事情经过
在Centos8.0下用yum安装Docker，执行命令后报错，内容大概是需要containerd.io的版本 >= 1.2.2-3
执行的命令如下:
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sudo yum install docker-ce docker-ce-cli containerd.io
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详细报错信息
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Last metadata expiration check: 0:01:32 ago on Sat 26 Sep 2020 12:10:38 AM CST.
Error:
Problem: package docker-ce-3:19.03.13-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed
- cannot install the best candidate for the job
- package containerd.io-1.2.10-3.2.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.13-3.1.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.13-3.2.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.2-3.3.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.2-3.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.4-3.1.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.5-3.1.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.2.6-3.3.el7.x86_64 is filtered out by modular filtering
- package containerd.io-1.3.7-3.1.el7.x86_64 is filtered out by modular filtering
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
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解决办法
- 降低安装的docker版本
- 手动安装更高版本的
containerd.io
对于第1种方法，这里有比较详细的介绍，我们主要介绍第2种办法
下载containerd.io的rpm包，安装新版containerd.io
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## 如果你的系统没有安装wget，先安装
$sudo yum install -y wget
## Centos7执行下面的命令
$wget https://download.docker.com/linux/centos/7/x86_64/edge/Packages/containerd.io-1.3.7-3.1.el7.x86_64.rpm
## Centos8执行下面的命令
$wget https://download.docker.com/linux/centos/8/x86_64/edge/Packages/containerd.io-1.3.7-3.1.el8.x86_64.rpm
## 执行完后，当前目录下会有一个containerd.io-1.3.7-XXX.rpm文件
## 使用这个rpm安装
$sudo yum install -y containerd.io-1.3.7-3.1.el8.x86_64.rpm
## 安装完后再安装docker
$sudo yum install docker-ce docker-ce-cli containerd.io
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检查docker是否安装成功
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#启动docker
$systemctl start docker
#检查docker版本
$docker -v
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