centos中安装docker

1、最小化安装centos

centos版本不能低于centos7

2、在centos中安装docker

（1）最小化安装网卡问题、软件等问题

1）网卡：没有IP地址，要启动网卡。另外还有网卡名称要修改的问题。

2）设置yum源后并清缓存，如阿里源。vim /etc/yum.repos.d/。。。相关文件

base

name=CentOS-7 - Base - mirrors.aliyun.com

baseurl=https://mirrors.aliyun.com/centos-vault/7.9.2009/os/$basearch/

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/centos-vault/7.9.2009/os/$basearch/RPM-GPG-KEY-CentOS-7

updates

name=CentOS-7 - Updates - mirrors.aliyun.com

baseurl=https://mirrors.aliyun.com/centos-vault/7.9.2009/updates/$basearch/

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/centos-vault/7.9.2009/os/$basearch/RPM-GPG-KEY-CentOS-7

extras

name=CentOS-7 - Extras - mirrors.aliyun.com

baseurl=https://mirrors.aliyun.com/centos-vault/7.9.2009/extras/$basearch/

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/centos-vault/7.9.2009/os/$basearch/RPM-GPG-KEY-CentOS-7

yum clean all

yum makecache

3）更新yum源，yum update

4）安装相关软件yum install -y wget,net-tools等。

5）安装yum工具，yum install -y yum-utils

6）配置Docker的yum源

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

7） 安装必须的软件包

yum install -y yum-utils device-mapper-persistent-date lvm2

8）安装docker

yum install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

9）相关操作

systemctl stop firewalld

systemctl disable firewalld

systemctl start docker # 启动docker服务 docker images

systemctl start docker # 启动docker服务

systemctl stop docker # 停止docker服务

systemctl restart docker # 重启docker服务

docker -v