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This is a console-based (non-gui) monitoring tool which reads the server-status pages from one or more Apache servers and combines the information onto one easy monitoring screen. It displays the current number of reads, writes, keepalives etc, plus the overall number of requests/hits processed, the amount of data transferred, the number of requests & data processed per second since the Apache servers were started, and the ‘current’ per second numbers.
It is useful for overall benchmarking of your Apache servers, especially in a load-balanced environment, as well as monitoring how well your servers are coping with the load and what pages are being served at any one time.
The file apachetop.conf needs to exist. There is a file called apachetop.conf.example and you need to use that to create the file apachetop.conf, which tells apachetop where how to monitor your apache servers.
In that file, you can have one or more URLs which should return your Apache’s server status page. You can optionally include http usernames and passwords in that file if necessary.