Keycloak 8: User with username 'admin' already added

Question

I cannot start keycloak container using ansible and docker-compose. I'am getting error: User with username 'admin' already added to '/opt/jboss/keycloak/standalone/configuration/keycloak-add-user.json'

I have 3 ansible jobs:

Create netwrok:

- name: Create a internal network   docker_network:     name: internal 

Setup postgres:

- name: "Install Postgres"   docker_compose:     project_name: posgressdb     restarted: true     pull: yes     definition:       version: '2'       services:         postgres:           image: postgres:12.1           container_name: postgres           restart: always           env_file:             - /etc/app/db.env           networks:             - internal           volumes:             - postgres-data:/var/lib/postgresql/data             - /etc/app/createdb.sh:/docker-entrypoint-initdb.d/init-app-db.sh           ports:             - "5432:5432"       volumes:         postgres-data:       networks:         internal:           external:             name: internal 

Create keycloak container:

- name: Install keycloak   docker_compose:     project_name: appauth     restarted: true     pull: yes     definition:       version: '2'       services:         keycloak:           image: jboss/keycloak:8.0.1           container_name: keycloak           restart: always           environment:             - DB_VENDOR=POSTGRES             - DB_ADDR=postgres             - DB_PORT=5432             - DB_SCHEMA=public             - DB_DATABASE=keycloak             - DB_USER=keycloak             - DB_PASSWORD=keycloak             - KEYCLOAK_USER=admin             - KEYCLOAK_PASSWORD=admin           networks:             - internal       networks:         internal:           external:             name: internal  

Does anyone have any idea why I get this error?

EDIT

If I downgrade keycloak to version 7 it starts normally!

Answer 1

Just to clarify the other answers. I had the same issue. What helped for me was:

1. stop all containers

2. comment out the two relevant lines

   version: "3"  services:   keycloak:     image: quay.io/keycloak/keycloak:latest     environment:       # KEYCLOAK_USER: admin       # KEYCLOAK_PASSWORD: pass       ... 

3. start all containers;

4. wait until keycloak container has successfully started
5. stop all containers, again

6. comment back in the two lines from above

   version: "3"  services:   keycloak:     image: quay.io/keycloak/keycloak:latest     environment:       KEYCLOAK_USER: admin       KEYCLOAK_PASSWORD: pass       ... 

7. start all containers

This time (and subsequent times) it worked. Keycloak was running and the admin user was registered and working as expected.

Answer 2

This happens when Keycloak is interrupted during boot. After this, command which attempts to add admin user starts to fail. In Keycloak 7 this wasn't fatal, but in 8.0.1 this line was added to /opt/jboss/tools/docker-entrypoint.sh which aborts the entire startup script:

set -eou pipefail 

Related issue: https://issues.redhat.com/browse/KEYCLOAK-12896