manual:087:1_installation.3_upgrading

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===== Upgrading Cacti =====

  - Backup the old Cacti database.<code>
shell> mysqldump -l --add-drop-table cacti > mysql.cacti
</code><file>
Note: You will probably have to specify the -u and -p flags for the MySQL username and password. 
This user must have permission to read from Cacti's database or you will end up with an empty backup.
</file>
  - Backup the old Cacti directory.<code>shell> mv cacti cacti_old</code>
  - Extract the distribution tarball.<code>shell> tar xzvf cacti-version.tar.gz</code>
  - Rename the new Cacti directory to match the old one.<code>shell> mv cacti-version cacti</code>
  - Edit "include/config.php" and specify the database type, name, host, user and password for your Cacti configuration.<code>$database_type = "mysql";
$database_default = "cacti";
$database_hostname = "localhost";
$database_username = "cactiuser";
$database_password = "cactiuser"
$database_port = "3306";
$database_ssl = false;

/*
   Edit this to point to the default URL of your Cacti install
   ex: if your cacti install as at http://serverip/cacti/ this
   would be set to /cacti/
*/
$url_path = "/cacti/";

/* Default session name - Session name must contain alpha characters */
#$cacti_session_name = "Cacti";
</code>The $plugins array is required for using the [[http://cactiusers.org|Plugin Architecture (PIA)]] only. For legacy plugins, those that must be installed in global.php, we have moved the plugins array out of global.php and into config.php. This was done to insure that global.php remains pristine. It is a file that is not intended to be modified, so with the PIA installed, you should not have to.\\ The variable "URL_PATH" has also been moved from global.php to config.php for the same reason as the plugins array. For those of you upgrading from very old Plugin Architectures you should know that in the past, we attempted to "detect" this path. However, the process was not reliable. Therefore, you have to specify that path in config.php.
  - Copy the *.rrd files from the old Cacti directory.<code>
shell> cp cacti_old/rra/* cacti/rra/</code>
  - Copy any relevant custom scripts from the old Cacti directory. Some script are updated between versions. Therefore, make sure you only over write if the scripts either don't exist or are newer than the distribution's.<code>
shell> cp -u cacti_old/scripts/* cacti/scripts/</code>
  - Copy any relevant custom resource XML files from the old Cacti directory. Some resource XML files are updated between versions. Therefore, make sure you only over write if the XML files either don't exist or are newer than the distribution's.<code>
shell> cp -u -R cacti_old/resource/* cacti/resource/</code>
  - 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.<code>
shell> chown -R cactiuser rra/ log/</code>(Enter a valid username for cactiuser, this user will also be used in the next step for data gathering.)
  - [[1_installation.1_install_unix.7_apply_patches|Apply Patches]]
  - Point your web browser to:<code>
http://your-server/cacti/</code>
  - Follow the on-screen instructions so your database can be updated to the new version.
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