docker探索-docker私有仓库搭建（九）

前言

本文讲解搭建docker的私有仓库，和Mavan的管理一样，Dockers不仅提供了一个中央仓库，同时也允许我们使用registry搭建本地私有仓库

一、环境

ip	主机名	操作系统	角色
192.168.6.131	node2.jacky.com	7.3.1611	客户端
192.168.6.132	node3.jacky.com	7.3.1611	私有仓库

二、搭建

2.1、在132机器上下载registry镜像

docker pull registry

2.2、防火墙添加运行5000端口

iptables -I INPUT  -p tcp --dport  -j ACCEPT

2.3、创建registry容器，并启动

docker run -d -p : --privileged=true -v /opt/registry:/tmp/registry registry  

说明：

• 默认情况下，会将仓库存放于容器内的/tmp/registry目录下，这样如果容器被删除，则存放于容器中的镜像也会丢失，所以我们一般情况下会指定本地一个目录挂载到容器内的/opt/registry下
• –privileged=true ：CentOS7中的安全模块selinux把权限禁掉了，参数给容器加特权，不加上传镜像会报权限错误(OSError: [Errno 13] Permission denied: ‘/tmp/registry/repositories/liibrary’)或者（Received unexpected HTTP status: 500 Internal Server Error）错误

2.4、客户端修改/etc/sysconfig/docker文件，在后面追加，不加会报https证书错误，然后重启docker

OPTIONS='--insecure-registry 192.168.6.132:5000'    #CentOS 7系统
other_args='--insecure-registry 192.168.6.132:5000' #CentOS 6系统

三、测试

3.1、把本地镜像jacky/mytomcat:1.0的tag

docker tag 3d95a80ccbda 192.168.6.132:/jacky/mytomcat:1.2

结果如下

注意：前缀一定要私有仓库Ip:端口/，否则上传会报错

3.2、上传镜像192.168.6.132:5000/jacky/mytomcat：1.2到私有仓库

docker push 192.168.6.132:/jacky/mytomcat:1.2

3.3、删除该镜像，然后重新下载该镜像

[root@node2 jacky]# docker rmi 192.168.6.132:/jacky/mytomcat:1.2
Untagged: 192.168.6.132:/jacky/mytomcat:1.2
Untagged: 192.168.6.132:/jacky/mytomcat@sha256:da9f7e620ade2c1fb3c4c516cf6c8303045699dba58759f4cf15408a2858228f
[root@node2 jacky]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
jacky/mytomcat      1.0                 3d95a80ccbda         days ago          655.3 MB
jacky/mytomcat      1.1                 3d95a80ccbda         days ago          655.3 MB
jacky/ubuntu        14.05               ff41e3aca80b         days ago          209.1 MB
jacky/ubuntu        dev                 ff41e3aca80b         days ago          209.1 MB
jacky/centos        v3                  67a8ec824059         days ago          326.3 MB
jacky/ubuntu        v2                  9634808b727b         days ago          137.2 MB
docker.io/nginx     latest              40960efd7b8f         weeks ago         108.4 MB
docker.io/ubuntu    14.04               3aa18c7568fc         weeks ago          MB
docker.io/httpd     latest              74ad7f48867f         weeks ago         177.3 MB
docker.io/debian    wheezy              f47fe1c60a2f         weeks ago         85.13 MB
docker.io/busybox   latest              6ad733544a63         weeks ago         1.129 MB
docker.io/centos    7.2.            0a2bad7da9b5         weeks ago         194.6 MB
docker.io/ubuntu    15.10               9b9cb95443b5         months ago       137.2 MB
[root@node2 jacky]# docker pull 192.168.6.132:/jacky/mytomcat:1.2
Trying to pull repository 192.168.6.132:/jacky/mytomcat ...
sha256:da9f7e620ade2c1fb3c4c516cf6c8303045699dba58759f4cf15408a2858228f: Pulling from 192.168.6.132:/jacky/mytomcat
Digest: sha256:da9f7e620ade2c1fb3c4c516cf6c8303045699dba58759f4cf15408a2858228f
Status: Downloaded newer image for 192.168.6.132:/jacky/mytomcat:1.2
[root@node2 jacky]# docker images
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
192.168.6.132:/jacky/mytomcat   1.2                 3d95a80ccbda         days ago          655.3 MB
jacky/mytomcat                      1.0                 3d95a80ccbda         days ago          655.3 MB
jacky/mytomcat                      1.1                 3d95a80ccbda         days ago          655.3 MB
jacky/ubuntu                        14.05               ff41e3aca80b         days ago          209.1 MB
jacky/ubuntu                        dev                 ff41e3aca80b         days ago          209.1 MB
jacky/centos                        v3                  67a8ec824059         days ago          326.3 MB
jacky/ubuntu                        v2                  9634808b727b         days ago          137.2 MB
docker.io/nginx                     latest              40960efd7b8f         weeks ago         108.4 MB
docker.io/ubuntu                    14.04               3aa18c7568fc         weeks ago          MB
docker.io/httpd                     latest              74ad7f48867f         weeks ago         177.3 MB
docker.io/debian                    wheezy              f47fe1c60a2f         weeks ago         85.13 MB
docker.io/busybox                   latest              6ad733544a63         weeks ago         1.129 MB
docker.io/centos                    7.2.            0a2bad7da9b5         weeks ago         194.6 MB
docker.io/ubuntu                    15.10               9b9cb95443b5         months ago       137.2 MB
[root@node2 jacky]# 

可以看到，重新下载了

四、查询私有仓库镜像

在Private Registry2中查看或检索Repository或images，将不能用docker search，会报下边的错误

[root@node2 jacky]# docker search 192.168.6.132:/
Error response from daemon: Unexpected status code
[root@node2 jacky]# curl  http://192.168.6.132:5000/v2/_catalog
{"repositories":["jacky/mytomcat"]}
[root@node2 jacky]# curl  http://192.168.6.132:5000/v2/jacky/mytomcat/tags/list
{"name":"jacky/mytomcat","tags":["1.2"]}
[root@node2 jacky]#