Thursday, 22 October 2015

How to install Tomcat 7 on RHEL7/Centos7



Step 1: Java installation: Installation step you can find here.

Step 2: Installation Tomcat 7: Download tar file from Apache tomcat official site

Step 3: Copy that downloaded file in /opt/ and Extract here as shown below:

[root@linuxcnf ~]# cd /opt/
[root@linuxcnf opt]# ls
apache-tomcat-7.0.86.tar.gz 
[root@linuxcnf opt]# tar zxvf apache-tomcat-7.0.86.tar.gz 
[root@linuxcnf opt]# mv apache-tomcat-7.0.86 /usr/local/tomcat7

Step 4: Set environment variables

[root@linuxcnf ~]# vi /etc/profile
# add following lines into the end of the file
export CATALINA_HOME/usr/local/tomcat7
export PATH=/usr/local/tomcat7/bin:$PATH
:wq
[root@linuxcnf ~]# source /etc/profile

Step 5: Verify environment variables setting:

[root@linuxcnf ~]# echo $CATALINA_HOME
/usr/local/tomcat7

Step 6: Add user for tomcat authentication:

[root@linuxcnf ~]# vi $CATALINA_HOME/conf/tomcat-users.xml
#Add this below lines in the file after --> and before this line "</tomcat-users>" in tomcat users section.
<role rolename="manager-gui"/>
  <role rolename="manager-status"/>
  <role rolename="manager-script"/>
  <role rolename="manager-jmx"/>
  <role rolename="admin"/>
<user username="username" password="password" roles="manager-gui,manager-
                        script,manager-status,manager-jmx,admin"/>
:wq

Step 7: Create a service scrip to auto start the server after reboot:

[root@linuxcnf ~]# vi /etc/rc.d/init.d/tomcat
#!/bin/bash
# Tomcat: Start/Stop Tomcat
. /etc/init.d/functions
. /etc/sysconfig/network
CATALINA_HOME=/usr/local/tomcat7
LOCKFILE=/var/lock/subsys/tomcat7
RETVAL=0
start(){
    echo "Starting Tomcat7: "
$CATALINA_HOME/bin/startup.sh
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch $LOCKFILE
    return $RETVAL
}
stop(){
    echo "Shutting down Tomcat7: "
    $CATALINA_HOME/bin/shutdown.sh
    RETVAL=$?
echo
    [ $RETVAL -eq 0 ] && rm -f $LOCKFILE
    return $RETVAL
}
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        start
        ;;
    *)
        echo $"Usage: $0 {start|stop|restart}"
        exit 1
        ;;
esac
exit $?
:wq
 [root@linuxcnf ~]# chmod 755 /etc/rc.d/init.d/tomcat

[root@linuxcnf ~]# /etc/rc.d/init.d/tomcat start 
Starting Tomcat7:                                                        [ok]
 [root@linuxcnf ~]# chkconfig tomcat on
  

Step 8: Configure firewall to access tomcat service

[root@linuxcnf ~]# firewall-cmd –permanent --add-port=8080/tcp
[root@linuxcnf ~]# firewall-cmd --reload

Tomcat 7 installation and configuration done. For verification start a Web browser and put server ip or host name and port no. e.g. localhost:8080.

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