Docker運行hello-world鏡像失敗或超時的問題

更新時間：2024年09月18日 10:20:07 作者：wang-1303

在安裝Docker并嘗試運行hello-world時,可能會遇到超時問題,這通常是由于默認的鏡像源訪問速度慢造成的,解決這個問題的辦法是更換鏡像源,雖然許多人推薦使用阿里云的鏡像源,對Docker hello-world超時問題感興趣的朋友一起看看吧

docker run hello-world時超時告警

? 跟著官方文檔進行docker安裝時，測試docker是否運行成功執(zhí)行docker run hello-world時，結果和別人的不一樣

正常情況：

我們的：

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Retrying in 10 seconds 
docker: error pulling image configuration: download failed after attempts=6: dial tcp 128.242.245.93:443: connect: connection refused.
See 'docker run --help'.

原因：就是我們的鏡像源不行，需要更換鏡像源

但是我們就算知道原因，去找度娘會發(fā)現(xiàn)大部分都是說更換阿里的鏡像源，但是我們嘗試之后并沒有作用

常規(guī)方案沒作用

#針對Docker客戶端版本大于 1.10.0 的用戶
#您可以通過修改daemon配置文件/etc/docker/daemon.json來使用加速器
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://5nkcn10r.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

2.1、解決方案

配置加速地址：設置registry mirror

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "https://do.nark.eu.org",
        "https://dc.j8.work",
        "https://docker.m.daocloud.io",
        "https://dockerproxy.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://docker.nju.edu.cn"
    ]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
systemctl status docker

重啟完docker之后檢查registry mirror剛剛配置的加速地址是否成功

[root@wzy1303 docker]# docker info
Client: Docker Engine - Community
 Version:    26.1.4
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.14.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.27.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose
Server:
 Containers: 1
  Running: 0
  Paused: 0
  Stopped: 1
 Images: 1
 Server Version: 26.1.4
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: d2d58213f83a351ca8f528a95fbd145f5654e957
 runc version: v1.1.12-0-g51d5e94
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
 Kernel Version: 3.10.0-1160.119.1.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 2.761GiB
 Name: wzy1303
 ID: 74efae68-ef43-45a9-b547-ffa2c3805423
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Username: inkling1303
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://do.nark.eu.org/
  https://dc.j8.work/
  https://docker.m.daocloud.io/
  https://dockerproxy.com/
  https://docker.mirrors.ustc.edu.cn/
  https://docker.nju.edu.cn/
 Live Restore Enabled: false

可以看到我們已經(jīng)配置成功：

運行docker run hello-world,成功運行

[root@wzy1303 docker]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Pull complete 
Digest: sha256:53cc4d415d839c98be39331c948609b659ed725170ad2ca8eb36951288f81b75
Status: Downloaded newer image for hello-world:latest
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/
For more examples and ideas, visit:
 https://docs.docker.com/get-started/
#查看是否成功拉取hello-world鏡像
[root@wzy1303 docker]# docker images
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   15 months ago   13.3kB
[root@wzy1303 docker]# docker images -a
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   15 months ago   13.3kB
[root@wzy1303 docker]# docker images -aq
d2c94e258dcb

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