用户怎么备份云主机数据

import boto3

# 配置COS客户端
cos_client = boto3.client('s3',
                         aws_access_key_id='your-access-key-id',
                         aws_secret_access_key='your-secret-access-key',
                         endpoint_url='https://cos.your-region.myqcloud.com')

# 备份文件
def backup_file(local_file_path, cos_bucket, cos_object_key):
    with open(local_file_path, 'rb') as f:
        cos_client.upload_fileobj(f, cos_bucket, cos_object_key)

# 恢复文件
def restore_file(cos_bucket, cos_object_key, local_file_path):
    with open(local_file_path, 'wb') as f:
        cos_client.download_fileobj(cos_bucket, cos_object_key, f)

# 示例调用
backup_file('/path/to/local/file.txt', 'your-bucket-name', 'backup/file.txt')
restore_file('your-bucket-name', 'backup/file.txt', '/path/to/local/file.txt')