在linux中docker的安装以及出现的问题

可参考官网进行安装
官网网址：官网参考手册

cat /etc/redhat-release    #如果不是CentOS 7有一些命令是不一样的

yum -y install gcc gcc-c++

yum remove docker 
                  docker-client 
                  docker-client-latest 
                  docker-common 
                  docker-latest 
                  docker-latest-logrotate 
                  docker-logrotate 
                  docker-engine

 yum install -y yum-utils

failure: repodata/repomd.xml from mirrors: [Errno 256] No more mirrors to try.
http://mirrors/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors; Unknown error"

最终参考了博客，得以解决：
https://blog.csdn.net/weixin_42728126/article/details/114378035

#官网上的是国外的，这里使用国内的阿里云比较快
yum-config-manager --add-repo http://mirrors aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum makecache fast

yum -y install docker-ce docker-ce-cli containerd.io

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
No package docker-ce available.
No package docker-ce-cli available.
No package containerd.io available.
Error: Nothing to do

最终参考了博客，得以解决：
https://blog.csdn.net/qq_25760623/article/details/88657491

#测试
docker version
docker run hello-world
docker images

#关闭docker
systemctl stop docker

#查看docker状态
systemctl status docker

#查看当前docker的进程
ps -ef|grep docker