docker运行镜像hello-world遇到的问题_c1ec31eb5944: retrying in 1 second

仅是我遇到问题的解决办法，未必有用
1.输入命令docker run hello-world报错提示

docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.
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原因：docker服务没启动
解决方法：通过启动服务命令解决

systemctl run hello-world
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2.docker run hello-world报错

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Retrying in 1 second 
docker: error pulling image configuration: download failed after attempts=6: dial tcp 173.208.182.68:443: connect: connection refused.
See 'docker run --help'.
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原因：加载镜像源出错
解决方法：配置镜像源

vim /etc/docker/daemon.json
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输入

{
	"registry-mirrors":[
		"https://i1el1i0w.mirror.aliyuncs.com",
		"https://hub-mirror.c.163.com",
		"https://registry.aliyuncs.com",
		"https://registry.docker-cn.com",
		"https://docker.mirrors.ustc.edu.cn"
	]
}
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重启守护进程

sudo systemctl daemon-reload
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重启服务

sudo systemctl restart docker
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