centos8.2安装docker

[Pasoul]

系统 Centos8.2

[lukou@deploy ~]$ lsb_release -a
LSB Version:  :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description:  CentOS Linux release 8.2.2004 (Core)
Release:  8.2.2004
Codename: Core

Docker安装

• step 1:安装一些必要的工具 sudo yum install -y yum-utils device-mapper-persistent-data lvm2 • step 2:添加软件源信息 sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo • Step 3: 更新 Docker-CE

sudo yum makecache fast
• 错误: yum makecache: error: argument timer: invalid choice: ‘fast’ (choose from ‘timer’)
• 问题: ‘索引的时候出错，即centos8没有该参数，解决办法为：去掉fast参数’
• 命令改成: sudo yum makecache
• 再次执行: sudo yum makecache

• Step 5: 开启Docker服务

• 启动1: sudo service docker start
• 启动2: sudo systemctl start docker

• Step 4: 安装 Docker-CE

sudo yum -y install docker-ce
• 报错: Problem: package docker-ce-3:19.03.12-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed;
• 根据提示，需要containerd.io的版本 >= 1.2.2-3，操作如下：
• 安装wget指令 yum install wget;
• 获取rpm包 wget https://download.docker.com/linux/centos/7/x86_64/edge/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm;
• 升级containerd.io（安装rpm包） yum -y install containerd.io-1.2.6-3.3.el7.x86_64.rpm;
• 再次执行 sudo yum -y install docker-ce;

• Step 6: 安装效验

• docker version
• sudo docker ps

• 设置开机自启动 sudo systemctl enable docker • 重启生效 systemctl restart docker.service