docker registry 镜像 使用Docker registry镜像创建私有仓库的方法
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安装Docker后，可以通过官方提供的registry镜像来简单搭建一套本地私有仓库环境，本文记录简单的搭建过程。
1 使用registry启动私有仓库的容器
docker run -d -p 5000:5000 -v /root/my_registry:/tmp/registry registry
说明：若之前没有安装registry容器则会自动下载并启动一个registry容器，创建本地的私有仓库服务。默认情况下，会将仓库创建在容器的/tmp/registry目录下，可以通过 -v 参数来将镜像文件存放在本地的指定路径上（例如，放在本地目录/root/my_registry下）。
2 向私有仓库push镜像
docker push 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04
说明：根据第一步启动的registry容器所在宿主主机的IP和Port，push某环境的本地容器。
root@gerryyang:~# docker push 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04
The push refers to a repository [104.131.173.242:5000/ubuntu_sshd_gcc_gerry] (len: 1)
Sending image list
Pushing repository 104.131.173.242:5000/ubuntu_sshd_gcc_gerry (1 tags)
511136ea3c5a: Image successfully pushed
3b363fd9d7da: Image successfully pushed
607c5d1cca71: Image successfully pushed
f62feddc05dc: Image successfully pushed
8eaa4ff06b53: Image successfully pushed
894c0161121f: Image successfully pushed
a45787b0222f: Image successfully pushed
f0e3262ed661: Image successfully pushed
Pushing tag for rev [f0e3262ed661] on {http://104.131.173.242:5000/v1/repositories/ubuntu_sshd_gcc_gerry/tags/14.04}
宿主主机my_registry的目录结构
root@gerryyang:~/my_registry# tree
.
├── images
│ ├── 3b363fd9d7dab4db9591058a3f43e806f6fa6f7e2744b63b2df4b84eadb0685a
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── 607c5d1cca71dd3b6c04327c3903363079b72ab3e5e4289d74fb00a9ac7ec2aa
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── 894c0161121f105ac9b81bca7ac583ac1f29772625911db0fa2b6b475f5642fd
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── 8eaa4ff06b53ff7730c4d7a7e21b4426a4b46dee064ca2d5d90d757dc7ea040a
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── a45787b0222f955d68d9db34fb18033144b8a78015d9e306a1613894da0fd86e
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ ├── f0e3262ed6617896b306852c923e4c0e1d359b58b29a02ef849c4b8978c73c65
│ │ ├── ancestry
│ │ ├── _checksum
│ │ ├── json
│ │ └── layer
│ └── f62feddc05dc67da9b725361f97d7ae72a32e355ce1585f9a60d090289120f73
│ ├── ancestry
│ ├── _checksum
│ ├── json
│ └── layer
└── repositories
└── library
└── ubuntu_sshd_gcc_gerry
├── _index_images
├── tag_14.04
└── tag14.04_json
12 directories, 35 files
关于https的问题
root@gerryyang:~# docker push 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04 FATA[0002] Error: Invalid registry endpoint https://104.131.173.242:5000/v1/: Get https://104.131.173.242:5000/v1/_ping: EOF. If this private registry supports only HTTP or HTTPS with an unknown CA certificate, please add `--insecure-registry 104.131.173.242:5000` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/104.131.173.242:5000/ca.crt
解决方法：
修改Docker配置文件
vim /etc/default/docker
增加以下一行
DOCKER_OPTS="$DOCKER_OPTS --insecure-registry=104.131.173.242:5000"
重启Docker
sudo service docker restart
3 私有仓库查询方法
curl http://104.131.173.242:5000/v1/search
说明：使用curl查看仓库104.131.173.242:5000中的镜像。在结果中可以查看到ubuntu_sshd_gcc_gerry，说明已经上传成功了。
gerryyang@mba:personal_repository$curl http://104.131.173.242:5000/v1/search
{"num_results": 0, "query": "", "results": []}
gerryyang@mba:personal_repository$curl http://104.131.173.242:5000/v1/search
{"num_results": 1, "query": "", "results": [{"description": "", "name": "library/ubuntu_sshd_gcc_gerry"}]}
4 在其他的机器上访问和下载私有仓库的镜像
docker pull 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04
root@gerryyang:~# docker pull 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04 Pulling repository 104.131.173.242:5000/ubuntu_sshd_gcc_gerry f0e3262ed661: Download complete 511136ea3c5a: Download complete 3b363fd9d7da: Download complete 607c5d1cca71: Download complete f62feddc05dc: Download complete 8eaa4ff06b53: Download complete 894c0161121f: Download complete a45787b0222f: Download complete Status: Image is up to date for 104.131.173.242:5000/ubuntu_sshd_gcc_gerry:14.04
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