大数据应用开发：centos7 ----- docker安装

在docker安装之前需要检查一下Linux是网络情况

ping www.baidu.com

安装Linux需要的包

yum -y install vim bash-completion wget && bash

移走系统自带的镜像安装包，防止后续安装包安装冲突

cd /etc/yum.repos.d/

ll

mkdir base

mv CentOS-* base

ll base

配置docker私有仓库(yum仓库)

touch aliyun.docker.repo

cat > aliyun.docker.repo << EOF

逐行输入下面内容

>[docker]

> name=docker

>baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/

> gpgcheck=0

> gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

> EOF

查看仓库配置情况

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

检验yum仓库是否安装成功（清空缓存）

yum clean all && yum repolist

安装docker-er

yum -y install docker-ce

查看docker版本

docker -v

配置docker镜像加速器

mkdir -p /etc/docker/

cd /etc/docker/

vim /etc/docker/daemon.json

            {

              "registry-mirrors": ["https://docker.mirrors.ustc.edu.cn"]

            }

systemctl daemon-reload

systemctl restart docker && systemctl enable docker

systemctl status docker

检验docker容器

docker info

 docker pull centos:7