There is number of tools available to monitor apache in realtime. Like Nagios,Cacti etc. But those tools are little difficult to configure for the first time (Experts Please excuse :-) ). Here I would like to introduce couple of simple tools which help the Webserver admin to monitor his Apache webserver in real time through Web and Console.
Mod_Status
Status Module is a builtin module for apache for a default installation. First checkout whether this module is compiled with your Apache.
[root@apache.org] cat /etc/httpd/conf/httpd.conf | grep status_module
LoadModule status_module modules/mod_status.so
Make sure this line was not comment out. OK,Lets take the backup of your current configuration file
[root@apache.org]cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf_backup
[root@apache.org]vim /etc/httpd/conf/httpd.conf
Goto Last Line and Paste the following
SetHandler server-status
Order Deny,Allow
Allow from all
<\Location >
Search for the Line "ExtendedStatus". Normally this line is commented out. Uncomment it.
Save and Exit
Take your browser. http://your.domain.com/server-status
Take a look at the values,Its Realtime values from the Apache. To view this page continuously,I mean refreshing automatically
http://your.domain.com/server-status?refresh=N
(This N is any number).
