Ensure you have JDK 8 (or newer), Maven 3.5.4 (or newer) and Git installed
java -version
mvn -version
git --version
First clone the Keycloak repository:
git clone https://github.com/keycloak/keycloak.git
cd keycloak
To build Keycloak run:
mvn clean install
This will build all modules and run the testsuite.
To build the ZIP distribution run:
mvn clean install -Pdistribution
Once completed you will find distribution archives in distribution.
To build only the server run:
mvn -Pdistribution -pl distribution/server-dist -am -Dmaven.test.skip clean install
NOTE
Classes from org.keycloak.testsuite.* packages aren't suitable to be used in production.
To start Keycloak during development first build as specified above, then run:
mvn -f testsuite/utils/pom.xml exec:java -Pkeycloak-server
When running testsuite, by default an account with username admin and password admin will be created within the master realm at start.
To start Keycloak from the server distribution first build the distribution it as specified above, then run:
tar xfz distribution/server-dist/target/keycloak-<VERSION>.tar.gz
cd keycloak-<VERSION>
bin/standalone.sh
To stop the server press Ctrl + C.
We don't currently enforce a code style in Keycloak, but a good reference is the code style used by WildFly. This can be retrieved from Wildfly ide-configs.To import formatting rules, see following instructions.
If your changes require updates to the database read Updating Database Schema.
If your changes require introducing new dependencies or updating dependency versions please discuss this first on the dev mailing list. We do not accept new dependencies to be added lightly, so try to use what is available.