docker私有库搭建过程（Registry）

实验环境：

CentOS7　　1611

Docker　　1.12.6

registry  　　2.0

1、安装并运行registry

安装：

[root@docker01 ~]# docker pull registry

Using default tag: latest

Trying to pull repository docker.io/library/registry ...

latest: Pulling from docker.io/library/registry

79650cf9cc01: Pull complete

70ce42745103: Pull complete

77edd1a7fa4d: Pull complete

432773976ace: Pull complete

3234a47fe5a9: Pull complete

Digest: sha256:a3551c422521617e86927c3ff57e05edf086f1648f4d8524633216ca363d06c2

[root@docker01 ~]# docker images

REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE

docker.io/busybox    latest              c30178c5239f        6 days ago          1.106 MB

docker.io/registry   latest              9d0c4eabab4d        6 weeks ago         33.17 MB

[root@docker01 ~]#

运行：

[root@docker01 ~]# docker run -d -p 5000:5000 -v /mnt/date/registry:/var/lib/registry registry

75841a99e1fc882617bc37d088a8c80abae225cfe2842110f2049600df560a47

[root@docker01 ~]#

-d后台运行

-p指定端口

-v把registry的镜像路径/var/lib/registry映射到本机的/mnt/date/registry

检查5000端口

netstat -an | grep 5000

[root@docker01 ~]# netstat -an | grep 5000

tcp6       0      0 :::5000                 :::*                    LISTEN

[root@docker01 ~]#

telnet 127.0.0.1 5000成功。

[root@docker01 ~]# telnet 127.0.0.1 5000

Trying 127.0.0.1...

Connected to 127.0.0.1.

Escape character is '^]'.

q

HTTP/1.1 400 Bad Request

Content-Type: text/plain

Connection: close

400 Bad RequestConnection closed by foreign host.

[root@docker01 ~]#

2、添加tag标记

[root@registry ~]# docker tag busybox 10.100.50.120:5000/busybox

[root@registry ~]# docker images

REPOSITORY                   TAG                 IMAGE ID            CREATED             SIZE

10.100.50.122:5000/busybox   latest              c30178c5239f        6 days ago          1.106 MB

docker.io/busybox            latest              c30178c5239f        6 days ago          1.106 MB

docker.io/registry           latest              9d0c4eabab4d        6 weeks ago         33.17 MB

[root@registry ~]#

3、上传镜像报错

[root@registry xinetd.d]# docker push 10.100.50.120:5000/busybox

The push refers to a repository [10.100.50.122:5000/busybox]

Get https://10.100.50.120:5000/v1/_ping: http: server gave HTTP response to HTTPS client

[root@registry xinetd.d]#

解决方案：

修改/etc/sysconfig/docker文件，并重新启动docker服务。

ADD_REGISTRY='--add-registry 10.100.50.120:5000'

INSECURE_REGISTRY='--insecure-registry 10.100.50.120:5000'

4、上传镜像

[root@registry ~]# docker push 10.100.50.120:5000/busybox

The push refers to a repository [10.100.50.120:5000/busybox]

3a1dff9afffd: Pushed

latest: digest:     sha256:be3c11fdba7cfe299214e46edc642e09514dbb9bbefcd0d3836c05a1e0cd0642 size: 527

[root@registry ~]#

其他坑：

坑1：

IPV4 forwording报错，但是容器运行正常。

[root@registry mnt]# docker run -d -p 5000:5000 -v /mnt/date/registry registry

WARNING: IPv4 forwarding is disabled. Networking will not work.

970e18480c47661fd2cffab9f7e0410989e62ed9d229333cb32e5727a2e88b3b

[root@registry mnt]#

解决方案：

在/etc/sysctl.conf文件中加入net.ipv4.ip_forward=1并重启网络服务。

修改后正常：

[root@registry mnt]# docker run -d -p 5000:5000 -v /mnt/date/registry registry

abbec57e5dca734689cfd953f27564156ec24e32ae6e532043309f0332653650

[root@registry mnt]# docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES

abbec57e5dca        registry            "/entrypoint.sh /etc/"   31 seconds ago      Up 30 seconds       0.0.0.0:5000->5000/tcp   compassionate_mclean

[root@registry mnt]#

坑2：

查看镜像存放位置显示404 page not found网上很多教程都是下面这个命令

[root@docker01 ~]# curl http://10.100.50.122:5000/v2/search

404 page not found

通过docker search registry发现安装的是2.0版本。

V2的命令格式如下：

http://10.100.50.122:5000/v2/_catalog[root@docker01 ~]# curl -X GET

{"repositories":["busybox","centos"]}

[root@docker01 ~]#

http://www.jianshu.com/p/fc36368b5c44文档：