모티터링 툴 cacti 설치 1

MySQL, APACHE2, PHP, RRDTool, NET-SNMP) 순으로 미리 설치해둔다.
Download the lastest file from http://cacti.net
Extract the distribution tarball to an appropriate directory. ex)/usr/local/apache2/htdoc/
```
shell> tar xzvf cacti-version.tar.gz
```

Create the MySQL database:

shell> mysqladmin --user=root -p create cacti

Import the default cacti database:

shell> mysql -u root -p cacti < cacti.sql

Optional: Create a MySQL username and password for Cacti.

shell> mysql --user=root mysql
mysql> GRANT ALL ON cacti.* TO cactiuser@localhost IDENTIFIED BY 'somepassword';
mysql> flush privileges;

Edit include/config.php and specify the MySQL user, password and database for your Cacti configuration.

$database_default = "cacti";
$database_hostname = "localhost";
$database_username = "cactiuser";
$database_password = "cacti";

Set the appropriate permissions on cacti's directories for graph/log generation. You should execute these commands from inside cacti's directory to change the permissions.
```
shell> chown -R cactiuser rra/ log/
```
(Enter a valid username for cactiuser, this user will also be used in the next step for data gathering.)
Add a line to your /etc/crontab file similar to:
```
*/5 * * * * cactiuser /usr/local/bin/php /(CACTI DIRECTORY)/poller.php > /dev/null 2>&1
```
Replace cactiuser with the valid user specified in the previous step.

Replace /var/www/html/cacti/ with your full Cacti path.
Point your web browser to:

http://your-server/cacti/index.php

Log in the with a username/password of admin. You will be required to change this password immediately. Make sure to fill in all of the path variables carefully and correctly on the following screen. ( 계속...)

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