容器技术之Docker私有镜像仓库docker-distribution

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容器技术之Docker私有镜像仓库docker-distribution

　在前边的博客中我们说到docker的架构由docker客户端、服务端以及仓库组成；docker仓库就是用来存放镜像的地方；其实docker registry我们理解为存放docker镜像仓库的仓库比较准确吧；因为docker的镜像仓库通常是把同一类的镜像用不同的版本来区别，而registry则是用来存放这些仓库的仓库；默认安装docker都是从dockerhub镜像仓库下载镜像；其实在生产环境中，我们很少去公有仓库上下载镜像，原因之一是公有仓库中的镜像在生产环境中使用，有些不适配，通常我们是去公有仓库下载基础镜像，然后基于基础镜像构建适合自己生产环境中的镜像；其次公有仓库镜像有很多都不是安全的镜像，这么说吧，我们不确定自己下载的镜像是否有后门，是否有挖矿代码，所以基于种种因素，我们还是有必要搭建自己私有的镜像仓库；今天我们就来聊一聊docker的私有镜像仓库的搭建；

　　1、查看docker-distribution包简介

				
										[root@docker_registry ~]# yum info docker-distribution

										Loaded plugins: fastestmirror

										Loading mirror speeds from cached hostfile

										 * base: mirrors.aliyun.com

										 * extras: mirrors.aliyun.com

										 * updates: mirrors.aliyun.com

										Available Packages

										Name        : docker-distribution

										Arch        : x86_64

										Version     : 2.6.2

										Release     : 2.git48294d9.el7

										Size        : 3.5 M

										Repo        : extras/7/x86_64

										Summary     : Docker toolset to pack, ship, store, and deliver content

										URL         : https://github.com/docker/distribution

										License     : ASL 2.0

										Description : Docker toolset to pack, ship, store, and deliver content

										[root@docker_registry ~]#

　　提示：docker-distribution这个包就是提供简单仓库服务软件实现；

　　2、安装docker-distribution

				
										[root@docker_registry ~]# yum install -y docker-distribution

										Loaded plugins: fastestmirror

										Loading mirror speeds from cached hostfile

										 * base: mirrors.aliyun.com

										 * extras: mirrors.aliyun.com

										 * updates: mirrors.aliyun.com

										Resolving Dependencies

										There are unfinished transactions remaining. You might consider running yum-complete-transaction, or "yum-complete-transaction --cleanup-only" and "yum history redo last", first to finish them. If those don't work you'll have to try removing/installing packages by hand (maybe package-cleanup can help).

										The program yum-complete-transaction is found in the yum-utils package.

										--> Running transaction check

										---> Package docker-distribution.x86_64 0:2.6.2-2.git48294d9.el7 will be installed

										--> Finished Dependency Resolution

										Dependencies Resolved

										===================================================================================================================

										 Package                         Arch               Version                               Repository          Size

										===================================================================================================================

										Installing:

										 docker-distribution             x86_64             2.6.2-2.git48294d9.el7                extras             3.5 M

										Transaction Summary

										===================================================================================================================

										Install  1 Package

										Total download size: 3.5 M

										Installed size: 12 M

										Downloading packages:

										docker-distribution-2.6.2-2.git48294d9.el7.x86_64.rpm                                       | 3.5 MB  00:00:03    

										Running transaction check

										Running transaction test

										Transaction test succeeded

										Running transaction

										  Installing : docker-distribution-2.6.2-2.git48294d9.el7.x86_64                                               1/1

										  Verifying  : docker-distribution-2.6.2-2.git48294d9.el7.x86_64                                               1/1

										Installed:

										  docker-distribution.x86_64 0:2.6.2-2.git48294d9.el7                                                             

										Complete!

										[root@docker_registry ~]#

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