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A guide for configuring Keycloak as a authentication provider in WikiJS | https://wiki.js.org | Feature request for adding this to the docs: https://requarks.canny.io/wiki/p/keycloak-auth-docs-proposal-for-a-guide-written

Feature request for adding this to the docs on requarks.canny.io


Keycloak

Keycloak is an Open Source Identity and Access Management solution for modern Applications and Services.

Relevant information

Setup

Create Keycloak strategy instance on WikiJS

  1. In the Administration area of your wiki, click on Authentication in the left navigation menu
  2. Click on + ADD STRATEGY, scroll down and select Keycloak
  3. Click Apply (Just to make sure the instance ID will not be regenerated if the page is reloaded. This produces an error in the logs, so it might display an error on the frontend too in the future. If so just skip this step and double check the ID when setting it up)
  4. Go to the bottom of the page and copy/note the Callback URL / Redirect URI
  5. We will fill out the rest after setting up the Keycloak client

Creating a Keycloak client

  1. At the Keycloak administration page, go to the Clients menu, and click Create button on the right
  2. Enter a Client ID, for example wikijs (You wil need the Client ID later)
  3. Select openid-connect as Client Protocol
  4. And Root URL is the base URL to Wikijs (for example https://wiki.example.com)
  5. Click Save
  6. Change Access Type to confidential
  7. Enter the Valid Redirect URIs, which is the Callback URL / Redirect URI from WikiJS (ex. https://wiki.example.com/login/d03f689b-0dd0-44d6-90ca-6386ec41d799/callback, or just the path /login/{GUID}/callback)
  8. Set Base URL to the same as Root URL
  9. Set Web Origins to +, which means to use the URIs in the Valid Redirect URIs entry.
  10. Now click Save at the bottom of the page
  11. Go to the Credentials tab and copy the Secret (You will need this one later too)

Configure the Keycloak strategy in Wiki.js

  1. If you're not already there. Go to the Administration area of your wiki, click on Authentication in the left navigation menu
  2. Click on Keycloak
  3. Enter the Host, which is the domain (incl. the scheme) of your Keycloak server (Example: https://keycloak.example.com)
  4. Enter the Realm, which is the realm you are using in Keycloak (Default is: master)
  5. Enter the Client Id, which is the Client ID from Keycloak
  6. Enter the Client Secret, which is the Secret from Keycloak
  7. Enter the Authorization Endpoint URL, which is https://keycloak.example.com/auth/realms/master/protocol/openid-connect/auth
  8. Enter the Token URL, which is https://keycloak.example.com/auth/realms/master/protocol/openid-connect/token
  9. Enter the User Info URL, which is https://keycloak.example.com/auth/realms/master/protocol/openid-connect/userinfo
  10. If you want the user to be logged out of Keycloak when logging out of WikiJS, enable Logout from Keycloak on Logout
  11. Enter the Logout Endpoint URL, which is https://keycloak.example.com/auth/realms/master/protocol/openid-connect/logout
  12. Check Allow self-registration to enable the Keycloak login button, and auto create users as they login for the first time.
  13. Remember to add a group with at least read permissions in the Assign to group list
  14. Click Apply in the top-left corner and try to login

Seamless login

If the login worked, you can enable Bypass Login Screen under the Security tab in the left navigation menu.
Make sure the Keycloak provider is at the top of the list in the Authentication tab.

@MaxwellPSanders
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MaxwellPSanders commented Aug 19, 2022

I am using Keycloak 19 and Wiki.js 2.5 and I'm having the same issue where it will redirect and be able to get a session with keycloak.
That said, I also get the "Failed to obtain access token" message.
If anyone has figured this out, I appreciate your help!

@chriseaton
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chriseaton commented Sep 1, 2022

I managed to go through this and found a solution to the "Failed to obtain access token" and invalid username / password, despite a correct configuration in both KeyCloak and Wiki.js. Wiki.js is written in node.JS and under the hood uses passport. Node will, by default, reject any self-signed SSL certificates. The problem is passport does throw this error, but as it bubbles up through wiki.js' error stack - it turns into a much more vague/incorrect "Failed to obtain access token" error.

There are 2 resolutions (only 1 is needed):

  1. Tell node to ignore the self-signed cert. If you are running a self-signed certificate in this case, you'll need to use the environmental variable and value NODE_TLS_REJECT_UNAUTHORIZED=0 on your wiki.js host/docker container to tell node to stop worrying about the self-signed certificate.
  2. Introduce your custom CA The other alternative is to hook up your custom/internal CA to the wiki.js host cert chain so the self-signed certificate becomes "valid" - also see NODE_EXTRA_CA_CERTS for this option if you don't want to mess with the host CA cert chains.

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