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Upload to container registry fails with 403 when S3 storage is used

If I push to my container registry I receive this error:

f042d6df1be9: Pushing [==================================================>]  12.5 MB
c2195e6e235f: Pushing [====================>                              ] 13.68 MB/33.25 MB
ed1f96f04c96: Pushing [==================================>                ] 13.39 MB/19.2 MB
f645386f1bf6: Pushing [==================================================>] 9.216 kB
b506a2df4ccd: Pushing [==================================>                ] 10.49 MB/15.36 MB
6d9adc4dcda7: Pushing [==================================================>]   426 kB
d099a5b1211c: Pushing [=====>                                             ] 35.28 MB/349.2 MB
5f70bf18a086: Waiting 
3f647195edaf: Waiting 
4e69899d6e22: Waiting 
bb966b50623d: Waiting 
fb49515ec5d8: Waiting 
bd750002938c: Waiting 
917c0fc99b35: Waiting 
error parsing HTTP 403 response body: unexpected end of JSON input: ""

Command used to push:

$ docker push gitlab.example.com:4567/example/example-repo

Registry config:

registry_external_url 'https://gitlab.example.com:4567'

gitlab_rails['registry_enabled'] = true
gitlab_rails['registry_host'] = "gitlab.example.com"
#gitlab_rails['registry_port'] = "4567"
gitlab_rails['registry_api_url'] = "http://localhost:5000"
gitlab_rails['gitlab_default_projects_features_container_registry'] = false

registry['enable'] = true
registry['storage'] = {
  's3' => {
    'accesskey' => '',
    'secretkey' => '',
    'bucket' => 'example.bucket',
    'region' => 'us-west-2'
  }
}

Misc Info:

  • I have logged into my registry successfully
  • Parts of the upload can be seen in the S3 bucket
  • Running Gitlab 8.9.6-ee
  • I am able to successfully push the image to the registry if I do not set the storage option to S3