将Docker镜像从私有Docker Registry保存到AWS S3存储桶时出错

Question

我正在尝试设置一个私有Docker Registry并将图像保存到AWS S3实例.注册表似乎工作正常 - 它启动正常,我可以通过https进行身份验证.我遇到的问题是我收到一个错误保存到S3,所以我假设S3 IAM策略存在一些权限问题.

该docker run命令如下所示:

docker run -p 443:5000 \
  --link redis:redis \
  -e REGISTRY_STORAGE=s3 \
  -e REGISTRY_STORAGE_S3_BUCKET=my-docker-registry \
  -e REGISTRY_STORAGE_S3_ACCESSKEY=**** \
  -e REGISTRY_STORAGE_S3_SECRETKEY=**** \
  -e REGISTRY_STORAGE_S3_REGION=us-east-1 \
  -v `pwd`/auth:/auth \
  -e REGISTRY_AUTH=htpasswd \
  -e "REGISTRY_AUTH_HTPASSWD_REALM=Registry Realm" \
  -e REGISTRY_AUTH_HTPASSWD_PATH=/auth/htpasswd \
  -v `pwd`/certs:/certs \
  -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/my.com_chain.crt \
  -e REGISTRY_HTTP_TLS_KEY=/certs/my.com.key \
  -e REGISTRY_STORAGE_CACHE_BLOBDESCRIPTOR=redis \
  -e REGISTRY_REDIS_ADDR=redis:6379 \
  registry:2.5

S3 IAM策略如下所示:

{
   "Version":"2012-10-17",
   "Statement":[
      {
         "Effect":"Allow",
         "Action":[
            "s3:ListAllMyBuckets"
         ],
         "Resource":"arn:aws:s3:::*"
      },
      {
         "Effect":"Allow",
         "Action":[
            "s3:ListBucket",
            "s3:GetBucketLocation"
         ],
         "Resource":"arn:aws:s3:::my-docker-registry"
      },
      {
         "Effect":"Allow",
         "Action":[
              "s3:PutObject",
              "s3:GetObject",
              "s3:DeleteObject",
              "s3:ListMultipartUploadParts",
              "s3:AbortMultipartUpload"
         ],
         "Resource":"arn:aws:s3:::my-docker-registry/*"
      }
   ]
}

错误日志条目是:

level=error msg="error resolving upload: s3aws: AccessDenied: Access Denied\n\tstatus code: 403, request id: 2B224..." auth.user.name=my-user go.version=go1.6.3 http.request.host=my.domain.com http.request.id=13b79c07-... http.request.method=PATCH http.request.remoteaddr="xx.xx.xx.xx:41392" http.request.uri="/v2/my-test/blobs/uploads/467d94ea-2a77...?_state=zQd-..." http.request.useragent="docker/1.12.0 go/go1.6.3 git-commit/8eab123 kernel/4.4.15-moby os/linux arch/amd64 UpstreamClient(Docker-Client/1.12.0 \\(darwin\\))" instance.id=8a8db6f1-8fe4 vars.name=my-test vars.uuid=467d94ea-2a77 version=v2.5.0

我在其他应用程序中使用了类似的文件上传策略,所以我不确定问题出在哪里.我需要在IAM策略中更改哪些内容以允许注册表保存到S3存储桶？

Answer 1

我想通了 - 不确定Docker如何保存图像文件会有什么变化,但现在看来你需要添加s3:ListBucketMultipartUploads到桶级权限(下面的中间块,完全显示IAM):

{
   "Version":"2012-10-17",
   "Statement":[
      {
         "Effect":"Allow",
         "Action":[
            "s3:ListAllMyBuckets"
         ],
         "Resource":"arn:aws:s3:::*"
      },
      {
         "Effect":"Allow",
         "Action":[
            "s3:ListBucket",
            "s3:GetBucketLocation",
            "s3:ListBucketMultipartUploads"
         ],
         "Resource":"arn:aws:s3:::my-docker-registry"
      },
      {
         "Effect":"Allow",
         "Action":[
              "s3:PutObject",
              "s3:GetObject",
              "s3:DeleteObject",
              "s3:ListMultipartUploadParts",
              "s3:AbortMultipartUpload"
         ],
         "Resource":"arn:aws:s3:::my-docker-registry/*"
      }
   ]
}

似乎现在运作良好.

接下来的步骤是使用上面的docker runargs 创建一个docker-compose文件,为其添加一个redis容器,它是一个完整的私有注册表解决方案.