
- **SSL Certificate:** Let's Encrypt
- **Force SSL:** True
- **HTTP/2 Support:** True
- **HSTS Enabled:** False
- **HSTS Subdomains:** False

## Advanced
The following code needs to be entered into the **Custom Nginx Configuration** in order to have Authentik protect this app
```NGINX
# Increase buffer size for large headers
# This is needed only if you get 'upstream sent too big header while reading response
# header from upstream' error when trying to access an application protected by goauthentik
proxy_buffers 8 16k;
proxy_buffer_size 32k;

location / {
    # Put your proxy_pass to your application here
    proxy_pass          $forward_scheme://$server:$port;

    # authentik-specific config
    auth_request        /outpost.goauthentik.io/auth/nginx;
    error_page          401 = @goauthentik_proxy_signin;
    auth_request_set $auth_cookie $upstream_http_set_cookie;
    add_header Set-Cookie $auth_cookie;

    # translate headers from the outposts back to the actual upstream
    auth_request_set $authentik_username $upstream_http_x_authentik_username;
    auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
    auth_request_set $authentik_email $upstream_http_x_authentik_email;
    auth_request_set $authentik_name $upstream_http_x_authentik_name;
    auth_request_set $authentik_uid $upstream_http_x_authentik_uid;

    proxy_set_header X-authentik-username $authentik_username;
    proxy_set_header X-authentik-groups $authentik_groups;
    proxy_set_header X-authentik-email $authentik_email;
    proxy_set_header X-authentik-name $authentik_name;
    proxy_set_header X-authentik-uid $authentik_uid;
}

# all requests to /outpost.goauthentik.io must be accessible without authentication
location /outpost.goauthentik.io {
    proxy_pass          https://<IP_ADDRESS>:9443/outpost.goauthentik.io;
    # ensure the host of this vserver matches your external URL you've configured
    # in authentik
    proxy_set_header    Host $host;
    proxy_set_header    X-Original-URL $scheme://$http_host$request_uri;
    add_header          Set-Cookie $auth_cookie;
    auth_request_set    $auth_cookie $upstream_http_set_cookie;

    # required for POST requests to work
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";
}

# Special location for when the /auth endpoint returns a 401,
# redirect to the /start URL which initiates SSO
location @goauthentik_proxy_signin {
    internal;
    add_header Set-Cookie $auth_cookie;
    return 302 /outpost.goauthentik.io/start?rd=$request_uri;
    # For domain level, use the below error_page to redirect to your authentik server with the full redirect path
    # return 302 https://authentik-server:9443/outpost.goauthentik.io/start?rd=$scheme://$http_host$request_uri;
}
```

> **Note** 
> If you are using Portainer to manage your Docker environment, you need to specify the ENV_FILE name to be `stacks.env` 

Edit the IP address in `proxy_pass` above and make sure it matches the one you specify in the Authentik docker-compose file

# **Authentik**

## Create Google OAuth2 token
1) Go to [Official Documentation](https://support.google.com/cloud/answer/6158849?hl=en) and follow steps there
	- Make note of the Client ID and Client Secret
2) Add `https://your-authentik-domain-name/source/oauth/callback/google` to list of Authorized redirect URI
## Add Google SSO Support
[Official Documentation](https://docs.goauthentik.io/docs/users-sources/sources/social-logins/google/cloud/)
1) Click on **Directory** and then click on **Federation & Social login**
2) Click on **Create**
3) Click on **Google OAuth Source** and click **Next**
4) Enter Google for the **Name**
5) The **Slug** will automatically be filled
6) Enter your Client ID and Client Secret generated when creating Google OAuth2 token
7) Click **Finish**
## Add Google as a Login Source
[Official Documentation](https://docs.goauthentik.io/docs/users-sources/sources/#add-sources-to-default-login-page)
1) Click on **Flow and Stages** then click on **Stages**
2) Find the `default-authentication-identification` stage and click on the Edit button
3) Under **Source settings** click on `google` and then click on `>` to add it
## Add User to Directory
1) Navigate to **Directory** then click on **Users**
2) Enter your email address for the **Username**
3) Enter your full name for **Name**
4) Set **User type** to **Internal**
5) Enter your email address for **Email**
6) Click **Create**
## Add User to Admin Group
1) Navigate to **Directory** then click on **Groups**
2) Click on `authentik Admins`
3) Click on **Users** tab
4) Click on **Add existing user**
5) Click on `+` then select your account and click **Add**
6) Click **Add**
## Set New Users to Inactive by Default
1) Click on **Flow and Stages** then click on **Stages**
2) Find the `default-source-enrollment-write` stage and click the Edit button
3) Toggle the **Create users as inactive** to On
## Create Application & Provider
1) Click on **Create with Wizard**
2) Enter the Application's Name
	- This will automatically fill the **Slug** name
3) Do not enter a Group Name
4) Set **Policy engine mode** to `any` and click **Next**
5) Select **Proxy Provider** and click **Next**
6) **Name** will automatically be filled in
7) Select `default-provider-authorization-explicit-consent` for **Authorization Flow**
8) Click on **Forward auth (single application)**
9) Enter the **External host** name and click **Next**
	- This is generally the proxy hostname (ex. https://docker.mysite.com)
10) Skip **Policy/User/Group Bindings** step and click **Next**
11) Click **Close**
## Add Application to Outpost
1) Click on **Application** then click on **Outposts**
2) Find the `authentik Embedded Outpost` and click the Edit button on the right
3) Click on the application under the **Available Applications** and then click on the `>` button
4) Click on **Update**
# **Additional Information**
---
> **⚠️ WARNING**  
> If you are using Portainer to manage your Docker environment, you need to specify the ENV_FILE name to be `stacks.env`