I am very sure I have installed jdk11, but when i start the hivemq by systemctl start hivemq, this error is always printed.
Here is how i configured java :
export JAVA_HOME=/usr/lib/jvm/jdk-11.0.7
export PATH=$JAVA_HOME/bin:$PATH
export HIVEMQ_HOME=/opt/hivemq
export HIVEMQ_USER=root
[root@paasm1 ~]# which java
/usr/lib/jvm/jdk-11.0.7/bin/java
[root@paasm1 ~]#
[root@paasm1 ~]# java -version
java version "11.0.7" 2020-04-14 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.7+8-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.7+8-LTS, mixed mode)
And here is the hivemq environment:
wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww [root@paasm1 ~]# cat /etc/systemd/system/hivemq.service
[Unit]
Description=HiveMQ Community Edition
After=network.target
[Service]
Group=root
User=root
LimitNOFILE=infinity
StandardOutput=null
StandardError=journal
WorkingDirectory=/opt/hivemq
ExecStart=/opt/hivemq/bin/run.sh
KillMode=process
Restart=always
KillSignal=15
SuccessExitStatus=143
TimeoutStopSec=3600
[Install]
WantedBy=multi-user.target
[root@paasm1 ~]# cat /etc/init.d/hivemq
#!/bin/bash
# Copyright 2019 dc-square GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# chkconfig: 35 90 12
# description: HiveMQ start script
#
# Set HiveMQ Home to correct path, default is /opt/hivemq
HIVEMQ_HOME=/opt/hivemq
HIVEMQ_USER=root
#
# Get function from functions library
. /etc/init.d/functions
# Start the service HiveMQ
start() {
if ps ax | grep -v "grep" | grep -q hivemq.jar ; then
echo -n HiveMQ server already running
failure $"HiveMQ start"
echo; else
echo -n Starting HiveMQ server
$HIVEMQ_HOME/bin/run.sh >/dev/null 2>&1 &
### Create the lock file ###
touch /var/lock/subsys/hivemq
success $"HiveMQ server started"
echo; fi
}
# Restart the service HiveMQ
stop() {
echo -n Stopping HiveMQ server
#killproc hivemq
pkill -f hivemq.jar
#wait for cleanups
while ps ax | grep -v "grep" | grep -q hivemq.jar;
do
sleep 1
done
##
if ps ax | grep -v "grep" | grep -q hivemq.jar ; then failure $"HiveMQ shutdown"; else success $"HiveMQ shutdown"; fi
### Now, delete the lock file ###
rm -f /var/lock/subsys/hivemq
echo
}
# Echo the current status of HiveMQ
status() {
if ps ax | grep -v "grep" | grep -q hivemq.jar ; then echo HiveMQ is running; else echo HiveMQ stopped; fi
}
### main logic ###
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload|condrestart)
stop
start
;;
status)
status
;;
*)
echo $"Usage: $0 {start|stop|restart|reload}"
exit 1
esac
exit 0
[root@paasm1 ~]#