mirror of https://github.com/ceph/ceph
212 lines
9.5 KiB
ReStructuredText
212 lines
9.5 KiB
ReStructuredText
===============
|
||
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"]},
|
||
"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: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.
|
||
|
||
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>| |
|
||
+-----------------------+----------------------+----------------+
|
||
|
||
|
||
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.
|