How can I change the default port (8080) on Amazon EC to port 80

I tried to change the default port on my Tomcat, with 开发者_如何学Cthe server.xml file, changing 8080 to 80. But when I try to visit my application, it is not available. What am I doing wrong? Are there some security issues with Amazon EC2?

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There are several ways to make Tomcat listen on port 80, but not all of them are available on all flavors of Linux.

For details and pointers, see the section Running Tomcat on port 80 in my series of articles on Tomcat on EC2.

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Switch to root user via sudo su - command. In /usr/share/tomcat7/conf/tomcat7.conf change TOMCAT_USER="tomcat" to TOMCAT_USER="root". In /usr/share/tomcat7/conf/server.xml change 8080 to 80 (and also 8443 to 443 if you’re a perfectionist).

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Are you running Tomcat as root? Only root can open port 80. Check if can you access the port locally - eg. try wget http://localhost/ . Obviously check also if your security group allows access to port 80, but I expect it does if 8080 was available.

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To enable this on AWS for tomcat 7.0.33 I modified server.xml as suggested above.

Then update /etc/tomcat/tomcat.conf. sudo vi /etc/tomcat/tomcat.conf
change TOMCAT_USER="tomcat" to "root"
bounce the server with sudo service tomcat restart

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you can use load balancer or set up port forwarding on the linux built in firwall

see this blog

http://charlie.cu.cc/2012/04/how-run-tomcat-port-80-amazon-web-service-aws/

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I had the same issue. if you configure the server.xml and open port 80 in ec2 what you have to do is first shutdown the server. be root (sudo su -) and then start the server again and it should work for you.