I have tomcat running on an ubuntu instance on aws and I can successfully get to the If you\'re seeing this, you\'ve successfully installed Tomcat. Congratulations!
This helped me to get it working. Tomcat manager never asking me ID/PASSWORD
You need to add the manager.xml to conf/Catalina/localhost
According to the documentation:
"A default Tomcat installation includes the Manager. To add an instance of the Manager web application Context to a new host install the manager.xml context configuration file in the $CATALINA_BASE/conf/[enginename]/[hostname] folder"
In my case for example, I have this path: /opt/tomcat/conf/Catalina/localhost
Example of manager.xml