问题: 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)

检查发现containerd.io此软件包已经安装,但版本是1.2.0;所以造成这种安装失败的原因是containerd.io软件包版本过低

解决方法:

 1.检查Docker版本,安装低版本,不进行安装新版本Docker(在此就不繁琐介绍低版本的安装过程了)

 检查相应的软件包版本

yum list docker-ce --showduplicates | sort -r

安装低版本的软件包

yum -y install  docker-ce-18.06.0.ce-3.el7

2.安装新版的containerd.io软件包

  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

下载相关软件包

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软件包

yum -y install containerd.io-1.2.6-3.3.el7.x86_64.rpm

安装完成后重新安装Docker

安装Docker软件包

yum -y install docker-ce

 安装完成后启动Docker

 systemctl  start docker      //CentOS7启动方法

 server  docker start        //CentOS6启动方法 

systemctl  start docker

 

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