centos7 使用docker run hello-world报错，无法获取镜像

最新推荐文章于 2025-07-16 21:31:02 发布

冬生草

最新推荐文章于 2025-07-16 21:31:02 发布

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文章标签： Linux docker

本文链接：https://blog.youkuaiyun.com/weixin_42825721/article/details/89601526

本文介绍了一种解决Docker在拉取镜像时遇到超时错误的方法，通过配置DNS为8.8.8.8并重启服务，成功解决了Docker无法从Docker Hub拉取'hello-world'镜像的问题。

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错误示例：

[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/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).
See 'docker run --help'.

查找过程就不多说了，直接说解决方法：

[root@localhost network-scripts]# vi ifcfg-ens33 
DNS1=8.8.8.8

配置DNS=8.8.8.8，然后重启服务。
在运行即可，如下：

[root@localhost network-scripts]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete 
Digest: sha256:92695bc579f31df7a63da6922075d0666e565ceccad16b59c3374d2cf4e8e50e
Status: Downloaded newer image for hello-world:latest
WARNING: IPv4 forwarding is disabled. Networking will not work.

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://hub.docker.com/