Docker安装（CentOS）

检查配置

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#要求CentOS内核版本高于3.10
uname -r

卸载之前安装

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yum remove docker
yum remove docker-client
…… ……	   docker-client-latest
           docker-common
           docker-latest
           docker-latest-logrotate
           docker-logrotate
		   docker-engine

安装依赖

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yum install -y yum-utils
	……			device-mapper-persistent-data
				lvm2

设置仓库

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yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo	#docker的yum源

#aliyun的yum源
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装Docker

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yum install docker-ce docker-ce-cli containerd.io

#加入开机启动
systemctl start docker
systemctl enable docker

#验证安装 docker -v

镜像加速

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#https://www.aliyun.com/product/acr?spm=5176.202918.1263681.2.1bf54ef51HwG0Z

#管理控制台——镜像加速——操作手册

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://bi7rlmvn.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

#国内源有时无法拉取部分镜像
#可换源
vim /etc/docker/daemon.json

{
"registry-mirrors":["f42ebfb9.m.daocloud.io"]
}
systemctl restart docker	#重启生效

docker info