构建 Docker registry 私有镜像，解决docker私有仓库push出错问题

构建 Docker registry 私有镜像，解决docker私有仓库push出错问题

适用于：Docker 1.8      环境：Centos7

每个版本的docker修改配置内容都不同，请大家看好安装的docker版本。

1）下载 docker registry私有镜像

# docker pull docker.io/registry

2）修改配置文件

# gedit /etc/sysconfig/docker

OPTIONS='--selinux-enabled --insecure-registry 192.168.137.17:5000'

注：红色IP为修改的部分

3）从容器中启动Registry

# docker run -d -p 5000:5000 --name registry -v /home/dockeruser/data:/tmp/registry  docker.io/registry

注：-d 表示该容器在后台运行

-p将主机的5000端口与容器的5000端口映射

--name 将容器的名称命名为registry

-v 表示将镜像的存储位置“/tmp/registry” 变更为宿主机的“/home/dockeruser/data”

注：这一步一定要在步骤2）之后，否则修改配置文件不会生效

4）在上传到私有的registry之前，需要指定新的Registry目的地址，需要在镜像名前加上

主机名和端口的前缀。

#docker images  node/helloworld

得到22d56cbd9e6

#docker tag  22d56cbd9e6  192.168.137.17:5000/node/helloworld

注：192.168.137.17:5000 为所在主机的IP地址和端口

5）将打标签的镜像上传到私有库

# docker push 192.168.137.17:5000/node/helloworld

显示信息如下：

The push refers to a repository [192.168.137.17:5000/node/helloworld] (len: 1)

Sending image list

Pushing repository 192.168.137.17:5000/node/helloworld (1 tags)

d8bd0657b25f: Image successfully pushed

a582cd499e0f: Image successfully pushed

3c3e582d88fa: Image successfully pushed

625e77fff1a8: Image successfully pushed

a00e4cef421d: Image successfully pushed

f543704611ec: Image successfully pushed

c32f3278cf8f: Image successfully pushed

5c88f029bcb1: Image successfully pushed

d3533bde148f: Image successfully pushed

6a06ae308acc: Image successfully pushed

9d1508e155f4: Image successfully pushed

f3c0db6d5143: Image successfully pushed

df45579dbc81: Image successfully pushed

Pushing tag for rev [df45579dbc81] on

{http://192.168.137.17:5000/v1/repositories/node/helloworld/tags/latest}

 

遇到问题：

The push refers to a repository [192.168.137.17:5000/node/helloworld] (len: 1)

unable to ping registry endpoint https://192.168.137.17:5000/v0/

v2 ping attempt failed with error: Get https://192.168.137.17:5000/v2/: dial tcp 192.168.137.17:5000: connection refused

 v1 ping attempt failed with error: Get https://192.168.137.17:5000/v1/_ping: dial tcp 192.168.137.17:5000: connection refused

解决方案：

# gedit /etc/sysconfig/docker

OPTIONS='--selinux-enabled --insecure-registry 192.168.137.17:5000'

注：这一步一定要在创建私有仓库的容器之前【步骤2）】，否则修改配置文件不会生效

吐槽：网上各种答案都有，确不说明 docker 是哪个版本。每个版本的 docker 修改配置内容都不同。