Keycloak Docker Deployment - docker

Question

I tried to deploy Keycloak and it's database via Docker (Docker-Compose).
It retries 10 times, then failes the deployment. The same docker-compose.yml file worked for me in the past. Haven't done any OS or contianer updates since.
The the following error and warning is thrown:
keycloak | 09:48:42,070 ERROR [org.jgroups.protocols.TCP] (ServerService Thread Pool -- 60) JGRP000034: cff2ce8f5cdf: failure sending message to e832b25e9785: java.net.SocketTimeoutException: connect timed out
keycloak | 09:48:45,378 WARN [org.jgroups.protocols.pbcast.GMS] (ServerService Thread Pool -- 60) cff2ce8f5cdf: JOIN(cff2ce8f5cdf) sent to 05bdb7a4a7f5 timed out (after 3000 ms), on try 0
My docker-compose.yml looks like this:
keycloak:
container_name: keycloak
image: jboss/keycloak:11.0.2
ports:
- 8081:8080
environment:
- DB_VENDOR=mariadb
- DB_ADDR=authenticationDB
- DB_DATABASE=keycloak
- DB_USER=keycloak
- DB_PASSWORD=password
- KEYCLOAK_USER=admin
- KEYCLOAK_PASSWORD=admin
- JGROUPS_DISCOVERY_PROTOCOL=JDBC_PING
- JGROUPS_DISCOVERY_PROPERTIES=datasource_jndi_name=java:jboss/datasources/KeycloakDS,info_writer_sleep_time=500
depends_on:
- authenticationDB
authenticationDB:
container_name: authenticationDB
image: mariadb
volumes:
- ./keycloakDB:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: keycloak
MYSQL_USER: keycloak
MYSQL_PASSWORD: password
healthcheck:
test: ["CMD", "mysqladmin", "ping", "--silent"]
I've tried following:
SSH into Keycloak's container and curl authenticationDB:3306. I've got a no permission error so the container could talk to each other.
Check if the database is running inside the DB-Container and yes, it's running.
I am running out of ideas.
Normally it retried 10 times, and then successfully deployed keycloak.
Thanks in advance,
Rosario

Answer 1

I would say that docker image jboss/keycloak:11.0.2 doesn't support JDBC_PING:
$ docker run --rm --entrypoint bash -ti jboss/keycloak:11.0.2 \
-c 'ls -lah /opt/jboss/tools/cli/jgroups/discovery/'
total 4.0K
drwxrwxr-x. 1 jboss root 25 Sep 15 09:01 .
drwxrwxr-x. 1 jboss root 23 Sep 15 09:01 ..
-rw-rw-r--. 1 jboss root 611 Sep 15 09:01 default.cli
vs
$ docker run --rm --entrypoint bash -ti jboss/keycloak:12.0.2 \
-c 'ls -lah /opt/jboss/tools/cli/jgroups/discovery/'
total 8.0K
drwxrwxr-x. 1 jboss root 46 Jan 19 07:27 .
drwxrwxr-x. 1 jboss root 23 Jan 19 07:27 ..
-rw-rw-r--. 1 jboss root 611 Jan 19 07:27 default.cli
-rw-rw-r--. 1 jboss root 605 Jan 19 07:27 JDBC_PING.cli
Try to test newer version.