We need total three servers.

1. WebServer

2. AppServer

3. DBServer

1. Install Web Server

# yum install httpd -y
# systemctl enable httpd
# systemctl start httpd

Open this server over browser wiht external ip address.

2. Install App Server.

# cd /root
# wget http://www-us.apache.org/dist/tomcat/tomcat-9/v9.0.10/bin/apache-tomcat-9.0.10.tar.gz
# tar -xf apache-tomcat-9.0.10.tar.gz
# cd apache-tomcat-9.0.10/webapps
# wget https://github.com/citb30/project-1/raw/master/student.war
# cd /root/apache-tomcat-9.0.10/bin
# sh startup.sh
# tail -f /root/apache-tomcat-9.0.10/logs/catalina.out