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Docker private registry and _catalog problem


#1

The below is my environment to use docker private registry.

  • . Docker version 18.09.0
Client:
 Version:           18.09.0
 API version:       1.39
 Go version:        go1.10.4
 Git commit:        4d60db4
 Built:             Wed Nov  7 00:48:57 2018
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
  Engine:
  Version:          18.09.0
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.4
  Git commit:       4d60db4
  Built:            Wed Nov  7 00:16:44 2018
  OS/Arch:          linux/amd64
  Experimental:     false

  • . Docker registry version : v2.7.0 (I am using docker registry image from docker hub.
  • . Docker-compose version : 1.23.2

I have just made a simple docker private registry on local host machine(Ubuntu 16.04). When build a docker image and run it registry container, the below docker-compose.yml.
registry:
  restart: always
  image: registry:2
  ports:
    - 5000:5000
  volumes:
    - {my/data/path}:/var/lib/registry

While my docker private registry was running, I tried to push my test image and completed it successfully with the below message.

hansungkim@:~/HDD/nfs/v2x_2019/make_docker_image/docker_registry/data$ docker push localhost:5000/my-ubuntu:latest 
The push refers to repository [localhost:5000/my-ubuntu]
3c6f8febc7b2: Pushed 
c47259d2185a: Pushed 
a79e4f3ff375: Pushed 
94ae4bc46133: Pushed 
latest: digest: sha256:f8794c548b9c4bc881dd0f6204e7b1bb61cf55f39deb6114617296f8e482b131 size: 1150

The below is a directory tree for docker registry data.

└── docker
    └── registry
        └── v2
            ├── blobs
            │   └── sha256
            │       ├── 86
            │       │   └── 860140c5e05ae6e62f893bba5f4c8f332457aca9c2f0a9dd83094ea06b354dbd
            │       │       └── data
            │       ├── d2
            │       │   └── d222a4da264e0b37d48b38c62b014a16ca5089ba478a3d7c9a0ce5d7db64fd07
            │       │       └── data
            │       ├── d4
            │       │   └── d4452947e3faf4c9002596b6a9b84831f1412b731b893ddf623b206c523d5e86
            │       │       └── data
            │       ├── dc
            │       │   └── dc25173478e95b766e8bc26944652b9baa87cbebb2d9d1d9d34b85303b9b2067
            │       │       └── data
            │       ├── f8
            │       │   └── f8794c548b9c4bc881dd0f6204e7b1bb61cf55f39deb6114617296f8e482b131
            │       │       └── data
            │       └── fc
            │           └── fc8aef08d7f5f3acb87daab04776b1c2df78d1097b3bf7e34b95b29ef8be0365
            │               └── data
            └── repositories
                └── my-ubuntu
                    ├── _layers
                    │   └── sha256
                    │       ├── 860140c5e05ae6e62f893bba5f4c8f332457aca9c2f0a9dd83094ea06b354dbd
                    │       │   └── link
                    │       ├── d222a4da264e0b37d48b38c62b014a16ca5089ba478a3d7c9a0ce5d7db64fd07
                    │       │   └── link
                    │       ├── d4452947e3faf4c9002596b6a9b84831f1412b731b893ddf623b206c523d5e86
                    │       │   └── link
                    │       ├── dc25173478e95b766e8bc26944652b9baa87cbebb2d9d1d9d34b85303b9b2067
                    │       │   └── link
                    │       └── fc8aef08d7f5f3acb87daab04776b1c2df78d1097b3bf7e34b95b29ef8be0365
                    │           └── link
                    ├── _manifests
                    │   ├── revisions
                    │   │   └── sha256
                    │   │       └── f8794c548b9c4bc881dd0f6204e7b1bb61cf55f39deb6114617296f8e482b131
                    │   │           └── link
                    │   └── tags
                    │       └── latest
                    │           ├── current
                    │           │   └── link
                    │           └── index
                    │               └── sha256
                    │                   └── f8794c548b9c4bc881dd0f6204e7b1bb61cf55f39deb6114617296f8e482b131
                    │                       └── link
                    └── _uploads

37 directories, 14 files

After pushing my image, I wanted to check all of image status from _catalog. But I didn’t see it in docker registry path. It doesn’t exist in that path. If I’m missing anything to deploy a simple private registry, please let us know that.