docker 仓库搭建

阿里云服务器：

127.0.0.1(客户端)

127.0.0.2(私有服务器)

127.0.0.2作为私有仓库使用

1.下载镜像

[root@insure ~]# docker pull registry
Using default tag: latest
latest: Pulling from library/registry
456f9d0bf1d1: Pull complete 
b7f3f37a05d2: Pull complete 
d1b2fc1a6bc7: Pull complete 
400c20544fd6: Pull complete 
48473a72399c: Pull complete 
Digest: sha256:2a5b47a613fd7e9d28120fa77016554c3dffa8913b6a314ede518447ddc68e2f
Status: Downloaded newer image for registry:latest

2.通过镜像启动一个容器

[root@insure ~]# docker run -d -p 5000:5000 -v /opt/data/registry:/tmp/registry registry
223608fc9814b1c7f22b47248d6006f50f322f35c4f8e92c7a9429a9f6104767
[root@insure ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
223608fc9814        registry            "/entrypoint.sh /etc…"   5 seconds ago       Up 4 seconds        0.0.0.0:5000->5000/tcp   eager_euler

命令解析：docker run -d -p 5000:5000 -v /opt/data/registry:/tmp/registry registry

使用官方提供的registry镜像来搭建一套本地的私有仓库环境 

通过-v参数将镜像文件存放到本地的指定路径上/opt/data/registry
本地仓库本身就是容器，命令的含义就是下载并创建一个registry容器，创建本地的私有仓库，仓库得路径是/tmp/registry

进入容器内部的命令

[root@insure ~]# docker exec -it 223608fc9814 sh
/ # ls
bin            entrypoint.sh  home           linuxrc        mnt            root           sbin           sys            usr
dev            etc            lib            media          proc           run            srv            tmp            var

127.0.0.1客户端使用

1.下载一个hello-world镜像

[root@insure ~]# docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete 
Digest: sha256:0add3ace90ecb4adbf7777e9aacf18357296e799f81cabc9fde470971e499788
Status: Downloaded newer image for hello-world:latest

2.给hello-world镜像打个tag，表示新的版本

[root@insure ~]# docker tag hello-world:latest 127.0.0.2:5000/hello-world:latest

3.将新的hello-world镜像上传到私有仓库

[root@insure ~]# docker push 127.0.0.2:5000/hello-world:latest
The push refers to repository [127.0.0.2:5000/hello-world]
Get https://127.0.0.2:5000/v2/: http: server gave HTTP response to HTTPS client

原因是docker私有仓库服务器，默认是基于https传输的，所以我们需要在客户端192.168.1.160做相关设置，不使用https传输

[root@insure ~]# vi /etc/docker/daemon.json

添加如下内容

{
  "registry-mirror": [
    "https://registry.docker-cn.com"
  ],
  "insecure-registries": [
    "127.0.0.2:5000"
  ]
}

[root@insure /]# vi /lib/systemd/system/docker.service        修改有问题不用管这个
添加如下内容ExecStart=/usr/bin/dockerd --insecure-registry 116.62.163.101:5000

依次执行下面两条命令，重新启动docker

[root@insure ~]# systemctl daemon-reload
[root@insure ~]# systemctl restart docker

再次执行上传到私有仓库的命令，并测试

[root@insure ~]# docker push 127.0.0.2:5000/hello-world:latest
The push refers to repository [127.0.0.2:5000/hello-world]
428c97da766c: Pushed 
latest: digest: sha256:1a6fd470b9ce10849be79e99529a88371dff60c60aab424c077007f6979b4812 size: 524
[root@insure ~]# curl http://127.0.0.2:5000/v2/_catalog
{"repositories":["hello-world"]}

 删除镜像进行重新下载

[root@insure /]# docker pull 127.0.0.2:5000/hello-world
Using default tag: latest
latest: Pulling from hello-world
d1725b59e92d: Pull complete 
Digest: sha256:1a6fd470b9ce10849be79e99529a88371dff60c60aab424c077007f6979b4812
Status: Downloaded newer image for 127.0.0.2:5000/hello-world:latest
[root@insure /]# docker images
REPOSITORY                        TAG                 IMAGE ID            CREATED             SIZE
dashboard                         latest              60ff0c365e46        3 days ago          662MB
jdk-8u141                         20181222            c717428b1276        3 days ago          578MB
tomcat                            latest              ef802ca71927        5 days ago          475MB
centos                            latest              1e1148e4cc2c        2 weeks ago         202MB
openjdk                           latest              8e7eacedab93        2 weeks ago         986MB
127.0.0.2:5000/hello-world   latest              4ab4c602aa5e        3 months ago        1.84kB

127.0.0.2私有仓库上面查看上传的镜像

挂载和临时目录都没有找到，查询

[root@insure lib]# find / -name "hello-world"
/var/lib/docker/volumes/6fcff317934d3c3f4bbaf1c3c4b6dc240b42b69242d8159e75e283ff2d217e16/_data/docker/registry/v2/repositories/hello-world
/var/lib/docker/volumes/efed8eab2f8e536123f218486a9462d41e70bc0c6bb4c019d1b73cf646c878de/_data/docker/registry/v2/repositories/hello-world
[root@insure lib]# cd /var/lib/docker/volumes/efed8eab2f8e536123f218486a9462d41e70bc0c6bb4c019d1b73cf646c878de/_data/docker/registry/v2/repositories
[root@insure repositories]# ls
hello-world
[root@insure repositories]# ls
dashboard  hello-world

成功完成私有仓库的创建、客户端镜像的上传和下载。

说明：客户端和私有仓库在不同机器的同一个局域网之内，所用IP都是实际IP，非映射之后的IP。

官方地址 https://yeasy.gitbooks.io/docker_practice/repository/registry.html#%E5%AE%89%E8%A3%85%E8%BF%90%E8%A1%8C-docker-registry