follow these instructions to have keycloack debug accessible from eclipse:

1- Simple web application
User a simple HelloServlet to try out the debugging process before applying you experience to wildfly.

1- Wildfly and eclipse
Like Thomas mentioned, Make sure you active the debug property while starting wildfly. This is independent of keycloak, as keycloak is just another web application running on wildfly. So make sure you have a simple webapp running in wildfly standalone so you can get used to the debugging process.

2- Wildfly in a docker container
Take your simple web application and wildfly into a docker container and try following:
a) Make sure you start wildfly in the container in debug mode. Not matter how you manage the docker containers in your development environment, you will have to expose their ports so you can reach the container from and outside the docker host. "Exposing the port means mapping the defined wildfly ports to some other ports on the docker host. If you are using docker-composer you have to try something like:   ports:\    - "8080:8080"\    - "8787:8787". In this case see the docker-compose reference for details.

3- Accessing the docker container
Once you wildfly docker container is startet in debug mode, make sure you can access you HelloServlet  from a web browser on the same machine on which you have your eclipse installed. If this works, use the same hostname or ip to replace "localhost" in you eclipse debugging config. Generally this will default to:

You did it right, you will be able to stop on the breakpoint inside your HelloServlet.

4- Keycloak
Repeat the same procedure with your custom authenticator. Do not forget to download the keycloak sources and include them in your the source path so you can navigate and set break points.

Best regards
Mit freundlichen Grüßen

Francis Pouatcha
Founder and Technical Lead Group Adorsys

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On Fri, Jul 1, 2016 at 2:39 AM, Rashmi Singh <singhrasster@gmail.com> wrote:
Thanks Thomas for your reply. I have a few questions on your response. I am still very new to docker, so please bear with me. 
when you say I can set env variables in docker container, would this be sufficient?

First connect to the docker container as:

docker exec -i -t keycloak bash
Then, once I am in the container, I run the following to set env variables?

set DEBUG_MODE=true
set DEBUG_PORT=8787
Then, restart the container as:
docker restart keycloak    (keycloak is the name of my container)
Also, how can I make sure that the env variable got correctly set in the docker container? From inside the container, if I run the command "env", should it list these new env variables if they are added successfully?

Then, when you say "......default on port 8787 which you need to expose on your docker container or use the container interface...", what exactly do you mean? Do you mean some sort of port forwarding? Could you tell me w tohat exactly I need to do with my existing container named as "keycloak"

Then, on eclipse, where you mentioned the settings for the Debug configurations, what should be the hostname there? would it be localhost? or the default machine IP of docker which is Or it should be something else?


On Thu, Jun 30, 2016 at 6:29 PM, Thomas Darimont <thomas.darimont@googlemail.com> wrote:

you could add -debug flag to the standalone.sh command-line or define the following env variables in your docker container:
set DEBUG_MODE=true
set DEBUG_PORT=8787

this will start keycloak with remote debugging enabled by default on port 8787 which you need to expose on your docker container or use the container interface...

you can then connect to the keycloak instance inside the docker container via the remote debugger from your IDE.
For eclipse just go to "Debug configurations..." -> Remote Java Application -> select your project with the custom authenticator -> adjust hostname and port and click "debug".


2016-07-01 0:26 GMT+02:00 Rashmi Singh <singhrasster@gmail.com>:
We have a Maven project setup on Eclipse that uses some keycloak features and we generate a jar that contains our AuthenticationProvider classes etc. 
We use docker for the deployment. We basically run a jboss/keycloak image there
We have a shell script that has a bunch of commands to copy our project jars from local to the keycloak image on docker container like:

docker cp /customauthenticator-1.0.0-SNAPSHOT.jar keycloak:/home/modules/xxx.yyy.zz.keycloak.customizations
docker restart keycloak

Running this shell script deploys everything on keycloak on docker.
And so far we are just putting logs throughout our code to debug issues.
We want to be able to setup a debugging environment on our eclipse. I am not sure how to achieve this when we use keycloak. Because, here we basically build our modules or authenticator jars etc and copy them to keycloak directories. So, it's not a standalone project war file that we are directly deploying to app server as such. So, then how do we put our maven project (creating jars etc) in a debug mode in eclipse? Is it possible? How?

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