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85 lines
4.5 KiB
85 lines
4.5 KiB
4 years ago
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# 存储桶复制指南 [](https://slack.min.io) [](https://hub.docker.com/r/minio/minio/)
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Bucket replication is designed to replicate selected objects in a bucket to a destination bucket.
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存储桶复制功能可以把存储桶中选中的对象复制到目标存储桶。
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要想复制一个存储桶上的对象,到同一集群或者不同集群的目标站点上的目标存储桶中，首先要为源存储桶和目标存储桶启用[版本控制功能](https://docs.minio.io/docs/minio-bucket-versioning-guide.html)。最后，需要在源MinIO服务器上配置目标站点和目标存储桶。
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## 强调
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- 和AWS S3不同，MinIO的源存储桶和目标存储桶名字可以一样，可处理各种情况，例如*Splunk*，*Veeam*站点到站点*DR*。
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- 与AWS S3不同，MinIO纯天然支持跨源桶和目标桶的对象锁定保留。
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- 比[AWS S3 Bucket Replication Config](https://docs.aws.amazon.com/AmazonS3/latest/dev/replication-add-config.html)实现更简单，像IAM Role, AccessControlTranslation, Metrics and SourceSelectionCriteria这些功能在MinIO中不需要.
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## 如何使用?
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如下所示在源群集上创建复制目标：
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```
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mc admin bucket remote add myminio/srcbucket https://accessKey:secretKey@replica-endpoint:9000/destbucket --service replication --region us-east-1
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Role ARN = 'arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket'
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```
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请注意，admin需要具有源集群上的*s3:GetReplicationConfigurationAction*权限。在目标上使用的凭据需要具有*s3:ReplicateObject*权限. 成功创建并授权后，将生成复制目标ARN。下面的命令列出了所有当前授权的复制目标：:
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```
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mc admin bucket remote ls myminio/srcbucket --service "replication"
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Role ARN = 'arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket'
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```
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现在可以使用带有复制配置JSON文件，把复制配置添加到源存储桶。上面的角色ARN作为配置中的json元素传入。
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```json
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{
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"Role" :"arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket",
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"Rules": [
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{
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"Status": "Enabled",
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"Priority": 1,
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"DeleteMarkerReplication": { "Status": "Disabled" },
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"Filter" : {
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"And": {
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"Prefix": "Tax",
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"Tags": [
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{
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"Key": "Year",
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"Value": "2019"
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},
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{
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"Key": "Company",
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"Value": "AcmeCorp"
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}
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]
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}
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},
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"Destination": {
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"Bucket": "arn:aws:s3:::destbucket",
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"StorageClass": "STANDARD"
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}
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}
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]
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}
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```
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```
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mc replicate add myminio/srcbucket/Tax --priority 1 --arn "arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket" --tags "Year=2019&Company=AcmeCorp" --storage-class "STANDARD"
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Replication configuration applied successfully to myminio/srcbucket.
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```
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复制配置遵循[AWS S3规范](https://docs.aws.amazon.com/AmazonS3/latest/dev/replication-add-config.html). 现在，上传到源存储桶中符合复制条件的任何对象都将被MinIO服务器自动复制到远程目标存储桶中。通过禁用配置中的特定规则或者删除复制配置，都可以随时禁用复制。
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按照S3规范，当从源存储桶中删除一个对象后，副本不会被删除。
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当对象锁定与复制结合使用时，源桶和目标桶都需要启用对象锁定。同理，如果目标也支持加密，则服务器端将复制加密的对象。
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复制状态可以在源和目标对象的元数据中看到。在源端，根据复制的结果是成功还是失败，`X-Amz-Replication-Status`会从`PENDING`变更为`COMPLETE`或者 `FAILED`状态。 在目标端，对象成功复制，`X-Amz-Replication-Status`会被设置为`REPLICA`状态。在定期的磁盘扫描周期中，任何复制失败都将自动重新尝试。
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## 进一步探索
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- [MinIO存储桶版本控制实现](https://docs.minio.io/docs/minio-bucket-versioning-guide.html)
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- [MinIO客户端快速入门指南](https://docs.minio.io/cn/minio-client-quickstart-guide.html)
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