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私有云单机仓库Docker Registry

Docker Registry 介绍

Docker Registry作为Docker的核心组件之一负责镜像内容的存储与分发,客户端的docker pull以及push命令都将直接与registry进行交互,最初版本的registry 由Python实现,由于设计初期在安全性,性能以及API的设计上有着诸多的缺陷,该版本在0.9之后停止了开发,由新项目distribution(新的docker register被称为Distribution)来重新设计并开发下一代registry,新的项目由go语言开发,所有的API,底层存储方式,系统架构都进行了全面的重新设计已解决上一代registry中存在的问题,2016年4月份registry 2.0正式发布,docker 1.6版本开始支持registry 2.0,而八月份随着docker 1.8 发布,docker hub正式启用2.1版本registry全面替代之前版本 registry,新版registry对镜像存储格式进行了重新设计并和旧版不兼容,docker 1.5和之前的版本无法读取2.0的镜像,另外,Registry 2.4版本之后支持了回收站机制,也就是可以删除镜像了,在2.4版本之前是无法支持删除镜像的,所以如果你要使用最好是大于Registry 2.4版本的

官方文档地址:https://docs.docker.com/registry/

官方github 地址:https://github.com/docker/distribution

官方部署文档:https://github.com/docker/docker.github.io/blob/master/registry/deploying.md

docker-Docker Registry私有仓库插图
docker-Docker Registry私有仓库插图(1)

以下介绍通过官方提供的docker registry 镜像来简单搭建本地私有仓库环境

环境:三台主机

10.0.0.100:充当registry仓库服务器

10.0.0.101:上传镜像

10.0.0.102:下载镜像

下载docker registry镜像
[root@ubuntu1804 ~]#docker pull registry:2.7.1
[root@ubuntu1804 ~]#docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
registry            2.7.1               708bc6af7e5e        6 days ago          25.8MB
搭建单机仓库
创建授权用户密码使用目录
[root@ubuntu1804 ~]#mkdir -p  /etc/docker/auth
创建授权的registry用户

创建registry用户,用于上传和下载镜像

[root@ubuntu1804 ~]#docker run --entrypoint htpasswd registry:2.7.1 -Bbn wang 123456 > /etc/docker/auth/registry
[root@ubuntu1804 ~]#cat /etc/docker/auth/registry
wang:2y05$nlRIIYEUBTSLdN2PkzodUue4ry7X/UyscpkkEufTDhEdI8nsyJMR6
启动docker registry 容器
[root@ubuntu1804 ~]# docker run -d -p 5000:5000 --restart=always --name registry  -v /etc/docker/auth:/auth -e "REGISTRY_AUTH=htpasswd" -e "REGISTRY_AUTH_HTPASSWD_REALM=Registry Realm" -e REGISTRY_AUTH_HTPASSWD_PATH=/auth/registry registry:2.7.1
998f970dd8ca6b98002f20ae27330fe607ca78f35bedcc8a6180688e48a907a7

[root@docker-server1 docker]# docker run -d -p 5000:5000 –restart=always –name registry1 -v /docker/auth:/auth -e "REGISTRY_AUTH=htpasswd" -e "REGISTRY_AUTH_HTPASSWD_REALM=Registry Realm" -e REGISTRY_AUTH_HTPASSWD_PATH=/auth/htpasswd registryce659e85018bea3342045f839c43b66de1237ce5413c0b6b72c0887bece5325a

验证端口和容器
[root@ubuntu1804 ~]#docker ps 
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                    NAMES
998f970dd8ca        registry:2.7.1      "/entrypoint.sh /etc…"   About a minute ago   Up About a minute   0.0.0.0:5000->5000/tcp   registry

