docker login提示dial tcp: lookup on 8.8.8.8:53: no such host失败

下载docker后，当需要push镜像到公司仓库或者私有仓库时，需要先login.

 

1. 登录时，出现了

hadoop@slave3:/etc/docker$ docker login xxxxx
Username: dingheng
Password: 
Error response from daemon: Get https:/xxxxx/: dial tcp: lookup xxxxx on 8.8.8.8:53: no such host

 

2. 这一看就属于DNS问题，因此需要找到linux环境下的/etc/resolv.conf

vim /etc/resolv.conf

 

 

 

这个nameserver 8.8.8.8出现很怪.google求之。

Editing the DNS nameserver in /etc/resolv.conf file helped me.

Change your existing nameserver to google nameserver i.e., x.x.x.x to 8.8.8.8

因此直接注释改行：

 

 

3. 重启docker。 

　　service docker restart

 

4. 再次login,成功。

hadoop@slave3:~$ ^C
hadoop@slave3:~$ docker login xxxxx
Username: dingheng
Password: 
WARNING! Your password will be stored unencrypted in /home/hadoop/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
hadoop@slave3:~$ docker logout