Installing Tomcat as a service - 6.2

Installing the service on RedHat/CentOS 7 Systems

All the following commands have to be executed with super-user privileges.

1. Create the service file with the following command:

   touch /etc/systemd/system/tomcat.service

2. Assign the relevant rights to the file you created:

   chmod 664 /etc/systemd/system/tomcat.service

3. Paste the following content in the file while adapting it to your configuration:

   [Unit]
   Description=Apache Tomcat Web Application Container
   After=syslog.target network.target
   
   [Service]
   Type=forking
   
   Environment=JAVA_HOME=/usr/lib/jvm/jre
   Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
   Environment=CATALINA_HOME=/opt/tomcat
   Environment=CATALINA_BASE=/opt/tomcat
   Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC'
   Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'
   
   ExecStart=/opt/tomcat/bin/startup.sh
   ExecStop=/bin/kill -15 $MAINPID
   
   [Install]
   WantedBy=multi-user.target

4. Reload the service daemon:

   systemctl daemon-reload

5. Start the service:

   systemctl start tomcat.service

Installing the service on RedHat/CentOS 6 and Ubuntu Systems

1. Create/Copy the following script to the /etc/init.d/tomcat file:

   # chkconfig: 345 91 10
   # description: Starts and stops the Tomcat daemon.
   #
   
   # Source function library.
   . /etc/rc.d/init.d/functions
   
   # Get config.
   . /etc/sysconfig/network
   
   # Check that networking is up.
   [ "${NETWORKING}" = "no" ] && exit 0
   
   user=cxp
   tomcat=/u/bin/Tomcat/apache-tomcat-8.0.33/
   startup=$tomcat/bin/startup.sh
   shutdown=$tomcat/bin/shutdown.sh
   #export JAVA_HOME=/usr/local/java
   
   status(){
   ps ax --width=1000 | grep "[o]rg.apache.catalina.startup.Bootstrap start"
   | awk '{printf $1 " "}' | wc | awk
   '{print $2}' > /tmp/tomcat_process_count.txt
   read line < /tmp/tomcat_process_count.txt
   if [ $line -gt 0 ]; then
   echo -n "tomcat ( pid "
   ps ax --width=1000 | grep "[o]rg.apache.catalina.startup.Bootstrap start"
   | awk '{printf $1 " "}'
   echo -n ") is running..."
   echo
   else
   echo "Tomcat is stopped"
   fi
   }
   
   start(){
    echo -n $"Starting Tomcat service: "
    #daemon -c
    su - $user -c "$startup" 
    RETVAL=$?
    echo
   }
   
   stop(){
    action $"Stopping Tomcat service: " su - $user "$shutdown"
    RETVAL=$?
    echo
   }
   
   restart(){
     stop
     start}

   # See how we were called.
   case "$1" in
   start)
    start
    ;;
   stop)
    stop
    ;;
   status)
         
    status tomcat
    ;;
   restart)
    restart
    ;;
   *)
    echo $"Usage: $0 {start|stop|status|restart}"
    exit 1
   esac
   
   exit 0

2. Edit the user and tomcat variable values in the script to match your configuration.

3. To make sure that the script is executable, type:

   # chmod 0755 /etc/init.d/tomcat

4. Type in:

   chkconfig --list

   chkconfig --add tomcat

   Now, you can test this self-defined service.