习Docker的过程中Docker的私有仓库一直没能成功，就是因为CentOS 6.x和CentOS 7默认引入了支持https认证，每次在push和pull的时候都会报错，今天是周末，利用一天的时间反复测试和网上案列的整合，总算是成功了，也借此机会对学习Docker的朋友有所帮助。
个人的愚见：博友在练习的时候建议用CentOS 7.x系统，不建议用CentOS 6.x系统
一、准备
地址规划：
Docker私有仓库地址：192.168.0.109
Docker客户端地址：192.168.0.110
1、激活网卡
# vim /etc/sysconfig/network-scripts/ifcfg-eno16777728
修改此行
ONBOOT=yes
# /etc/init.d/network restart
2、关闭本地防火墙并设置开机不自启动
# systemctl stop firewalld.service
# systemctl disable firewalld.service
3、关闭本地selinux防火墙
# vi /etc/sysconfig/selinux
SELINUX=disabled
# setenforce 0
4、安装ifconfig工具
# yum install net-tools
二、安装
1、安装docker
# yum install docker
# yum upgrade device-mapper-libs
# service docker start
# chkconfig docker on
2、本地私有仓库registry
[root@localhost ~]# docker pull registry
Trying to pull repository docker.io/registry ...
24dd746e9b9f: Download complete
706766fe1019: Download complete
a62a42e77c9c: Download complete
2c014f14d3d9: Download complete
b7cf8f0d9e82: Download complete
d0b170ebeeab: Download complete
171efc310edf: Download complete
522ed614b07a: Download complete
605ed9113b86: Download complete
22b93b23ebb9: Download complete
2ac557a88fda: Download complete
1f3b4c532640: Download complete
27ebaac643a7: Download complete
ce630195cb45: Download complete
Status: Downloaded newer image for docker.io/registry:latest
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
docker.io/registry latest 24dd746e9b9f 3 days ago 413.8 MB
3、基于私有仓库镜像运行容器
[root@localhost ~]# docker run -d -p 5000:5000 -v /opt/data/registry:/tmp/registry docker.io/registry
bb2c0d442df94e281479332c2608ef144f378e71743c5410e36b80c465771a95
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
bb2c0d442df9 docker.io/registry:latest "docker-registry" 10 seconds ago Up 7 seconds 0.0.0.0:5000->5000/tcp serene_hopper
4、访问私有仓库
[root@localhost ~]# curl 127.0.0.1:5000/v1/search
{"num_results": 0, "query": "", "results": []} //私有仓库为空，没有提交新镜像到仓库中
5、从Docker Hub上下载一个ssh镜像
[root@localhost ~]# docker search -s 10 ssh
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io: docker.io/fedora/ssh 18 [OK]
[root@localhost ~]# docker pull fedora/ssh
Trying to pull repository docker.io/fedora/ssh ...
2aeb2b6d9705: Download complete
511136ea3c5a: Download complete
00a0c78eeb6d: Download complete
834629358fe2: Download complete
571e8a51403c: Download complete
87d5d42e693c: Download complete
92b5ef05fe68: Download complete
92d3910dc33c: Download complete
cf2e9fa11368: Download complete
Status: Downloaded newer image for docker.io/fedora/ssh:latest
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
docker.io/registry latest 24dd746e9b9f 3 days ago 413.8 MB
docker.io/fedora/ssh latest 2aeb2b6d9705 9 days ago 254.4 MB
6、创建镜像链接或为基础镜像打个标签
[root@localhost ~]# docker tag docker.io/fedora/ssh 127.0.0.1:5000/ssh
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
docker.io/registry latest 24dd746e9b9f 3 days ago 413.8 MB
docker.io/fedora/ssh latest 2aeb2b6d9705 9 days ago 254.4 MB
127.0.0.1:5000/ssh latest 2aeb2b6d9705 9 days ago 254.4 MB
7、修改Docker配置文件制定私有仓库url
[root@localhost ~]# vim /etc/sysconfig/docker
修改此行
OPTIONS='--selinux-enabled --insecure-registry 192.168.0.109:5000'
[root@localhost ~]# service docker restart
Redirecting to /bin/systemctl restart docker.service
8、提交镜像到本地私有仓库中
[root@localhost ~]# docker push 127.0.0.1:5000/ssh
The push refers to a repository [127.0.0.1:5000/ssh] (len: 1)
Sending image list
Pushing repository 127.0.0.1:5000/ssh (1 tags)
511136ea3c5a: Image successfully pushed
00a0c78eeb6d: Image successfully pushed
834629358fe2: Image successfully pushed
571e8a51403c: Image successfully pushed
87d5d42e693c: Image successfully pushed
92b5ef05fe68: Image successfully pushed
92d3910dc33c: Image successfully pushed
cf2e9fa11368: Image successfully pushed
2aeb2b6d9705: Image successfully pushed
Pushing tag for rev [2aeb2b6d9705] on {http://127.0.0.1:5000/v1/repositories/ssh/tags/latest}
9、查看私有仓库是否存在对应的镜像
[root@localhost ~]# curl 127.0.0.1:5000/v1/search
{"num_results": 1, "query": "", "results": [{"description": "", "name": "library/ssh"}]}
10、查看镜像的存储目录和文件
[root@localhost ~]# tree /opt/data/registry/repositories/
/opt/data/registry/repositories/
└── library
└── ssh
├── _index_images
├── json
├── tag_latest
└── taglatest_json
2 directories, 4 files
三、从私有仓库中下载已有的镜像
1、登陆另外一台Docker客户端
[root@localhost ~]# ssh root@192.168.0.110
The authenticity of host '192.168.0.110 (192.168.0.110)' can't be established.
ECDSA key fingerprint is 5b:81:4b:66:d6:dd:48:16:9f:85:58:72:21:bd:ba:39.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.0.110' (ECDSA) to the list of known hosts.
root@192.168.0.110's password:
Last login: Sun Apr 26 14:39:51 2015 from 192.168.0.103
2、修改Docker配置文件
[root@localhost ~]# vim /etc/sysconfig/docker
修改此行
OPTIONS='--selinux-enabled --insecure-registry 192.168.0.109:5000' //添加私有仓库地址
[root@localhost ~]# service docker restart
Redirecting to /bin/systemctl restart docker.service
3、从私有仓库中下载已有的镜像
[root@localhost ~]# docker pull 192.168.0.109:5000/ssh
Trying to pull repository 192.168.0.109:5000/ssh ...
2aeb2b6d9705: Download complete
511136ea3c5a: Download complete
00a0c78eeb6d: Download complete
834629358fe2: Download complete
571e8a51403c: Download complete
87d5d42e693c: Download complete
92b5ef05fe68: Download complete
92d3910dc33c: Download complete
cf2e9fa11368: Download complete
Status: Downloaded newer image for 192.168.0.109:5000/ssh:latest
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
192.168.0.109:5000/ssh latest 2aeb2b6d9705 9 days ago 254.4 MB
四、浏览器访问仓库