问题

阿里云服务器docker pull nginx:alpine一直拉取超时，使用阿里云镜像加速也一直重试超时

alpine: Pulling from library/nginx
55afa1ecc21d: Retrying in 1 second
3cd534fe98c6: Retrying in 1 second
1223f016b4e4: Retrying in 1 second
62bec68d7c31: Waiting
46f977ee452f: Waiting
d0008c891db4: Waiting
390dc935348d: Waiting
46519e7231d2: Waiting
alpine: Pulling from library/nginx
55afa1ecc21d: Retrying in 1 second
3cd534fe98c6: Retrying in 1 second
1223f016b4e4: Retrying in 1 second
62bec68d7c31: Waiting
46f977ee452f: Waiting
d0008c891db4: Waiting
390dc935348d: Waiting
46519e7231d2: Waiting
alpine: Pulling from library/nginx
55afa1ecc21d: Pulling fs layer
3cd534fe98c6: Pulling fs layer
1223f016b4e4: Pulling fs layer
62bec68d7c31: Waiting
46f977ee452f: Waiting
d0008c891db4: Waiting
390dc935348d: Waiting
46519e7231d2: Waiting

原因

问了阿里的售后
由于docker对国内路由进行了限制，国内拉取镜像是存在这个问题。这边的加速器也是被限制了，您可以外网搜一下其他可用的加速器配置之后看一下 。

解决

引入下列镜像源

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://2a6bf1988cb6428c877f723ec7530dbc.mirror.swr.myhuaweicloud.com","https://docker.m.daocloud.io","https://hub-mirror.c.163.com","https://mirror.baidubce.com","https://your_preferred_mirror","https://dockerhub.icu","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://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"]
}
EOF

重新加载文件并重启docker

systemctl daemon-reload && systemctl restart docker

重新拉取,查看镜像可以发现拉取成功

[root@dest~]# docker pull nginx:alpine
alpine: Pulling from library/nginx
55afa1ecc21d: Pull complete 
3cd534fe98c6: Pull complete 
1223f016b4e4: Pull complete 
62bec68d7c31: Pull complete 
46f977ee452f: Pull complete 
d0008c891db4: Pull complete 
390dc935348d: Pull complete 
46519e7231d2: Pull complete 
Digest: sha256:4a73073bd557c65b759505da037898b61f1be6cbcc3c2c3aeac22d2a470c1752
Status: Downloaded newer image for nginx:alpine
docker.io/library/nginx:alpine

​