2014-09-05 08:18:02 +00:00
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##部署本地仓库
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由于网络的关系，国内用户在使用docker hub的时候，很难pull一个基本的镜像下来。
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本节介绍如何创建部署本地仓库。
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###安装docker
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参见本文第三小节
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###从文件系统创建一个image镜像
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创建镜像有很多方法，官方的推荐是pull一个，不过在墙内，想pull一个基本的ubuntu都没办法完成。
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这里推荐一个办法就是从一个文件系统import一个镜像，个人推荐可以使用opvz的模板来创建：（openvz可以说是容器虚拟化的先锋吧）
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openvz的模板下载地址如下：
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http://openvz.org/Download/templates/precreated
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下载完之后，比如：下载了一个ubuntu14.04的镜像
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使用以下命令：
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```
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sudo cat ubuntu-14.04-x86_64-minimal.tar.gz |docker import - ubuntu:14.04
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```
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然后用docker images看下：
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```
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docker images
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REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
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ubuntu 14.04 05ac7c0b9383 17 seconds ago 215.5 MB
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```
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就多了一个我们的ubuntu镜像
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###创建私有仓库
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官方指南称最简单的办法是 docker run -p 5000:5000 registry，如果被墙了，也无法下载该images。感谢CSDN，我有一个1M的腾讯云服务器，上面搭建了一个私有仓库大家可以使用
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docker pull 203.195.193.251:5000/registry
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到我的服务器下载 速度虽然慢点，但有保证！
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另外的方法是使用刚才的创建的ubuntu来创建，官方有个docker仓库的源码地址 https://github.com/dotcloud/docker-registry 下载私有仓库的源码，可以根据上面的docker file来创建。
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也可以参考：
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http://www.vpsee.com/2013/11/build-your-own-docker-private-regsitry-service/
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###在私有仓库上传、下载、搜索images
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创建好自己的私有仓库之后，可以使用docker tag 一个镜像，然后push，然后在别的机器上pull下来就好了。这样我们的局域网私有docker仓库就搭建好了。
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步骤如下：
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使用 docker run -p 5000:5000 registry 在局域网的一台机器上开启一个容器之后，我的局域网私有仓库地址为192.168.7.26:5000
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先在本机看下现有的images
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```
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root ~ # docker images
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REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
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ubuntu latest ba5877dc9bec 6 weeks ago 192.7 MB
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ubuntu 14.04 ba5877dc9bec 6 weeks ago 192.7 MB
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使用 docker tag 将ba58这个image标记为192.168.7.26:5000/test
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root ~ # docker tag ba58 -t 192.168.7.26:5000/test
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root ~ # docker images
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REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
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ubuntu 14.04 ba5877dc9bec 6 weeks ago 192.7 MB
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ubuntu latest ba5877dc9bec 6 weeks ago 192.7 MB
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192.168.7.26:5000/test latest ba5877dc9bec 6 weeks ago 192.7 MB
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```
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使用docker push 上传我们标记的新image，这里因为我的服务器上已经有这个images，所有在上传文件层的时候，都跳过了，但是标记还是不一样的。
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```
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root ~ # docker push 192.168.7.26:5000/test
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The push refers to a repository [192.168.7.26:5000/test] (len: 1)
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Sending image list
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Pushing repository 192.168.7.26:5000/test (1 tags)
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Image 511136ea3c5a already pushed, skipping
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Image 9bad880da3d2 already pushed, skipping
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Image 25f11f5fb0cb already pushed, skipping
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Image ebc34468f71d already pushed, skipping
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Image 2318d26665ef already pushed, skipping
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Image ba5877dc9bec already pushed, skipping
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Pushing tag for rev [ba5877dc9bec] on {http://192.168.7.26:5000/v1/repositories/test/tags/latest}
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root ~ # curl http://192.168.7.26:5000/v1/search
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The program 'curl' is currently not installed. You can install it by typing:
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apt-get install curl
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```
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现在的私有仓库只支持这样简陋的搜索方式，如果没有安装curl，可以先安装后再使用
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```
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root ~ # apt-get install curl
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Reading package lists... Done
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Building dependency tree
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Reading state information... Done
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The following NEW packages will be installed:
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curl
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0 upgraded, 1 newly installed, 0 to remove and 570 not upgraded.
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Need to get 123 kB of archives.
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After this operation, 313 kB of additional disk space will be used.
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Get:1 http://192.168.7.26/ubuntu/ trusty/main curl amd64 7.35.0-1ubuntu2 [123 kB]
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Fetched 123 kB in 0s (7457 kB/s)
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Selecting previously unselected package curl.
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(Reading database ... 184912 files and directories currently installed.)
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Preparing to unpack .../curl_7.35.0-1ubuntu2_amd64.deb ...
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Unpacking curl (7.35.0-1ubuntu2) ...
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Processing triggers for man-db (2.6.7.1-1) ...
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Setting up curl (7.35.0-1ubuntu2) ...
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root ~ # curl http://192.168.7.26:5000/v1/search
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{"num_results": 7, "query": "", "results": [{"description": "", "name": "library/miaxis_j2ee"}, {"description": "", "name": "library/tomcat"}, {"description": "", "name": "library/ubuntu"}, {"description": "", "name": "library/ubuntu_office"}, {"description": "", "name": "library/desktop_ubu"}, {"description": "", "name": "dockerfile/ubuntu"}, {"description": "", "name": "library/test"}]}
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```
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这里我们可以看到 {"description": "", "name": "library/test"} 表示我们的image已经被成功上传了。
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现在我们到另外一台机器上下载这个images
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```
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[root@opnvz ~]# docker pull 192.168.7.26:5000/test
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Pulling repository 192.168.7.26:5000/test
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ba5877dc9bec: Download complete
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511136ea3c5a: Download complete
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9bad880da3d2: Download complete
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25f11f5fb0cb: Download complete
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ebc34468f71d: Download complete
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2318d26665ef: Download complete
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[root@opnvz ~]# docker images
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REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
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192.168.7.26:5000/test latest ba5877dc9bec 6 weeks ago 192.7 MB
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```
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这样我们就可以在新的机器上使用这个images了！
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