Docker运行hello-world镜像失败或超时_unable to find image \'hello-world:latest\' locally

docker run hello-world时超时告警

​跟着官方文档进行docker安装时，测试docker是否运行成功执行docker run hello-world时，结果和别人的不一样

正常情况：

我们的：

Unable to find image \'hello-world:latest\' locallylatest: Pulling from library/hello-worldc1ec31eb5944: 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：就是我们的镜像源不行，需要更换镜像源

但是我们就算知道原因，去找度娘会发现大部分都是说更换阿里的镜像源，但是我们尝试之后并没有作用

常规方案没作用

#针对Docker客户端版本大于 1.10.0 的用户#您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器sudo mkdir -p /etc/dockersudo tee /etc/docker/daemon.json <<-\'EOF\'{ \"registry-mirrors\": [\"https://5nkcn10r.mirror.aliyuncs.com\"]}EOFsudo systemctl daemon-reloadsudo systemctl restart docker

2.1、解决方案

配置加速地址：设置registry mirror

sudo mkdir -p /etc/dockersudo 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\" ]}EOFsudo systemctl daemon-reloadsudo systemctl restart dockersystemctl status docker

重启完docker之后检查registry mirror刚刚配置的加速地址是否成功

[root@wzy1303 docker]# docker infoClient: 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-composeServer: 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

可以看到我们已经配置成功：
运行docker run hello-world,成功运行

[root@wzy1303 docker]# docker run hello-worldUnable to find image \'hello-world:latest\' locallylatest: Pulling from library/hello-worldc1ec31eb5944: Pull complete Digest: sha256:53cc4d415d839c98be39331c948609b659ed725170ad2ca8eb36951288f81b75Status: Downloaded newer image for hello-world:latestHello 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 bashShare 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镜像[root@wzy1303 docker]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEhello-world latest d2c94e258dcb 15 months ago 13.3kB[root@wzy1303 docker]# docker images -aREPOSITORY TAG IMAGE ID CREATED SIZEhello-world latest d2c94e258dcb 15 months ago 13.3kB[root@wzy1303 docker]# docker images -aqd2c94e258dcb