Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Running Tomcat on Port 80 in a User Account

DZone's Guide to

Running Tomcat on Port 80 in a User Account

· Integration Zone ·
Free Resource

The new Gartner Critical Capabilities report explains how APIs and microservices enable digital leaders to deliver better B2B, open banking and mobile projects.

If you already have a servlet container and also need a web server, there is usually no need to turn to a dedicated web server such as Apache. Instead, your servlet container can easily perform double duty, by putting your HTML files into the “ROOT” web application. If you run Tomcat on Linux, you have two choices: First, run it on a user account. Then you can only use “non-privileged” ports which start at 1024 (this is why Tomcat’s default is to use port 8080). Second, run it on a root account, but that poses security risks. There are many solutions out there for running Tomcat on port 8080 on a user account. The simplest solution that I have found is to use authbind. To do so, you need to perform the following steps:

Step 1:
Install authbind

Step 2:
Make port 80 available to authbind (you need to be root)

touch /etc/authbind/byport/80chmod 500 /etc/authbind/byport/80chown glassfish /etc/authbind/byport/80

Step 3: Make IPv4 the default (authbind does not currently support IPv6). To do so, create the file TOMCAT/bin/setenv.sh with the following content:

CATALINA_OPTS="-Djava.net.preferIPv4Stack=true"

Step 4: Change startup.sh

exec authbind --deep "$PRGDIR"/"$EXECUTABLE" start "$@"# OLD: exec "$PRGDIR"/"$EXECUTABLE" start "$@"

From http://2ality.blogspot.com/2010/07/running-tomcat-on-port-80-in-user.html

The new Gartner Critical Capabilities for Full Lifecycle API Management report shows how CA Technologies helps digital leaders with their B2B, open banking, and mobile initiatives. Get your copy from CA Technologies.

Topics:
java ,server-side

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}