## 关闭 SELinux

```
sudo setenforce 0

sudo cp /etc/sysconfig/selinux /etc/sysconfig/selinux.bak`date +%F` && sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux
```

## 替换镜像源

```
sudo mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
sudo curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sudo yum makecache
```

## 下载常用工具

```
sudo yum install -y git vim gcc glibc-static telnet bridge-utils wget net-tools tree
```

## 安装 docker

```
curl -fsSL get.docker.com -o get-docker.sh
sh get-docker.sh --mirror Aliyun
```

## 更改 docker 源

```
sudo mkdir -p /etc/docker/

sudo cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": [
    "https://dockerhub.azk8s.cn",
    "https://reg-mirror.qiniu.com"
  ]
}
EOF
```
> 如果提示没有权限，需要先切换到 root 身份，并通过 `cat /etc/docker/daemon.json` 查看配置是否写入文件。

## 配置并启动 docker

```
sudo groupadd docker
sudo usermod -aG docker $USER
sudo systemctl enable docker
sudo systemctl start docker
```

> 将上面的 `<user>` 替换成操作的用户。

## docker-compose 安装和配置

```
curl -L https://get.daocloud.io/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
```