How to solve the problem of installing docker in centos

How to solve the problem of failed installation of docker in centos?

CentOS installation Docker error message:

##Problem: package docker-ce-3:19.03.2-3.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-1.2.2-3.3.el7 .x86_64 is excluded
- package containerd.io-1.2.2-3.el7.x86_64 is excluded
- package containerd.io-1.2.4-3.1.el7.x86_64 is excluded
- package containerd .io-1.2.5-3.1.el7.x86_64 is excluded
- package containerd.io-1.2.6-3.3.el7.x86_64 is excluded
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Checked and found that the containerd.io package has been installed, but the version is 1.2.0; so this installation failed The reason is that the containerd.io software package version is too low

Solution:

　

1. Check the Docker version, install the lower version, do not install the new version of Docker (it is not complicated here) Introducing the installation process of lower versions)

　[root@localhost ~]# yum list docker-ce --showduplicates | sort -r　　　　//检查相应的软件包版本

 　　　　[root@localhost ~]# yum -y install  docker-ce-18.06.0.ce-3.el7 　　　　//安装低版本的软件包 [object Object]

　

2. Install the new version of containerd.io software package

containerd.io软件包下载地址：https://download.docker.com/linux/centos/7/x86_64/edge/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm
　　 [root@localhost ~]#wget https://download.docker.com/linux/centos/7/x86_64/edge/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm　　　　//下载相关软件包

 [root@localhost ~]# yum -y install containerd.io-1.2.6-3.3.el7.x86_64.rpm　　　　//升级containerd.io软件包

Reinstall Docker after the installation is complete

[root@localhost ~]# yum -y install docker-ce //Install Docker Software package

After the installation is complete, start Docker

[root@localhost ~]# systemctl  start docker　　　　　　//CentOS7启动方法
[root@localhost ~]#server  docker start　　　　　　　　//CentOS6启动方法

## After checking the status, it is found that it has been started successfully

Related recommendations: docker tutorial

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