CentOS 7 安装 docker

配置环境

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关闭防火墙和selinux

systemctl stop firewalld && systemctl disable firewalld
sed -i '/^SELINUX=/s/enforcing/disabled/' /etc/selinux/config
setenforce 0

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设置时间同步

timedatectl set-timezone Asia/Shanghai   # 可修改时区为上海+08时区
timedatectl   # 获取系统时间和时区

yum install ntp -y     # 安装ntp时间服务器
sed -i 's/server 0.centos.pool.ntp.org iburst/server ntp1.aliyun.com iburst/' /etc/ntp.conf  # 使用aliyun NTP服务
sed -i '/1.centos.pool.ntp.org/s/^/#/' /etc/ntp.conf
sed -i '/2.centos.pool.ntp.org/s/^/#/' /etc/ntp.conf
sed -i '/3.centos.pool.ntp.org/s/^/#/' /etc/ntp.conf

systemctl start ntpd  &&  systemctl enable ntpd  # 启动ntp时间服务并设置开机启动

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安装常用软件：

yum -y install vim wget net-tools lrzsz telnet bind-utils bash-completion

安装 docker

#删除旧版docker

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

#下载 yum工具包

yum install -y yum-utils

#设置docker仓库

yum-config-manager \
	--add-repo \
	https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo              

#安装docker

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

#启动docker并设置开机自启

 systemctl start docker && systemctl enable  docker

#查看安装的docker版本

 docker version

#运行hello-world镜像

docker run hello-world

配置镜像加速

由于国内网络问题拉取 Docker 镜像会十分缓慢，所以可以添加镜像加速。

vi /etc/docker/daemon.json  #编辑镜像加速文件
#以下是文件内容
{
  "registry-mirrors": ["https://6y2b87b1.mirror.aliyuncs.com"]
}