tomcat 8 centos 6.7

## screen -U -S tomcat8-screen
## yum update

INSTALL JAVA 8

Download the latest JAVA 8 from here or use the following command to download JAVA JDK 8u5:

for 32bit systems use:

## wget --no-cookies \
--no-check-certificate \
--header "Cookie: oraclelicense=accept-securebackup-cookie" \
"http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-i586.rpm" \
-O /opt/jdk-8-linux-i586.rpm

for 64bit systems use:

## wget --no-cookies \
--no-check-certificate \
--header "Cookie: oraclelicense=accept-securebackup-cookie" \
"http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-x64.rpm" \
-O /opt/jdk-8-linux-x64.rpm

once the JAVA package has been downloaded, install it using rpm as follows:

for 32bit systems use:

## rpm -Uvh /opt/jdk-8-linux-i586.rpm

for 64bit systems use:

## rpm -Uvh /opt/jdk-8-linux-x64.rpm

CONFIGURE JAVA

configure the newly installed JAVA package using alternatives as in:

## alternatives --install /usr/bin/java java /usr/java/jdk1.8.0_05/jre/bin/java 20000
## alternatives --install /usr/bin/jar jar /usr/java/jdk1.8.0_05/bin/jar 20000
## alternatives --install /usr/bin/javac javac /usr/java/jdk1.8.0_05/bin/javac 20000
## alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.8.0_05/jre/bin/javaws 20000
## alternatives --set java /usr/java/jdk1.8.0_05/jre/bin/java
## alternatives --set javaws /usr/java/jdk1.8.0_05/jre/bin/javaws
## alternatives --set javac /usr/java/jdk1.8.0_05/bin/javac
## alternatives --set jar /usr/java/jdk1.8.0_05/bin/jar

check the JAVA version running on your system:

## java -version

INSTALL TOMCAT 8

Create a separate user which will run the Tomcat server:

## useradd -r tomcat8 --shell /bin/false

Download the latest Tomcat 8 version from here or use the following command to download Tomcat 8.0.5

## wget http://mirrors.koehn.com/apache/tomcat/tomcat-8/v8.0.5/bin/apache-tomcat-8.0.5.tar.gz -P /tmp

Extract the contents of the Tomcat archive to /opt using the following command:

## tar -zxf /tmp/apache-tomcat-8.0.5.tar.gz -C /opt

## ln -s /opt/apache-tomcat-8.0.5 /opt/tomcat-latest
## chown -hR tomcat8: /opt/tomcat-latest /opt/apache-tomcat-8.0.5

START THE TOMCAT 8 SERVICE

Create the following init script in /etc/init.d/tomcat8

#!/bin/bash
#
# tomcat8
#
# chkconfig: - 80 20
#
### BEGIN INIT INFO
# Provides: tomcat8
# Required-Start: $network $syslog
# Required-Stop: $network $syslog
# Default-Start:
# Default-Stop:
# Description: Tomcat 8
# Short-Description: start and stop tomcat
### END INIT INFO

## Source function library.
#. /etc/rc.d/init.d/functions
export JAVA_HOME=/usr/java/default
export JAVA_OPTS="-Dfile.encoding=UTF-8 \
  -Dnet.sf.ehcache.skipUpdateCheck=true \
  -XX:+UseConcMarkSweepGC \
  -XX:+CMSClassUnloadingEnabled \
  -XX:+UseParNewGC \
  -XX:MaxPermSize=128m \
  -Xms512m -Xmx512m"
export PATH=$JAVA_HOME/bin:$PATH
TOMCAT_HOME=/opt/tomcat-latest
TOMCAT_USER=tomcat8
SHUTDOWN_WAIT=20

tomcat_pid() {
  echo `ps aux | grep org.apache.catalina.startup.Bootstrap | grep -v grep | awk '{ print $2 }'`
}

start() {
  pid=$(tomcat_pid)
  if [ -n "$pid" ] 
  then
    echo "Tomcat is already running (pid: $pid)"
  else
    # Start tomcat
    echo "Starting tomcat"
    ulimit -n 100000
    umask 007
    /bin/su -p -s /bin/sh $TOMCAT_USER $TOMCAT_HOME/bin/startup.sh
  fi


  return 0
}

stop() {
  pid=$(tomcat_pid)
  if [ -n "$pid" ]
  then
    echo "Stoping Tomcat"
    /bin/su -p -s /bin/sh $TOMCAT_USER $TOMCAT_HOME/bin/shutdown.sh

    let kwait=$SHUTDOWN_WAIT
    count=0;
    until [ `ps -p $pid | grep -c $pid` = '0' ] || [ $count -gt $kwait ]
    do
      echo -n -e "\nwaiting for processes to exit";
      sleep 1
      let count=$count+1;
    done

    if [ $count -gt $kwait ]; then
      echo -n -e "\nkilling processes which didn't stop after $SHUTDOWN_WAIT seconds"
      kill -9 $pid
    fi
  else
    echo "Tomcat is not running"
  fi
 
  return 0
}

case $1 in
start)
  start
;; 
stop)   
  stop
;; 
restart)
  stop
  start
;;
status)
  pid=$(tomcat_pid)
  if [ -n "$pid" ]
  then
    echo "Tomcat is running with pid: $pid"
  else
    echo "Tomcat is not running"
  fi
;; 
esac    
exit 0

make the script executable using chmod

## chmod +x /etc/init.d/tomcat8

Start the Tomcat 8 server using:

## service tomcat8 start

Add the Tomcat 8 service to system startup:

## chkconfig tomcat8 on

Access your newly installed Tomcat at http://YOUR_IP:8080