Set yum download source in centos7 -> download docker in centos7 -> install mysql5.7 mirror in docker

Set yum download source in centos7

1. 进入下载源配置文件夹下

	cd  /etc/yum.repos.d/

2. 下载国内下载源配置文件

	wget http://mirrors.aliyun.com/repo/Centos-7.repo //阿里家的

3. 如果没有wget命令,执行

	yum install-y wget //进行下载

4.将原先的下载源配置文件进行备份

	mv  CentOs-Base.repo CentOs-Base.repo.bak

5.将下载的国内下载源配置文件进行重命名

	mv Centos-7.repo CentOs-Base.repo

6.执行yum更新命令

	yum clean all
	yum makecache
	yum update

Download docker in centos7

Docker currently supports CentOS 7 and later versions, and the kernel requirement is at least 3.10.

1.检查centos7的内核版本:

	sudo uname -r

2.删除系统中可能已经安装的docker

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

3.下载yum的一些工具

	sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

4.添加docker的镜像源

	sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

5.下载docker

	$ sudo yum update
	$ sudo yum install docker-ce

6. 启动dokcer

	sudo systemctl enable docker
	sudo systemctl start docker

dokcer starts mysql5.7 mirror

1.下载mysql镜像

	docker pull mysql:5.7

2.查看下载好的镜像

	docker images

3.运行mysql镜像

	docker run --name mysql5.7 -p 3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7

4.查询运行的所有容器

	docker ps