当从docker harbor私服拉取镜像时，报如下错误
[root@node02 ~]# docker login 192.168.40.132
Username: admin
Password:
Error response from daemon: Get https://192.168.40.132/v2/: Get https://harbor/service/token?account=admin&client_id=docker&offline_token=true&service=harbor-registry: dial tcp: lookup harbor on 192.168.40.2:53: no such host
因为在拉取镜像时会调用harbor服务接口，这里因找不到harbor域名报错，在hosts文件中增加域名映射即可
vi /etc/hosts
192.168.40.132 harbor
Original: https://www.cnblogs.com/zbzSH/p/16535391.html
Author: zbzSH
Title: 私有镜像仓库harbor 登录报错 tcp: lookup harbor on 192.168.40.2:53: no such host
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