Linux | Configure Tomcat service in linux

Author - Navneet Kashyap

Running Tomcat as a service in Linux:

For security reasons you should not run Tomcat as root service. It is better to create a new user and run Tomcat under it.

Create a file with the script:

$ sudo vi /etc/init.d/tomcat

(add following and set path of tomcat home directory):

#!/bin/sh
### BEGIN INIT INFO
# Provides:      	tomcat
# Required-Start:	$remote_fs $syslog
# Required-Stop: 	$remote_fs $syslog
# Default-Start: 	2 3 4 5
# Default-Stop:  	0 1 6
# Short-Description: Start and stop Apache Tomcat
# Description:   	Enable Apache Tomcat service provided by daemon.
### END INIT INFO
ECHO=/bin/echo
TEST=/usr/bin/test
TOMCAT_USER=openkm
TOMCAT_HOME=/home/openkm/tomcat-8.0.32
TOMCAT_START_SCRIPT=$TOMCAT_HOME/bin/startup.sh
TOMCAT_STOP_SCRIPT=$TOMCAT_HOME/bin/shutdown.sh
$TEST -x $TOMCAT_START_SCRIPT || exit 0
$TEST -x $TOMCAT_STOP_SCRIPT || exit 0
start()
{
$ECHO -n "Starting Tomcat"
su - $TOMCAT_USER -c "$TOMCAT_START_SCRIPT &"
$ECHO "."
}
stop()
{
$ECHO -n "Stopping Tomcat"
su - $TOMCAT_USER -c "$TOMCAT_STOP_SCRIPT 60 -force &"
while [ "$(ps -fu $TOMCAT_USER | grep java | grep tomcat | wc -l)" -gt "0" ]; do
sleep 5; $ECHO -n "."
done
$ECHO "."
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
sleep 30
start
;;
*)
$ECHO "Usage: tomcat {start|stop|restart}"
exit 1
esac
exit 0

Make it executable with this command:

$ sudo chmod 755 /etc/init.d/tomcat

update the run-levels:

$ sudo update-rc.d tomcat defaults
Adding system startup for /etc/init.d/tomcat ...
/etc/rc0.d/K20tomcat -> ../init.d/tomcat
/etc/rc1.d/K20tomcat -> ../init.d/tomcat
/etc/rc6.d/K20tomcat -> ../init.d/tomcat
/etc/rc2.d/S20tomcat -> ../init.d/tomcat
/etc/rc3.d/S20tomcat -> ../init.d/tomcat
/etc/rc4.d/S20tomcat -> ../init.d/tomcat
/etc/rc5.d/S20tomcat -> ../init.d/tomcat

If above commands do not work you can also try this:

sudo ln -s /etc/init.d/tomcat /etc/rc1.d/K99tomcat
sudo ln -s /etc/init.d/tomcat /etc/rc2.d/S99tomcat

Start Tomcat service:

$ sudo service tomcat start

Stop Tomcat service:

$ sudo service tomcat stop

It is a good idea to configure Tomcat memory utilization by simply creating a setenv.sh file in Tomcat home folder and add following directives:

$ sudo vi /opt/tomcat/bin/setenv.sh

export JAVA_OPTS="-Xms1024m -Xmx1024m -XX:NewSize=256m -XX:MaxNewSize=356m -XX:PermSize=256m -XX:MaxPermSize=356m"

export CATALINA_PID="$CATALINA_HOME/catalina_pid.txt"
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