docker install

一、安装

#!/bin/bash
#卸载旧版本
yum remove docker docker-common docker-selinux docker-engine

#安装依赖
yum install -y yum-utils device-mapper-persistent-data lvm2

#配置稳定仓库
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

#更新yum缓存
yum makecache fast

#安装docker-ce-selinux
yum -y install docker-ce

#启动服务
systemctl enable docker
systemctl start docker

二、修改默认存储位置

#停掉Docker
systemctl stop docker 

#迁移Docker数据
cp -r /var/lib/docker/* /data/docker/

#修改Docker Root Dir
vi /usr/lib/systemd/system/docker.service // ExecStart=/usr/bin/dockerd --graph=/data/docker

#启动docker
systemctl daemon-reload && systemctl start docker

#查看修改后的信息
docker info

#卸载挂载点
umount /var/lib/docker/*

#删除原始数据
rm -rf /var/lib/docker/*

三、参阅

https://www.runoob.com/docker/centos-docker-install.html