[keycloak-user] Unknown authentication mechanism KEYCLOAK

[Rens Verhage]

Hi all,

I’m having some trouble securing a test application with Keycloak. I downloaded the keycloak-1.6.1.Final.zip. First thing I did was changing the datasource to PostgreSQL and in Keycloak configured my realm and generated a keycloak.json file.

I copied keycloak.json to the WEB-INF folder of my war project and edited my web.xml, I added this:

<login-config>
   <auth-method>KEYCLOAK</auth-method>
   <realm-name>PDC</realm-name>
</login-config>

<security-role>
   <role-name>admin</role-name>
</security-role>
<security-role>
   <role-name>user</role-name>
</security-role>

Upon boot however, Wildfly logs the following error:

"WFLYCTL0080: Failed services" => {"jboss.undertow.deployment.default-server.default-host./pdc-web" => "org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./pdc-web: java.lang.RuntimeException: java.lang.RuntimeException: UT010039: Unknown authentication mechanism KEYCLOAK
    Caused by: java.lang.RuntimeException: java.lang.RuntimeException: UT010039: Unknown authentication mechanism KEYCLOAK
    Caused by: java.lang.RuntimeException: UT010039: Unknown authentication mechanism KEYCLOAK”}}

The only hint to fix this error that I could find was to make sure that the Keycloak subsystem is enabled in standalone/configuration/standalone.xml, which is the case as I didn’t change the default config:

<server xmlns="urn:jboss:domain:3.0">
    <extensions>
	...
        <extension module="org.keycloak.keycloak-server-subsystem"/>
        ...
    </extensions>
…
</server>

As my experience with Wildfly and knowledge of Keycloak is limited, what could be the problem here?


Regards,
Rens Verhage