docker 网络代理设置

最新推荐文章于 2025-07-11 20:00:44 发布

Jinhua_Wei

最新推荐文章于 2025-07-11 20:00:44 发布

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本文链接：https://blog.youkuaiyun.com/Jinhua_Wei/article/details/79439675

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本文介绍了在运行Docker时因网络限制遇到的问题，即无法直接访问国外镜像仓库。为解决这个问题，文章详细讲解了如何设置Docker的网络代理，包括创建http-proxy.conf配置文件、添加代理设置、重新加载配置以及重启Docker服务来验证代理是否生效。

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为什么需要设置代理

在运行docker run 时，首先会检查当前环境是否有对应的镜像，若没有将去docker hub上下载。由于国内长城，基本上不可能直接访问到国外的docker hub。
如下运行hello-world报错：

[root@localhost ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io on [::1]:53: read udp [::1]:39795->[::1]:53: read: connection refused.
See 'docker run --help'.

需为docker设置海外代理，访问docker hub。

为docker 设置代理步骤

创建docker http-proxy.conf文件

mkdir -p /etc/systemd/system/docker.service.d
touch /etc/systemd/system/docker.service.d/http-proxy.conf

在http-proxy.conf代理配置文件中添加代理设置

[Service]
Environment="HTTP_PROXY=http://x.x.x.x:x/"

[Service]
Environment="HTTPS_PROXY=https://x.x.x.x:x/"

重新加载docker配置

systemctl daemon-reload

重启docker

service docker restart

验证代理设置

[root@localhost home]# docker run hello-world

Hello from Docker!

This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://cloud.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide