解决跟Docker私有仓库登陆，推送，拉取镜像出现的报错

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前言

出现问题：Error response from daemon: Get https://192.168.186.120/v1/users/: dial tcp 192.168.186.120:443: getsockopt: connection refused

http: server gave HTTP response to HTTPS client

出现这问题的原因是：Docker自从1.3.X之后docker registry交互默认使用的是HTTPS，但是搭建私有镜像默认使用的是HTTP服务，所以与私有镜像交时出现以上错误。

解决办法是：在docker server启动的时候，增加启动参数，默认使用HTTP访问：

解决跟Docker私有仓库登陆，推送，拉取镜像出现的报错
https://blog.51cto.com/u_15329153/3371143

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一、解决方案

添加 --insecure-registry ip（harbor的主机IP）

修改好后重启docker 服务

systemctl daemon-reload 
systemctl restart docker

登陆远程仓库报错：Error response from daemon: Get https://192.168.75.12/v2/: dial tcp 192.168.75.12:443: connect: connection refused

vim /etc/docker/daemon.json 
{
   "insecure-registries": ["https://192.168.75.12"]
}

systemctl restart docker

填写上私有仓库地址，注意是https形式
然后再使用docker login http://192.168.75.12进行登陆

然后docker login 到Harbor仓库

docker login http://192.168.4.207
Username: admin
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
[11:53:14 root@dxl-master ~]#docker images
[11:57:35 root@dxl-master ~]#docker tag nginx:1.14  192.168.4.207/base-images/nginx:1.4
[11:58:23 root@dxl-master ~]#docker images
[11:58:25 root@dxl-master ~]#docker push 192.168.4.207/base-images/nginx:1.4