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This tutorial goes through launching Keycloak using Postgres as the database in separate containers using Docker compose. This tutorial assumes the following:
We will first create a docker compose file like the following (feel free to copy for your own purposes).
nano compose.yaml
This will enter the nano editor in the terminal, enter:
version: '3.8' #latest version of docker compose
services:
postgres:
image: postgres:latest
environment:
POSTGRES_DB: keycloak
POSTGRES_USER: keycloak
POSTGRES_PASSWORD: password
volumes:
- postgres_data:/var/lib/postgresql/data
networks:
- keycloak_network
keycloak:
image: quay.io/keycloak/keycloak:latest
environment:
KC_DB: postgres
KC_DB_URL_HOST: postgres
KC_DB_URL_DATABASE: keycloak
KC_DB_USERNAME: keycloak
KC_DB_PASSWORD: password
KEYCLOAK_ADMIN: admin
KEYCLOAK_ADMIN_PASSWORD: admin
KC_LOG_LEVEL: ALL
ports:
- 8080:8080
depends_on:
- postgres
networks:
- keycloak_network
command: ["start-dev"]
networks:
keycloak_network:
volumes:
postgres_data:
#this is not the cleanest compose file I realize :)
Then after you enter the above file into your compose.yaml file CTRL + O and then Enter saves the file and CTRL + X exits.
Next we will run the compose.yaml file via the following command:
docker-compose up -d
You can verify the compose.yaml file executed successfully and view logs via the following commands:
docker ps # this will display all active docker containers
docker-compose logs keycloak # displays logs related to keycloak
docker-compose logs postgres # displays logs related to the postgres db
Next we will log into the PostgreSQL server and ensure that keycloak successfully initialized the db
docker exec -it <keycloak_ps_name> psql -U keycloak # find the <keycloak_ps_name> by running docker ps and finding the name of the keycloak instance
\d /* returns the databases including templates, default postgres, and the keycloak db we created */
\dt /* lists the tables */
If when you run \dt it returns a list of tables then keycloak has initialized the db correctly and you are good to go!
Walter Miely is a tech entrepreneur and CEO of Phoenix Ignited Tech You can find him on Linkedin. This material is licensed under the CC BY 4.0 License LEGAL DISCLAIMER: The content provided here is provided AS IS, and part of, or the entirety of this content may be incorrect. Please read the entireLegal Disclaimer here.
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