ApacheTop watches a log-file generated by Apache (in standard common or combined logformat, and generates human-parsable output in realtime like the output of top command from shell. Several other options are also available as a syntax to get furnished results (ie..like results based of hits, query-strings, segments and protocols etc).

Installing Apachetop

Download the source from the official website.

• # cd /usr/src
  # wget http://www.webta.org/apachetop/apachetop-0.12.6.tar.gz
  # cd apachetop-0.12.6
  # ./configure
  # make && make install

Apachetop rpm is also available so you can install it from rpm too.

• # wget http://packages.sw.be/apachetop/<select the latest version and arch>
  # rpm -ivh apachetop-0.12.6-2.el6.rf.x86_64.rpm

NOTE : Apachetop is very much useful to monitor the stats if you have a combined access logs (iee..a common access_log for all your virtualhost). If you have separate access logs configured for your vhosts then you need to use the -f option to view the stats, For example.

• # apachetop -f /var/log/httpd/gnutoolbox_com.access.log

Multiple options are available with this tool which you can list them all using apachetop -h .