CentOS搭建docker-registry仓库

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在CentOS上搭建docker私服

环境：

  • IP:
    0.0.0.50(Docker Registry Server)
    0.0.0.59(Docker client )

  • OS: CentOS Linux release 7.2.1511 (Core)

  • Docker Version: Docker version 1.12.0, build 8eab29e

Step 1: 以下操作运行在0.0.0.50(Docker Registry Server)上

安装docker-registry, 运行以下命令
docker run -d -e SETTINGS_FLAVOR=dev -e STORAGE_PATH=/tmp/registry -v /opt/data/registry:/tmp/registry -p 5000:5000 registry

安装，启动好之后，运行访问这个URL来验证是否成功：
[root@ct7 system]# curl http://0.0.0.50:5000/v1/_ping 404 page not found

如果有如下返回值则代表成功，无返回则说明进程没有启动，把所有的container都删除然后在重新启动
docker rm $(docker ps -a -q)
docker run -d -e SETTINGS_FLAVOR=dev -e STORAGE_PATH=/tmp/registry -v /opt/data/registry:/tmp/registry -p 5000:5000 registry

Step 2: 以下操作运行在0.0.0.59(Docker client)上

1.查看当前的images

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[root@ct7 system]# docker images
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
gethue/hue                          latest              f7f2abf45534        4 months ago        2.284 GB

2.查看当前所有的container

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[root@ct7 system]# docker ps -a
CONTAINER ID        IMAGE                               COMMAND             CREATED             STATUS                      PORTS                    NAMES
5b45fcfb4c4c        gethue/hue:latest                   "bash"              2 weeks ago         Up 31 minutes               0.0.0.0:8888->8888/tcp   high_lovelace
--container没有起来，运行如下命令：
[root@ct7 system]# docker start 5b45fcfb4c4c

3.查看当前运行的container

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[root@ct7 system]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                    NAMES
5b45fcfb4c4c        gethue/hue:latest   "bash"              2 weeks ago         Up 34 minutes       0.0.0.0:8888->8888/tcp   high_lovelace

4.Create a new image from a container’s changes

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[root@ct7 system]# docker commit 5b45fcfb4c4c 0.0.0.50:5000/hue-v1
sha256:8f41bc37f2b4164c79a9924ca9b6f38581a7ca8f50e60d2ac49818a765c35f09
[root@ct7 system]# docker images
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
0.0.0.50:5000/hue-v1           latest              8f41bc37f2b4        15 seconds ago      2.57 GB

5.push new image into docker private registry

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[root@ct7 system]# docker push 0.0.0.50:5000/hue-v1
The push refers to a repository [0.0.0.50:5000/hue-v1]
eb8378240c72: Pushed
1e71236cfd2b: Pushed
fccab3c2b82b: Pushed
30c28efdecff: Pushed
634827038ea7: Pushed
8f22c1173848: Pushed
8191da9e7f9a: Pushed
173f1156fe76: Pushed
5b771cc18969: Pushed
ae16cd6221a3: Pushed
7dce18002c8d: Pushed
5f70bf18a086: Pushed
6f8be37bd578: Pushed
9f7ab087e6e6: Pushed
dc109d4b4ccf: Pushed
a7e1c363defb: Pushed
latest: digest: sha256:b9ee12c606e3da3554b3f5df9f88364eb8986b1f6fe1ae625542c8e3343e1627 size: 3691
——————————————————————————————————————————————————————————————————————————————————————
如果push的时候报以下错误时："server gave HTTP response to HTTPS client"
创建/etc/docker/daemon.json文件，并写入
[root@ct7 system]# more /etc/docker/daemon.json
{ "insecure-registries":["0.0.0.50:5000"] }
然后重启docker：
[root@ct7 system]# service docker restart

6.verify the new image from docker private registry

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--删除old image
[root@ct7 system]# docker images
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
0.0.0.50:5000/hue-v1           latest              9095f95a6f9f        18 hours ago        2.57 GB
[root@ct7 system]# docker rmi 0.0.0.50:5000/hue-v1
Untagged: 0.0.0.50:5000/hue-v1:latest
Deleted: sha256:9095f95a6f9fb97de276752db6a5dd44bf279b58cfdf4c723c48090b6ef3a5f5
Deleted: sha256:8a560d1d95af6e2436ba2ff73125b383bef343e6e6d4ff45c3dc61352342c7c8
——————————————————————————————————————————————————————————————————————————————————————
--查看docker registry images
[root@ct7 system]# curl http://0.0.0.50:5000/v1/search
404 page not found
网上都用这个curl http://0.0.0.50:5000/v1/search,但是报404 page not found，后查证是v1版本的api查看方式，我们现在的版本是v2，所以用如下方法查看：
curl -X GET http://0.0.0.50:5000/v2/_catalog
[root@ct7 system]# curl -X GET http://0.0.0.50:5000/v2/_catalog
{"repositories":["centos7-python","hue-v1"]}
——————————————————————————————————————————————————————————————————————————————————————
-- pull new images
[root@ct7 system]# docker pull 0.0.0.50:5000/hue-v1
[root@ct7 system]# docker images
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
0.0.0.50:5000/hue-v2           latest              1905f45f6154        15 hours ago        2.486 GB
0.0.0.50:5000/hue-v1           latest              8f41bc37f2b4        20 hours ago        2.57 GB
由于commit方式不会保存mount的数据，所以需要对应用做如下操作
The commit operation will not include any data contained in volumes mounted inside the container.
root@3201bbe4b443:/home/tony/hue# scp 0.0.0.58:/storage/software/hue/pseudo-distributed.ini /hue/desktop/conf/pseudo-distributed.ini
source /etc/profile
root@3201bbe4b443:/home/tony/hue# /home/tony/hue/start_hue.sh