awstats
 
1) Installation
 
 #yum install epel-release
 #yum install httpd
 #chkconfig httpd on
 #service httpd start
 #yum install awstats

2) Configuration

 a) Changes in log format in httpd.conf
 
 check the below entry for log format. if it does not exist then add it.    
 LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    

 b) changes in virtualhosts 

 change your log configuration like below
 CustomLog logs/yourdomain.com-access_log combined
 
 c) configuring awstats.conf for apache 
 
 #vim /etc/httpd/conf.d/awstats.conf

  add below entries in <Directory "/usr/share/awstats/wwwroot">
  </Directory> container

  AuthUserFile "/path-to-file/.htpasswd"
  AuthName "Restriceted Access"
  AuthType Basic
  Require user "htuser"


 Then create password file by below command
 #htpasswd -c /path-to-file/.htpasswd htuser
 #chmod 404 /path-to-file/.htpasswd htuser

d) creating configuation file for awstat

 #cp /etc/awstats/awstats.localhost.localdomain.conf /etc/awstats/yourdomain.com.conf
 
 then edit the file /etc/awstats/yourdomain.com.conf

# vim /etc/awstats/yourdomain.com.conf and change the below entries according to domain

LogFile="/var/log/httpd/yourdomain.com-access_log"
SiteDomain="yourdomain.com"
HostAliases="yourdomain.com www.yourdomain.com"
( for multiple domains its better to create seperate files for each domain)

e) setting permissions 


now change permissions for the awstat folder

#find  /usr/share/awstats -type d -exec chmod 701 '{}' \;
#find /usr/share/awstats  -type f  -exec chmod 404 '{}' \;

#chmod +x  /usr/share/awstats/wwwroot/cgi-bin/awstats.pl
#chmod 400 /etc/awstats/*.conf


Once you make all the changes make sure to restart apache to get configuration changes into effect

#/etc/init.d/httpd stop
#/etc/init.d/httpd start

or #/etc/init.d/httpd restart

make necessary changes according to your domain in below url  to check the statistics
http://www.yourdomain.com/awstats/awstats.pl?config=yourdomain.com