centos安装docker

切换为root用户

卸载旧版本（如果安装过旧版本的话）

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

安装docker

安装需要的软件包

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

设置yum源
由于官网的源太慢了，这里可以使用阿里云Docker Yum源替代：

sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum makecache fast

安装最新版本docker

yum install -y docker-ce

启动docker

systemctl start docker.service

设置开机自启动

systemctl enable docker.service

验证安装是否成功（有client和service两部分表示docker安装启动都成功了）

docker version
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

安装docker composer

github编译安装

• 下载最新版的docker-compose文件 

sudo curl -L https://github.com/docker/compose/releases/download/1.16.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

• 添加可执行权限

sudo chmod +x /usr/local/bin/docker-compose

• 测试安装结果

$ docker-compose --version
 
docker-compose version 1.16.1, build 1719ceb

pip安装

sudo pip install docker-compose