If you want to know more about cacti check here
Install cacti in Ubuntu 9.10 (Karmic) Server
Preparing Your system
First you need to make sure you have install Ubuntu 9.10 LAMP server and then you need to install the following packages
sudo apt-get install php5 php5-gd php5-mysql
Install accti using the following command
sudo apt-get install cacti-spine
This will start installing cacti and prompt for some questions.
Configuring libphp-adodb option select ok Enter to Continue.
Select your webserver in this example we are using apache2 select ok Enter to Continue
Configure database for cacti select yes Enter to Continue
Enter the root password for your mysql server select ok Enter to Continue
Enter the password (cacti) for the cacti database,select ok Enter to Continue
Re-enter your password
This will complete the cacti installation.
Now you need to point your browser http://serverip/cacti press enter.You should see similar to the following screen Click Next to Continue.
You need to select the type of installation as New Installation and click next to Continue.
Now it will check all the required paths are correct or not you can see this in the following screen here click
Now you should see the Cacti Login screen as follows
Here you need to enter username and password as admin/admin and click login
First time it will prompt you to change cacti admin user password for security reasons and click save
You should see the following screen like below once you logged.
In the above screen Under Configuration Click settings on your right hand side click on paths.Make sure in the “Spine Poller File Path”, you have
Now you need to click on Poller Select “spine” in the “Poller Type”,click on Save.
Now you need to wait for 15 min to see your server graphs starts appearing in cacti graphs.Now your Cacti Monitoring Server is Ready and if you want to know how use cacti graphs and templates check here
If you want complete list of cacti templates check here