来自守护进程的错误响应：获取“https://registry-1.docker.io/v2/”：proxyconnect tcp：拨打tcp：在8.8.8.8:53上查找proxy.example.com：没有这样的主机

Question

我得到的错误：

pegasus@pegasus:~/Downloads/Docker_deb$ sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: Get "https://registry-1.docker.io/v2/": proxyconnect tcp: dial tcp: lookup proxy.example.com on 8.8.8.8:53: no such host.
See 'docker run --help'.

我使用以下说明安装了 docker：

但是当我使用以下命令时出现错误。

pegasus@pegasus:~/Downloads/Docker_deb$ sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: Get "https://registry-1.docker.io/v2/": proxyconnect tcp: dial tcp: lookup proxy.example.com on 8.8.8.8:53: no such host.
See 'docker run --help'.

pegasus@pegasus:~$ sudo dockerd --debug
INFO[2024-06-25T04:10:55.092883645+06:00] Starting up                                  
DEBU[2024-06-25T04:10:55.093453907+06:00] Listener created for HTTP on unix (/var/run/docker.sock) 
DEBU[2024-06-25T04:10:55.110352598+06:00] Golang's threads limit set to 110340         
DEBU[2024-06-25T04:10:55.110827666+06:00] metrics API listening on /var/run/docker/metrics.sock 
DEBU[2024-06-25T04:10:55.113904708+06:00] Using default logging driver json-file       
DEBU[2024-06-25T04:10:55.114060596+06:00] No quota support for local volumes in /var/lib/docker/volumes: Filesystem does not support, or has not enabled quotas 
DEBU[2024-06-25T04:10:55.114096006+06:00] processing event stream                       module=libcontainerd namespace=plugins.moby
DEBU[2024-06-25T04:10:56.076431002+06:00] Cleaning up old mountid : start.             
failed to start daemon: error while opening volume store metadata database (/var/lib/docker/volumes/metadata.db): timeout

Answer 1

查看

/etc/docker/daemon.json

文件。我可以让 docker 复制此行为的唯一方法是在 daemon.json 中设置以下内容

root@vps-b21d2eed:/etc/docker# cat daemon.json
{
  "proxies": {
    "http-proxy": "http://proxy.example.com:3128",
    "https-proxy": "https://proxy.example.com:3129",
    "no-proxy": "*.test.example.com,.example.org,127.0.0.0/8"
  }
}

重新启动 docker 服务后出现此错误

root@vps-b21d2eed:/etc/docker# docker run -it  hello-world
Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: Get "https://registry-1.docker.io/v2/": proxyconnect tcp: dial tcp: lookup proxy.example.com on 127.0.0.53:53: no such host.
See 'docker run --help'.

如果我删除

daemon.json

中的代理配置，然后运行

sudo systemctl restart docker

然后它会再次工作

root@vps-b21d2eed:/etc/docker# docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
Digest: sha256:94323f3e5e09a8b9515d74337010375a456c909543e1ff1538f5116d38ab3989
Status: Image is up to date for hello-world:latest
docker.io/library/hello-world:latest