一、报错

docker 拉取镜像报错Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for conn

二、解决方案

1、更换源

修改 /etc/docker/daemon.json文件

 vim /etc/docker/daemon.json

2、导入镜像

{
"registry-mirrors": ["https://docker.registry.cyou",
"https://docker-cf.registry.cyou",
"https://dockercf.jsdelivr.fyi",
"https://docker.jsdelivr.fyi",
"https://dockertest.jsdelivr.fyi",
"https://mirror.aliyuncs.com",
"https://dockerproxy.com",
"https://mirror.baidubce.com",
"https://docker.m.daocloud.io",
"https://docker.nju.edu.cn",
"https://docker.mirrors.sjtug.sjtu.edu.cn",
"https://docker.mirrors.ustc.edu.cn",
"https://mirror.iscas.ac.cn",
"https://docker.rainbond.cc"]
}

3、重启docker

systemctl daemon-reload 

systemctl restart docker