Keycloak 10 partially starts when run as a service - keycloak

Question

I have currently installed Keycloak 10.0.2 in domain mode with two servers on Ubuntu 18.04. When running manually as ./domain.sh --host-config=host-master.xml all the services start normally and the system works fine.
I wanted to run Keycloak as a service and followed the steps given in https://medium.com/#hasnat.saeed/setup-keycloak-server-on-ubuntu-18-04-ed8c7c79a2d9. The problem is that the service shows as Active but navigating to the management URL results The site can't be reached error. I checked the generated log file and it seems that the services have started only partially.
2020-06-26 12:53:52,164 INFO [org.jboss.as] (Controller Boot Thread) WFLYSRV0025: Keycloak 10.0.2 (WildFly Core 11.1.1.Final) (Host Controller) started in 12675ms - Started 83 of 86 services (28 services are lazy, passive or on-demand)
2020-06-26 12:53:52,238 INFO [org.jboss.as.host.controller] (server-registration-threads - 1) WFLYHC0020: Registering server server-one
Whereas when run manually I see that there are many more services that have started.
[Server:server-one] 13:44:34,349 INFO [org.jboss.as.server] (ServerService Thread Pool -- 36) WFLYSRV0010: Deployed "keycloak-server.war" (runtime-name : "keycloak-server.war")
[Server:server-one] 13:44:34,463 INFO [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0212: Resuming server
[Server:server-one] 13:44:34,475 INFO [org.jboss.as] (Controller Boot Thread) WFLYSRV0025: Keycloak 10.0.2 (WildFly Core 11.1.1.Final) started in 30123ms - Started 673 of 979 services (703
services are lazy, passive or on-demand)
Not sure what is going wrong. Need help resolving the issue.
Here are my configuration details:
Service Details
keycloak.service - Keycloak Authentication Server
Loaded: loaded (/etc/systemd/system/keycloak.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2020-06-26 13:47:12 UTC; 2min 23s ago
Main PID: 116569 (launch.sh)
Tasks: 187 (limit: 9479)
CGroup: /system.slice/keycloak.service
├─116569 /bin/bash /data/keycloak/bin/launch.sh domain domain.xml host-master.xml 0.0.0.0 YES
├─116578 /bin/sh /data/keycloak/bin/domain.sh -c domain.xml --host-config=host-master.xml
/etc/keycloak/keycloak.conf
# The mode you want to run
WILDFLY_MODE=domain
# The configuration you want to run
WILDFLY_DOMAIN_CONFIG=domain.xml
# Host configuration
WILDFLY_HOST_CONFIG=host-master.xml
# The address to bind to
WILDFLY_BIND=0.0.0.0
# Whether this host is a domain controller. If not run with --backup switch
IS_DC=YES
/data/keycloak/bin/launch.sh
#!/bin/bash
WILDFLY_HOME="/data/keycloak"
if [[ "$1" == "domain" ]]; then
if [[ "$5" == "YES" ]]; then
$WILDFLY_HOME/bin/domain.sh -c $2 --host-config=$3
else
$WILDFLY_HOME/bin/domain.sh -c $2 --host-config=$3 --backup
fi
else
$WILDFLY_HOME/bin/standalone.sh -c $2 -b $4
fi
/etc/systemd/system/keycloak.service
[Unit]
Description=Keycloak Authentication 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=/data/keycloak/bin/launch.sh $WILDFLY_MODE $WILDFLY_DOMAIN_CONFIG $WILDFLY_HOST_CONFIG $WILDFLY_BIND $IS_DC
StandardOutput=null
[Install]
WantedBy=multi-user.target

Answer 1

I also followed the same Medium tutorial and faced the same issue as you. Turns out that I have to run the service as root user instead of keycloak user. I have no idea why though.