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