现象:centos中运行sudo docker pull mysql:8.0

提示Error response from daemon: Get "https://registry-1.docker.io/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

/etc/docker/daemon.json

解决办法:

1.修改/etc/docker/daemon.json文件

先修改这个文件的访问权限

sudo chmod 777  /etc/docker/daemon.json

然后用vim打开文件,将文件中 registry-mirrors的值修改为

 [ "https://mirror.aliyuncs.com", "https://mirror.ccs.tencentyun.com", "https://mirror.baidubce.com", "https://docker.mirrors.ustc.edu.cn", "https://docker.nju.edu.cn", "https://docker.m.daocloud.io"]

如下

2.重启docker即可

sudo systemctl restart docker

再拉取就能访问了