I'm trying to install liferay on a Ubuntu server. I'm folowing this tutorialInstallation and Configuration of a Liferay Portal on a Ubuntu Server
when I finished, I tryed to start the server by executing ./startup.sh.
I got this error in yhe log file: catalina.out:
Java.net.BindException: Adress Already in use <null>:8080
This means some other application/service is using the same port which is causing a conflict. So change the tomcats default HTTP port from 8080 to something else, like 8081 for example. Restart your server after this change.
It's in /tomcat-home/conf/server.xml
Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" URIEncoding="UTF-8" />