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diff --git a/doc/radosgw/bucketpolicy.rst b/doc/radosgw/bucketpolicy.rst new file mode 100644 index 000000000..99f40c5d7 --- /dev/null +++ b/doc/radosgw/bucketpolicy.rst @@ -0,0 +1,216 @@ +=============== +Bucket Policies +=============== + +.. versionadded:: Luminous + +The Ceph Object Gateway supports a subset of the Amazon S3 policy +language applied to buckets. + + +Creation and Removal +==================== + +Bucket policies are managed through standard S3 operations rather than +radosgw-admin. + +For example, one may use s3cmd to set or delete a policy thus:: + + $ cat > examplepol + { + "Version": "2012-10-17", + "Statement": [{ + "Effect": "Allow", + "Principal": {"AWS": ["arn:aws:iam::usfolks:user/fred:subuser"]}, + "Action": "s3:PutObjectAcl", + "Resource": [ + "arn:aws:s3:::happybucket/*" + ] + }] + } + + $ s3cmd setpolicy examplepol s3://happybucket + $ s3cmd delpolicy s3://happybucket + + +Limitations +=========== + +Currently, we support only the following actions: + +- s3:AbortMultipartUpload +- s3:CreateBucket +- s3:DeleteBucketPolicy +- s3:DeleteBucket +- s3:DeleteBucketWebsite +- s3:DeleteObject +- s3:DeleteObjectVersion +- s3:DeleteReplicationConfiguration +- s3:GetAccelerateConfiguration +- s3:GetBucketAcl +- s3:GetBucketCORS +- s3:GetBucketLocation +- s3:GetBucketLogging +- s3:GetBucketNotification +- s3:GetBucketPolicy +- s3:GetBucketRequestPayment +- s3:GetBucketTagging +- s3:GetBucketVersioning +- s3:GetBucketWebsite +- s3:GetLifecycleConfiguration +- s3:GetObjectAcl +- s3:GetObject +- s3:GetObjectTorrent +- s3:GetObjectVersionAcl +- s3:GetObjectVersion +- s3:GetObjectVersionTorrent +- s3:GetReplicationConfiguration +- s3:IPAddress +- s3:NotIpAddress +- s3:ListAllMyBuckets +- s3:ListBucketMultipartUploads +- s3:ListBucket +- s3:ListBucketVersions +- s3:ListMultipartUploadParts +- s3:PutAccelerateConfiguration +- s3:PutBucketAcl +- s3:PutBucketCORS +- s3:PutBucketLogging +- s3:PutBucketNotification +- s3:PutBucketPolicy +- s3:PutBucketRequestPayment +- s3:PutBucketTagging +- s3:PutBucketVersioning +- s3:PutBucketWebsite +- s3:PutLifecycleConfiguration +- s3:PutObjectAcl +- s3:PutObject +- s3:PutObjectVersionAcl +- s3:PutReplicationConfiguration +- s3:RestoreObject + +We do not yet support setting policies on users, groups, or roles. + +We use the RGW ‘tenant’ identifier in place of the Amazon twelve-digit +account ID. In the future we may allow you to assign an account ID to +a tenant, but for now if you want to use policies between AWS S3 and +RGW S3 you will have to use the Amazon account ID as the tenant ID when +creating users. + +Under AWS, all tenants share a single namespace. RGW gives every +tenant its own namespace of buckets. There may be an option to enable +an AWS-like 'flat' bucket namespace in future versions. At present, to +access a bucket belonging to another tenant, address it as +"tenant:bucket" in the S3 request. + +In AWS, a bucket policy can grant access to another account, and that +account owner can then grant access to individual users with user +permissions. Since we do not yet support user, role, and group +permissions, account owners will currently need to grant access +directly to individual users, and granting an entire account access to +a bucket grants access to all users in that account. + +Bucket policies do not yet support string interpolation. + +For all requests, condition keys we support are: +- aws:CurrentTime +- aws:EpochTime +- aws:PrincipalType +- aws:Referer +- aws:SecureTransport +- aws:SourceIp +- aws:UserAgent +- aws:username + +We support certain s3 condition keys for bucket and object requests. + +.. versionadded:: Mimic + +Bucket Related Operations +~~~~~~~~~~~~~~~~~~~~~~~~~~ + ++-----------------------+----------------------+----------------+ +| Permission | Condition Keys | Comments | ++-----------------------+----------------------+----------------+ +| | s3:x-amz-acl | | +| | s3:x-amz-grant-<perm>| | +|s3:createBucket | where perm is one of | | +| | read/write/read-acp | | +| | write-acp/ | | +| | full-control | | ++-----------------------+----------------------+----------------+ +| | s3:prefix | | +| +----------------------+----------------+ +| s3:ListBucket & | s3:delimiter | | +| +----------------------+----------------+ +| s3:ListBucketVersions | s3:max-keys | | ++-----------------------+----------------------+----------------+ +| s3:PutBucketAcl | s3:x-amz-acl | | +| | s3:x-amz-grant-<perm>| | ++-----------------------+----------------------+----------------+ + +.. _tag_policy: + +Object Related Operations +~~~~~~~~~~~~~~~~~~~~~~~~~~ + ++-----------------------------+-----------------------------------------------+-------------------+ +|Permission |Condition Keys | Comments | +| | | | ++-----------------------------+-----------------------------------------------+-------------------+ +| |s3:x-amz-acl & s3:x-amz-grant-<perm> | | +| | | | +| +-----------------------------------------------+-------------------+ +| |s3:x-amz-copy-source | | +| | | | +| +-----------------------------------------------+-------------------+ +| |s3:x-amz-server-side-encryption | | +| | | | +| +-----------------------------------------------+-------------------+ +|s3:PutObject |s3:x-amz-server-side-encryption-aws-kms-key-id | | +| | | | +| +-----------------------------------------------+-------------------+ +| |s3:x-amz-metadata-directive |PUT & COPY to | +| | |overwrite/preserve | +| | |metadata in COPY | +| | |requests | +| +-----------------------------------------------+-------------------+ +| |s3:RequestObjectTag/<tag-key> | | +| | | | ++-----------------------------+-----------------------------------------------+-------------------+ +|s3:PutObjectAcl |s3:x-amz-acl & s3-amz-grant-<perm> | | +|s3:PutObjectVersionAcl | | | +| +-----------------------------------------------+-------------------+ +| |s3:ExistingObjectTag/<tag-key> | | +| | | | ++-----------------------------+-----------------------------------------------+-------------------+ +| |s3:RequestObjectTag/<tag-key> | | +|s3:PutObjectTagging & +-----------------------------------------------+-------------------+ +|s3:PutObjectVersionTagging |s3:ExistingObjectTag/<tag-key> | | +| | | | ++-----------------------------+-----------------------------------------------+-------------------+ +|s3:GetObject & |s3:ExistingObjectTag/<tag-key> | | +|s3:GetObjectVersion | | | ++-----------------------------+-----------------------------------------------+-------------------+ +|s3:GetObjectAcl & |s3:ExistingObjectTag/<tag-key> | | +|s3:GetObjectVersionAcl | | | ++-----------------------------+-----------------------------------------------+-------------------+ +|s3:GetObjectTagging & |s3:ExistingObjectTag/<tag-key> | | +|s3:GetObjectVersionTagging | | | ++-----------------------------+-----------------------------------------------+-------------------+ +|s3:DeleteObjectTagging & |s3:ExistingObjectTag/<tag-key> | | +|s3:DeleteObjectVersionTagging| | | ++-----------------------------+-----------------------------------------------+-------------------+ + + +More may be supported soon as we integrate with the recently rewritten +Authentication/Authorization subsystem. + +Swift +===== + +There is no way to set bucket policies under Swift, but bucket +policies that have been set govern Swift as well as S3 operations. + +Swift credentials are matched against Principals specified in a policy +in a way specific to whatever backend is being used. |