List AJP connections between httpd and Tomcat

Question

On a CentOS 7 server, httpd is configured to use AJP to route http traffic to a Tomcat instance running on the same server.

What specific bash commands will list and count the AJP connections that exist between httpd and tomcat ?

In case it helps, here is the background:

The httpd configuration that sends requests to Tomcat via AJP is:

[root@remote-host-name ~]# vi /etc/httpd/conf.d/mydomain.com.conf

<VirtualHost www.mydomain.com:80>
    ServerName www.mydomain.com
    ServerAlias mydomain.com
    ErrorLog /var/log/httpd/mydomain_com_error.log
    CustomLog /var/log/httpd/mydomain_com_requests.log combined
    ProxyPass / ajp://my.public.ip.addr:8012/
    ProxyPassReverse / ajp://my.public.ip.addr:8012/
</VirtualHost>

And the Tomcat config for receiving the AJP -routed connections includes:

[root@remote-host-name ~]# vi /opt/tomcat/conf/server.xml
.....
      <Connector port="8012" protocol="AJP/1.3" redirectPort="8446" connectionTimeout="10000" keepAliveTimeout="10000" />
.....  

How do I list and count the live AJP connections between httpd and tomcat at any given moment?

Answer 1

You can use netstat to find the connections to ajp port 8012 here as per your config netstat -an | grep 8012