Above given is Naglite interface which use Nagios status file and list only services/host which are in trouble .
Let me remind you that Naglite3 needs running Nagios otherwise it will got the status.dat file, which is used by Naglite to get Nagios data.
To install Naglite for Nagios installation (Assumed that my Nagios installed in /usr/local/nagios)
step1. I move into folder /var/www/html,
root# cd /var/www/html
then cloned Naglite3 code
root# git clone git://github.com/saz/Naglite3.git
You will found Naglite3 directory in /var/www/html now
step2. in /var/www/html/Naglite3 directory , there will a file config.php.example, rename it to config.php
root# cd Naglite3
root# mv config.php.example config.php
step3. Open config.php in any text editor
root# vi config.php
You will find a $statusfile line as commented . Uncomment it and point it right Nagios status file .
In my case, Nagios status file is on the location /usr/local/nagios/var/status.dat, So I changed statusfile variable to
$statusfile = /usr/local/nagios/var/status.dat
Save the file
step4. Open the Naglite3 interface