How get I the Tomcat AJP-Connectors working?

Make sure that:

1. you type a trailing slash http://host/tomcat7/, not http://host/tomcat7.

2. you have a AJP 1.3 connector listen on port 8009 in server.xml:

   <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
   

If it still doesn't work, I suggest you turning on debug and take a look at mod_jk.log.

---

EDIT:

If you use:

JkMount  /tomcat7/* worker1

and access via http://host/tomcat7, I'm sure you will get the Apache 404 error.

You can specify JkMount in a Virtual Host section which you want:

<VirtualHost *:80>
    ServerName  xx
    ServerAdmin xx

    JkMount /tomcat7 worker1
    JkMount /tomcat7/* worker1
</VirtualHost>