记CentOS8下安装Docker

今天换了台CentOS8机器，按以前装的时候发现有些地方不同，在此记录下

[root@VM-0-16-centos ~]# sudo yum install docker-ce docker-ce-cli containerd.io
Qcloud centos - AppStream                                                     4.0 kB/s | 4.3 kB
Qcloud centos - BaseOS                                                         43 kB/s | 3.9 kB
Qcloud centos - extras                                                        1.4 kB/s | 1.5 kB
EPEL for redhat/centos 8 - x86_64                                             4.3 kB/s | 4.7 kB
No match for argument: docker-ce
No match for argument: docker-ce-cli
No match for argument: containerd.io
Error: Unable to find a match

出现了以上问题，以为是新机器所以换了下源，结果是一样
后来装上依赖就OK了

sudo yum install -y yum-utils  device-mapper-persistent-data  lvm2
 
sudo yum-config-manager  --add-repo   https://download.docker.com/linux/centos/docker-ce.repo
 
sudo yum install docker-ce docker-ce-cli containerd.io

如果报了如下错误，说明版本错误

[root@VM-0-16-centos ~]# sudo yum install docker-ce docker-ce-cli containerd.io
Repository epel is listed more than once in the configuration
Docker CE Stable - x86_64                                         4.2 kB/s |  25 kB     00:05
Error:
 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
  - 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
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best cand                                           idate packages)

需要安装新的

dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

然后再进行接下去的步骤

sudo yum install docker-ce docker-ce-cli
 
sudo systemctl start docker

验证一下，并加入开机启动

OK~