MySQL と Perl: データのバックアップおよびリカバリ機能を実装する方法

#!/usr/bin/perl

use strict;
use warnings;
use DBI;

# MySQL数据库连接配置
my $host = "localhost";
my $port = 3306;
my $user = "root";
my $password = "password";

# 备份目录
my $backup_dir = "/backup";

# 获取当前日期时间
my ($sec, $min, $hour, $day, $month, $year) = localtime();
my $timestamp = sprintf("%04d%02d%02d_%02d%02d%02d", $year + 1900, $month + 1, $day, $hour, $min, $sec);

# 创建备份目录
my $backup_path = "$backup_dir/$timestamp";
mkdir($backup_path) or die "无法创建备份目录：$backup_path";

# 连接MySQL数据库
my $dsn = "DBI:mysql:host=$host;port=$port";
my $dbh = DBI->connect($dsn, $user, $password) or die "无法连接数据库";

# 获取所有数据库
my $get_databases_sql = "SHOW DATABASES";
my $get_databases_sth = $dbh->prepare($get_databases_sql);
$get_databases_sth->execute();

# 备份每个数据库
while (my ($database) = $get_databases_sth->fetchrow_array()) {
    next if ($database eq "information_schema" || $database eq "mysql" || $database eq "performance_schema");
    
    my $backup_file = "$backup_path/$database.sql";
    my $backup_command = "mysqldump -h $host -P $port -u $user -p$password $database > $backup_file";
    system($backup_command) == 0 or die "备份失败：$database";
}

$get_databases_sth->finish();
$dbh->disconnect();

print "备份完成：$backup_path
";

#!/usr/bin/perl

use strict;
use warnings;
use DBI;

# MySQL数据库连接配置
my $host = "localhost";
my $port = 3306;
my $user = "root";
my $password = "password";

# 备份文件
my $backup_file = "/backup/20220101_120000/db1.sql";

# 连接MySQL数据库
my $dsn = "DBI:mysql:host=$host;port=$port";
my $dbh = DBI->connect($dsn, $user, $password) or die "无法连接数据库";

# 恢复数据
my $restore_command = "mysql -h $host -P $port -u $user -p$password < $backup_file";
system($restore_command) == 0 or die "恢复失败：$backup_file";

$dbh->disconnect();

print "数据恢复完成：$backup_file
";