Configuring Tomcat with Ubuntu 16.04

Trials and tribulations of installing Tomcat7 latest

Configuring Tomcat with Ubuntu 16.04

This post details some issues encountered when installing Tomcat web server from package onto Ubuntu 16.04.

When running the standard sudo apt-get install tomcat7 command, Tomcat is downloaded and unpackaged however it fails to complete the install and produces this error:

Setting up tomcat7 (7.0.26-1ubuntu1.1) ...  
chmod: cannot access `/etc/tomcat7/tomcat-users.xml': No such file or directory  
dpkg: error processing tomcat7 (--configure):  
 subprocess installed post-installation script returned error exit status 1  
No apport report written because MaxReports is reached already  
 >Errors were encountered while processing:  
E: Sub-process /usr/bin/dpkg returned an error code (1)

This is caused by improper permissions group assignment of the Tomcat config file. To resolve this I simply removed the file sudo rm /etc/tomcat7/tomcat-users.xml and then re-ran the installation again.

I thought I was out of the woods but then after re-installing I got a new error with exit status 1. After checking the journalctl I discovered that Tomcat could not find the default locations for Java and was searching for OpenJava other locations.
Which was strange because JAVA_HOME was set on my environment but not in my bash config. The solution as was identified on StackOverflow is the following.

gksudo gedit /etc/default/tomcat7

Inside the editor look for the commented out line for JAVA_HOME, then specify it to your Oracle Java location which is normally /usr/lib/jvm/java-8-oracle.

After saving this change and restarting Tomcat, you should be cooking with gas!