docker搭建

#docker搭建
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
yum makecache   #生产缓存
yum update   #更新系统
yum install docker   #开始安装docker
systemctl start docker  #启动docker
docker images   #查看本地docker镜像列表
systemctl enable docker    #开机启动docker
#更换默认路径   docker镜像的默认存储路径是/var/lib/docker
systemctl stop docker
vi /usr/lib/systemd/system/docker.service
ExecStart=/usr/bin/dockerd-current \
          --graph /opt/software/docker \
#然后重新加载配置文件
systemctl daemon-reload
#最后重启即可
systemctl restart docker
卸载
#查询安装过的包
yum list installed | grep docker
docker-engine.x86_64                 17.03.0.ce-1.el7.centos         @dockerrepo
#删除安装的软件包
yum -y remove docker-engine.x86_64