Can't access tomcat server on centOS VPS

Question

I got VPS (Virtual Private Server). and I want to install apache-tomcat with this server. the server's OS is CentOS 64bit. I installed through beneath steps.

Step 1. Installing JDK

    cd /usr/tmp
    wget http://download.oracle.com/otn-pub/java/jdk/8u51-b16/jdk-8u51-linux-x64.rpm
    rpm -Uvh jdk-8u51-linux-x64.rpm 

Step 2. Installing Tomcat

wget http://apache.tt.co.kr/tomcat/tomcat-8/v8.0.24/bin/apache-tomcat-8.0.24.tar.gz
tar xvfpz apache-tomcat-8.0.24.tar.gz
mv apache-tomcat-8.0.24 /usr/local/tomcat

Step 3. Adding tomcat service wrote beneath shell code and save into /etc/rc.d/init.d/ and change permission by 'chmod 755 /etc/rc.d/init.d/tomcat'

#!/bin/sh
# Startup script for Tomcat
#
# chkconfig: 35 85 15
# description: apache tomcat 6.x
#
# processname: tomcat
#
# Source function library.
export JAVA_HOME=/usr/java/default
export CATALINA_HOME=/usr/local/tomcat
export PATH=$PATH:$JAVA_HOME/bin:$CATALINA_HOME/bin
# See how we were called.
case "$1" in
start)
echo -n "Starting tomcat: "
$CATALINA_HOME/bin/catalina.sh start
echo
;;
stop)
echo -n "Shutting down tomcat: "
$CATALINA_HOME/bin/catalina.sh stop
echo
;;
restart)
$0 stop
sleep 2
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart}"
exit 1
esac
exit 0

Step 4. Run service

chkconfig –add tomcat
service tomcat start

But... I couldn't see cat on server:8080... So I found some document saying open 8080 port on iptables. so I adding this quote

-A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT

But things not changed. still I can't access this server at externally. Even if I stop iptables, iptables6, Can't acess.

Server IP : 168.92.122.39   Domain : 39.vs.woobi.co.kr
FTP 182.162.94.35:53921 -> 192.168.122.39:21
SSH 182.162.94.35:53922 -> 192.168.122.39:22
MYSQL 182.162.94.35:53906 -> 192.168.122.39:3306

I don't know what is problem. I spend so many time with this. please help me!

Answer 1

Instead of using the iptables command you specified, try the firewall-cmd command (CentOS 7) or lokkit (CentOS 6)

# CentOS 6
lokkit -p 8080:tcp

# CentOS 7
firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --reload

Also check the documentation of your VPS provider. It may be that you must open/forward the port in their user interface as well. I know for example that Amazon requires this.