[root@ubuntu1804 ~]#ss -ntl
State           Recv-Q            Send-Q                        Local Address:Port                        Peer Address:Port           
LISTEN          0                 64                                  0.0.0.0:2049                             0.0.0.0:*              
LISTEN          0                 128                                 0.0.0.0:48131                            0.0.0.0:*              
LISTEN          0                 128                                 0.0.0.0:33835                            0.0.0.0:*              
LISTEN          0                 128                                 0.0.0.0:58029                            0.0.0.0:*              
LISTEN          0                 128                                 0.0.0.0:111                              0.0.0.0:*              
LISTEN          0                 128                           127.0.0.53%lo:53                               0.0.0.0:*              
LISTEN          0                 128                                 0.0.0.0:22                               0.0.0.0:*              
LISTEN          0                 64                                  0.0.0.0:46429                            0.0.0.0:*              
LISTEN          0                 128                               127.0.0.1:6014                             0.0.0.0:*              
LISTEN          0                 64                                     [::]:2049                                [::]:*              
LISTEN          0                 128                                       *:5000                                   *:*              
LISTEN          0                 128                                    [::]:39471                               [::]:*              
LISTEN          0                 128                                    [::]:111                                 [::]:*              
LISTEN          0                 64                                     [::]:43601                               [::]:*              
LISTEN          0                 128                                    [::]:56725                               [::]:*              
LISTEN          0                 128                                    [::]:22                                  [::]:*              
LISTEN          0                 128                                    [::]:57881                               [::]:*              
LISTEN          0                 128                                   [::1]:6014                                [::]:*   
登录仓库
直接登录报错
[root@ubuntu1804 ~]#docker login 10.0.0.100:500
Username: wang
Password: 
Error response from daemon: Get https://10.0.0.100:500/v2/: dial tcp 10.0.0.100:500: connect: connection refused
将registry仓库服务器地址加入service 单元文件
[root@ubuntu1804 ~]#vim /lib/systemd/system/docker.service
[root@ubuntu1804 ~]#grep ExecStart /lib/systemd/system/docker.service
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry 10.0.0.100:5000

[root@ubuntu1804 ~]#systemctl daemon-reload 
[root@ubuntu1804 ~]#systemctl restart docker
[root@ubuntu1804 ~]#ps aux|grep dockerd
root       2092  1.3  8.4 757088 83056 ?        Ssl  19:19   0:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry 10.0.0.100:5000
root       2233  0.0  0.1  14428  1012 pts/0    S+   19:20   0:00 grep --color=auto dockerd
再次登录验证成功

在10.0.0.101主机上执行下面登录

[root@ubuntu1804 ~]#docker login 10.0.0.100:5000
Username: wang
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
[root@ubuntu1804 ~]#
打标签并上传镜像

在10.0.0.101主机上执行打标签上传

[root@ubuntu1804 ~]#docker tag centos7-base:v1 10.0.0.100:5000/centos7-base:v1
[root@ubuntu1804 ~]#docker push 10.0.0.100:5000/centos7-base:v1
The push refers to repository [10.0.0.100:5000/centos7-base]
2073413aebd6: Pushed 
6ec9af97c369: Pushed 
034f282942cd: Pushed 
v1: digest: sha256:02cd943f2569c7c55f08a979fd9661f1fd7893c424bca7b343188654ba63d98d size: 949
下载镜像并启动容器

在10.0.0.102主机上下载镜像并启动容器

先修改docker的service 文件
[root@ubuntu1804 ~]#vim /lib/systemd/system/docker.service
[root@ubuntu1804 ~]#grep ExecStart /lib/systemd/system/docker.service
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry 10.0.0.100:5000
[root@ubuntu1804 ~]#systemctl daemon-reload 
[root@ubuntu1804 ~]#systemctl restart docker
登录registry仓库服务器
[root@ubuntu1804 ~]#docker login 10.0.0.100:5000
Username: wang
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
下载镜像并启动容器
[root@ubuntu1804 ~]#docker images 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
[root@ubuntu1804 ~]#docker pull  10.0.0.100:5000/centos7-base:v1
v1: Pulling from centos7-base
f34b00c7da20: Pull complete 
544476d462f7: Pull complete 
39345915aa1b: Pull complete 
Digest: sha256:02cd943f2569c7c55f08a979fd9661f1fd7893c424bca7b343188654ba63d98d
Status: Downloaded newer image for 10.0.0.100:5000/centos7-base:v1
10.0.0.100:5000/centos7-base:v1
[root@ubuntu1804 ~]#docker images 
REPOSITORY                     TAG                 IMAGE ID            CREATED             SIZE
10.0.0.100:5000/centos7-base   v1                  34ab3afcd3b3        2 days ago          403MB
[root@ubuntu1804 ~]#docker run -it --rm  34ab3afcd3b3 bash
[root@2bcb26b1b568 /]# cat /etc/redhat-release 
CentOS Linux release 7.7.1908 (Core)
[root@2bcb26b1b568 /]# exit
exit
[root@ubuntu1804 ~]#docker ps 
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[root@ubuntu1804 ~]#

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docker-阿里云docker镜像仓库

docker-分布式镜像仓库Harbor

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