[swift][ceph] Container ACLs don't seem to be respected on Ceph RGW

Jason Anderson jasonanderson at uchicago.edu
Wed Aug 5 23:19:53 UTC 2020

On Aug 5, 2020, at 6:18 PM, Jason Anderson <jasonanderson at uchicago.edu<mailto:jasonanderson at uchicago.edu>> wrote:

As an update, I think one of my problems was the dangling space after “_member_” in my ACL list, which was quite painful to discover. I think it was breaking the matching of my user, which had the role _member_ assigned.

Sorry, I meant in my Ceph configuration, which had this line in the rgw section:

rgw keystone accepted roles =  _member_ , Member, admin

And, it does look like read ACLs must be of the form “.r:*”, despite the Ceph docs. With this in place, public read ACL works. I still can’t get write ACLs to work though, and from looking at the code[1] I’m not sure how it’s supposed to work.


[1]: https://github.com/ceph/ceph/blob/f52fb99f011d9b124ed91f3d001d3551e9a10c8d/src/rgw/rgw_acl_swift.cc

On Aug 4, 2020, at 10:49 PM, Jason Anderson <jasonanderson at uchicago.edu<mailto:jasonanderson at uchicago.edu>> wrote:

Hi all,

Just scratching my head at this for a while and though I’d ask here in case it saves some time. I’m running a Ceph cluster on the Nautilus release and it’s running Swift via the rgw. I have Keystone authentication turned on. Everything works fine in the normal case of creating containers, uploading files, listing containers, etc.

However, I notice that ACLs don’t seem to work. I am not overriding "rgw enforce swift acls”, so it is set to the default of true. I can’t seem to share a container or make it public.

(Side note, confusingly, the Ceph implementation has a different syntax for public read/write containers, ‘*’ as opposed to ‘*:*’ for public write for example.)

Here’s what I’m doing

(as admin)
swift post —write-acl ‘*’ —read-acl ‘*’ public-container
swift stat public-container
                    Account: v1
                  Container: public-container
                    Objects: 1
                      Bytes: 5801
                   Read ACL: *
                  Write ACL: *
                    Sync To:
                   Sync Key:
                X-Timestamp: 1595883106.23179
X-Container-Bytes-Used-Actual: 8192
           X-Storage-Policy: default-placement
            X-Storage-Class: STANDARD
              Last-Modified: Wed, 05 Aug 2020 03:42:11 GMT
                 X-Trans-Id: tx000000000000000662156-005f2a2bea-23478-default
     X-Openstack-Request-Id: tx000000000000000662156-005f2a2bea-23478-default
              Accept-Ranges: bytes
               Content-Type: text/plain; charset=utf-8

(as non-admin)
swift upload public-container test.txt
Warning: failed to create container 'public-container': 409 Conflict: BucketAlreadyExists
Object HEAD failed: https://ceph.example.org:7480/swift/v1/public-container/README.md 403 Forbidden

swift list public-container
Container GET failed: https://ceph.example.org:7480/swift/v1/public-container?format=json 403 Forbidden  [first 60 chars of response] b'{"Code":"AccessDenied","BucketName”:”public-container","RequestId":"tx0'
Failed Transaction ID: tx000000000000000662162-005f2a2c2a-23478-default

What am I missing? Thanks in advance!


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