Milvus备份

Milvus Backup 提供数据备份和还原功能, 以确保您的 Milvus 数据的安全。

获取Milvus备份

你可以下载已编译的二进制文件，也可以从源代码构建。

要下载已编译的二进制文件，请转到发布 (opens in a new tab)页面，您可以在其中找到所有官方发布版本。请记住，始终使用标记为最新的发布版本中的二进制文件。

要从源代码编译，请执行以下操作：

git clone git@github.com:zilliztech/milvus-backup.git
go get
go build
 

准备配置文件

下载示例配置文件 (opens in a new tab)，并根据需要进行修改。

然后，在下载或构建的Milvus备份二进制文件旁边创建一个名为configs的文件夹，并将配置文件放在configs文件夹中。

您的文件夹结构应该与以下相似：

 
workspace
├── milvus-backup
└── configs
     └── backup.yaml
 

由于Milvus备份无法将数据备份到本地路径，请在调整配置文件时确保Minio设置正确。

默认Minio存储桶的名称因安装Milvus的方式而异。在更改Minio设置时，请参考以下表格。

准备数据

如果您在默认端口下运行空的本地Milvus实例，请使用示例Python脚本在实例中生成一些数据。随意更改脚本以适应您的需求。

获取脚本 (opens in a new tab)。运行脚本生成数据。确保已安装PyMilvus (opens in a new tab)，官方Milvus Python SDK。

python example/prepare_data.py
 

此步骤是可选的。如果跳过此步骤，请确保Milvus实例中已有一些数据。

备份数据

Note that running Milvus Backup against a Milvus instance will not normally affect the running of the instance. Your Milvus instance is fully functional during backup or restore.

Install with Docker ComposeInstall with Helm ChartInstall with Package Run the following command to create a backup.

./milvus-backup create -n <backup_name>
 

Once the command is executed, you can check the backup files in the bucket specified in the Minio settings. Specifically, you can download them using Minio Console or the mc client.

To download from [Minio Console](https://min.io/docs/minio/kubernetes/upstream/administration/minio-console） (opens in a new tab), log into Minio Console, locate the bucket specified in minio.address, select the files in the bucket, and click Download to download them.

If you prefer the mc client (opens in a new tab), do as follows:

# configure a Minio host
mc alias set my_minio https://<minio_endpoint> <accessKey> <secretKey>
 
# List the available buckets
mc ls my_minio
 
# Download a bucket recursively
mc cp --recursive my_minio/<your-bucket-path> <local_dir_path>
 

Now, you can save the backup files to a safe place for restoration in the future, or upload them to Zilliz Cloud (opens in a new tab) to create a managed vector database with your data. For details, refer to Migrate from Milvus to Zilliz Cloud (opens in a new tab).

Restore data

Install with Docker ComposeInstall with Helm ChartInstall with Package You can run the restore command with the -s flag to create a new collection by restoring the data from the backup:

./milvus-backup restore -n my_backup -s _recover
 

The -s flag allows you to set a suffix for the new collection to be created. The above command will create a new collection called hello_milvus_recover in your Milvus instance.

If you prefer to restore the backed-up collection without changing its name, drop the collection before restoring it from the backup. You can now clean the data generated in Prepare data by running the following command.

python example/clean_data.py
 

Then run the following command to restore the data from the backup.

./milvus-backup restore -n my_backup
 

验证恢复的数据

恢复完成后，您可以按以下方式将恢复的集合索引以验证恢复的数据：

python example/verify_data.py
 

请注意，上述脚本假定您已经使用restore命令并设置了-s标志，并且后缀设置为-recover。随时根据您的需要更改脚本。