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Document required S3 bucket policy #744

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Document required S3 bucket policy
lindhe Jan 26, 2026
81efbc5
Trim AbortMultipartUpload and CreateBucket from the list
lindhe Jan 29, 2026
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Add permissions for Multipart uploads
lindhe Jan 30, 2026
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42 changes: 42 additions & 0 deletions web/docs/object_stores.md
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Expand Up @@ -129,6 +129,48 @@ These strategies help you safeguard backups without requiring broad delete
permissions, ensuring both security and compliance with minimal operational
overhead.

### S3 Lifecycle Policy

Barman Cloud requires the following permissions in the S3 bucket:

- [`s3:AbortMultipartUpload`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_AbortMultipartUpload.html)
- [`s3:DeleteObject`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteObject.html)
- [`s3:GetObject`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObject.html)
- [`s3:ListBucketMultipartUploads`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListMultipartUploads.html)
- [`s3:ListBucket`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListBuckets.html)
- [`s3:ListMultipartUploadParts`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListParts.html)
- [`s3:PutObject`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObject.html)

Here's an example of what such a bucket policy may look like:

```json
{
"Statement": [
{
"Action": [
"s3:AbortMultipartUpload",
"s3:DeleteObject",
"s3:GetObject",
"s3:ListBucket",
"s3:ListBucketMultipartUploads",
"s3:ListMultipartUploadParts",
"s3:PutObject"
],
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::123456789012:user/MaryMajor"
},
"Resource": [
"arn:aws:s3:::amzn-s3-demo-bucket1",
"arn:aws:s3:::amzn-s3-demo-bucket1/*"
],
"Sid": "statement1",
}
],
"Version":"2012-10-17"
}
```

### S3-Compatible Storage Providers

You can use S3-compatible services like **MinIO**, **Linode (Akamai) Object Storage**,
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