Keycloak

apt update; apt list --upgradable; cd /opt/
wget https://github.com/keycloak/keycloak/releases/download/12.0.3/keycloak-12.0.3.tar.gz
tar -xvzf keycloak-12.0.3.tar.gz
mv keycloak-12.0.3 keycloak

Permission

groupadd keycloak
useradd -r -g keycloak -d /opt/keycloak -s /sbin/nologin keycloak
chown -R keycloak: /opt/keycloak/
chmod o+x /opt/keycloak/bin/
mkdir /etc/keycloak

cp /opt/keycloak/docs/contrib/scripts/systemd/wildfly.conf /etc/keycloak/keycloak.conf
cp /opt/keycloak/docs/contrib/scripts/systemd/launch.sh /opt/keycloak/bin/
chown keycloak: /opt/keycloak/bin/launch.sh
nano /opt/keycloak/bin/launch.sh

Config

#!/bin/bash

if [ "x$WILDFLY_HOME" = "x" ]; then
    WILDFLY_HOME="/opt/keycloak"
fi

if [[ "$1" == "domain" ]]; then
    $WILDFLY_HOME/bin/domain.sh -c $2 -b $3
else
   #$WILDFLY_HOME/bin/standalone.sh -c $2 -b $3
   $WILDFLY_HOME/bin/standalone.sh -c $2 -b $3 -bmanagement=0.0.0.0
fi

Service

cp /opt/keycloak/docs/contrib/scripts/systemd/wildfly.service /etc/systemd/system/keycloak.service
nano /etc/systemd/system/keycloak.service

[Unit]
Description=The Keycloak Application Server
After=syslog.target network.target
Before=httpd.service

[Service]
Environment=LAUNCH_JBOSS_IN_BACKGROUND=1
EnvironmentFile=/etc/keycloak/keycloak.conf
User=keycloak
Group=keycloak
LimitNOFILE=102642
PIDFile=/var/run/keycloak/keycloak.pid
ExecStart=/opt/keycloak/bin/launch.sh $WILDFLY_MODE $WILDFLY_CONFIG $WILDFLY_BIND
StandardOutput=null

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable keycloak
systemctl start keycloak

systemctl status keycloak
tail -f /opt/keycloak/standalone/log/server.log

ssh [email protected] -L 8080:localhost:8080 -L 9990:localhost:9990
http://localhost:8080/
http://localhost:9990/

References

Keycloak Embedded in a Spring Boot Application Securing Spring Boot REST APIs with Keycloak WildFly Management User vs Application User Server Installation and Configuration Guide Setup Keycloak Server on Ubuntu 18.04 Using JWT with Spring Security OAuth Getting Started with WildFly 22 Keycloak Admin REST API Keycloak Downloads Keycloak WildFly