Monitoring Hosted website using local nagios instance

Hi, recently I am trying to monitor the status of my hosted web page using a local nagios instance.
I used nagios check_http plugin for this.

1) Create a new command in commands.cfg file and use check_http as your base command and then alter the parameters
e.g.


define command{
        command_name    check_http_tnt
        command_line    $USER1$/check_http -H www.tipsntraps.com $ARG1$
        }

2) Define a new service to monitor the web page www.tipsntraps.com/index.php and expect the http_responce code 200

define service{
        use                             local-service         ; Name of service template to use
        host_name                       Rubicon Live
        service_description             TNT
        check_command                   check_http_tnt! -u /index.php -e 200
        notifications_enabled           0
        }

3)  Verify the sample Nagios configuration files.

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg


4) If there are no errors, start Nagios.

/etc/init.d/nagios start