Il faut une machine Linux (au minimum un Raspberry Pi à la maison) installer un cron
1) sur l'hébergement mettre un script PHP qui exporte la database dans un fichier
2) dans un cron faire un appel à ce script PHP, on a un export dans un fichier texte sur l'hébergement
3) dans un cron récupérer le fichier texte. on a ainsi une sauvegarde de la base de données.
4) dans un cron récupérer tous les fichiers avec ftp.
Voici:
backup-db.php
<?php
/**
* This file contains the Backup_Database class wich performs
* a partial or complete backup of any given MySQL database
* @author Daniel L▒pez Aza▒a <http://www.daniloaz.com-->
* @version 1.0
*/
// Report all errors
error_reporting(E_ALL);
/**
* Define database parameters here
*/
define("DB_USER", 'user');
define("DB_PASSWORD", 'pass');
define("DB_NAME", 'nom_database');
define("DB_HOST", 'serveur.db');
define("OUTPUT_DIR", 'backupdb');
define("TABLES", '*');
/**
* Instantiate Backup_Database and perform backup
*/
$backupDatabase = new Backup_Database(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$status = $backupDatabase->backupTables(TABLES, OUTPUT_DIR) ? 'OK' : 'KO';
echo "
Backup result: ".$status;
/**
* The Backup_Database class
*/
class Backup_Database {
/**
* Host where database is located
*/
var $host = '';
/**
* Username used to connect to database
*/
var $username = '';
/**
* Password used to connect to database
*/
var $passwd = '';
/**
* Database to backup
*/
var $dbName = '';
/**
* Database charset
*/
var $charset = '';
/**
* Constructor initializes database
*/
function Backup_Database($host, $username, $passwd, $dbName, $charset = 'utf8')
{
$this->host = $host;
$this->username = $username;
$this->passwd = $passwd;
$this->dbName = $dbName;
$this->charset = $charset;
$this->initializeDatabase();
}
protected function initializeDatabase()
{
$conn = mysql_connect($this->host, $this->username, $this->passwd);
mysql_select_db($this->dbName, $conn);
if (! mysql_set_charset ($this->charset, $conn))
{
mysql_query('SET NAMES '.$this->charset);
}
}
/**
* Backup the whole database or just some tables
* Use '*' for whole database or 'table1 table2 table3...'
* @param string $tables
*/
public function backupTables($tables = '*', $outputDir = '.')
{
try
{
/**
* Tables to export
*/
if($tables == '*')
{
$tables = array();
$result = mysql_query('SHOW TABLES');
while($row = mysql_fetch_row($result))
{
$tables[] = $row[0];
}
}
else
{
$tables = is_array($tables) ? $tables : explode(',',$tables);
}
$sql = 'CREATE DATABASE IF NOT EXISTS '.$this->dbName.";\n\n";
$sql .= 'USE '.$this->dbName.";\n\n";
/**
* Iterate tables
*/
foreach($tables as $table)
{
echo "Backing up ".$table." table...";
$result = mysql_query('SELECT * FROM '.$table);
$numFields = mysql_num_fields($result);
$sql .= 'DROP TABLE IF EXISTS '.$table.';';
$row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
$sql.= "\n\n".$row2[1].";\n\n";
for ($i = 0; $i < $numFields; $i++)
{
while($row = mysql_fetch_row($result))
{
$sql .= 'INSERT INTO '.$table.' VALUES(';
for($j=0; $j<$numFields; $j++)
{
$row[$j] = addslashes($row[$j]);
$row[$j] = ereg_replace("\n","\\n",$row[$j]);
if (isset($row[$j]))
{
$sql .= '"'.$row[$j].'"' ;
}
else
{
$sql.= '""';
}
if ($j < ($numFields-1))
{
$sql .= ',';
}
}
$sql.= ");\n";
}
}
$sql.="\n\n\n";
echo " OK" . "
";
}
}
catch (Exception $e)
{
var_dump($e->getMessage());
return false;
}
return $this->saveFile($sql, $outputDir);
}
/**
* Save SQL to file
* @param string $sql
*/
protected function saveFile(&$sql, $outputDir = '.')
{
if (!$sql) return false;
try
{
/* $handle = fopen($outputDir.'/db-backup-'.$this->dbName.'-'.date("Ymd-His", time()).'.sql','w+'); */
$handle = fopen($outputDir.'/db-backup-'.$this->dbName .'.sql','w+');
fwrite($handle, $sql);
fclose($handle);
}
catch (Exception $e)
{
var_dump($e->getMessage());
return false;
}
return true;
}
}
?>
Premier script à lancer dans un cron
#!/bin/bash
mkdir -p /home/backup
cd /home/backup
# declencher l'export
wget http://nom.du.site/backup-db.php -O /dev/null
# recuperer l'export
wget http://nom.du.site/backupdb/db-backup-.sql -O db-backup-.sql
Deuxième script à lancer avec un cron
#!/bin/bash
cd /home/backup/site
ncftpget -R -V -d ncftpget.log -u user -p password ftp.cluster0xx.ovh.net . /
Maintenant c'est à vous de gérer la durée de rétention de ce backup.
