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20 November 2008

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install Cacti in Debian Etch

What is Cacti?

cacti logo
Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box. All of this is wrapped in an intuitive, easy to use interface that makes sense for LAN-sized installations up to complex networks with hundreds of devices.

Why Cacti?

Cacti has a nice user interface. It is easy to install and easy to setup, don’t need too much customization.

Downloading Cacti

You can download the newest version of Cacti from its website http://cacti.net/.

wget http://www.cacti.net/downloads/cacti-0.8.7b.tar.gz

Installing Cacti

Install apache webserver with php support, mysql database server, snmp, some php modules and rrdtool.

apt-get install apache2 libapache2-mod-php5 php5 php5-cli php5-mysql php5-gd php5-snmp mysql-client mysql-server libmysqlclient15-dev snmp snmpd rrdtool

Add a user account for cacti.

groupadd cacti
useradd -g cacti cacti

Untar the cacti source file and move to /var/www.

tar -zxvf cacti-0.8.7b.tar.gz
mv cacti-0.8.7b /var/www

Login to your mysql database

mysql -u root

Create a password for your mysql root account and create cacti database and user.

SET PASSWORD FOR root@localhost = PASSWORD (‘your_password_here’);
CREATE DATABASE cacti;
GRANT ALL ON cacti.* TO cacti_user@localhost IDENTIFIED BY ‘your_password’;
quit

and import the database tables

cd /var/www/cacti-0.8.7b/
mysql -u root -p cacti < cacti.sql

Change the owner of rra and log directory to your cacti account.

chown -R cacti rra/ log/

Edit the config.php file located in include directory.

vi include/config.php

Enter your mysql host, user, password and database name.

/* make sure these values refect your actual database/host/user/password */
$database_type = "mysql";
$database_default = "cacti";
$database_hostname = "localhost";
$database_username = "cacti";
$database_password = "your_password";
$database_port = "3306";

As a cacti user

su – cacti
crontab -e

add this line to your crontab

*/5 * * * * /usr/bin/php /var/www/cacti-0.8.7b/poller.php > /dev/null 2>&1

Open up your web browser and point to http://localhost/cacti-0.8.7b/, this will start cacti installation. Click Next then select NEW INSTALL and accept the default installation value. If you don’t see any errors, click Finish to install.

Login to cacti, the default username and password is admin. After login, it will prompt you change your password for security reasons.

Checking

Check your syslog if the cacti’s poller is running every 5 minutes.
If you will see something like this in your syslog, your cacti should work perfectly.

Jul  5 06:50:01 server1 /USR/SBIN/CRON[6543]: (cacti) CMD (/usr/bin/php /var/www/cacti/poller.php > /dev/null 2>&1)

You can start monitoring your servers, routers

and other networking devices with cacti.

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