To make the Apache web server able to "talk to" Tomcat, an AJP connector has to be created.
Therefore, edit the file
conf/server.xml in Tomcat's home directory and, if not already there, add an AJP connector as shown in the line below:
The connectors that are predefined by default, e.g., the connector for port 8080, should be removed or at least commented out.
Since Tomcat 8.5 files written by Tomcat are not readable by "the world":
Tighten up the default file permissions for the
.tar.gz distribution so no files or directories are world readable by default. Configure Tomcat to run with a default umask of
0027 which may be overridden by setting
setenv.sh. (Tomcat 8.5 change log)
To remedy the situation, use the suggested override option.