Docker运行hello-world镜像失败或超时

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#docker #eureka #java

Docker运行hello-world镜像失败或超时

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


> #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/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、解决方案

配置加速地址：设置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 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