建一个VPS，我该如何操作？

什么是VPS？

VPS,全称是Virtual Private Server，中文叫虚拟专用服务器，就是你用别人的服务器资源，按需分配给你的虚拟机，这样成本比买整台服务器低，但配置又比普通个人服务器高，适合个人站长、小企业主或者开发人员使用。

选择 Hosting Provider

选择 Hosting Provider 是建VPS的第一步。 Hosting Provider 提供各种类型的虚拟机，价格根据配置不同而变化，我推荐几个常见的 Hosting Provider：

1. AWS（亚马逊云服务器）：全球领先的云服务提供商，支持多种虚拟机类型，适合有一定技术背景的用户。
2. DigitalOcean：非常亲民的 Hosting Provider，价格便宜，配置灵活，适合新手。
3. HostGator：可靠且便宜，支持SSD虚拟机，适合预算有限的用户。
4. Cloudflare：虽然主要是为云flare服务提供，但也有VPS服务，配置稳定，适合需要高 uptime 的用户。

VPS的配置

VPS的配置主要看以下几点：

1. CPU核心数：一般VPS的CPU配置在1-2个核心，对于普通网站来说足够了。
2. 内存：至少4GB内存，8GB以上更合适，内存不够会导致网站加载变慢。
3. 存储空间：至少1GB，如果需要上传大量文件或者存储大量数据，建议选择2GB或以上。
4. 带宽：VPS的带宽一般在50-100Mbit/s，如果网站流量大，建议选择100Mbit/s以上的配置。

安装系统

安装系统是建VPS的关键步骤,VPS的系统是Linux，因为Linux兼容性强，运行稳定，下面以Ubuntu为例，简单说明安装过程：

1. 下载VPS的镜像文件。
2. 将镜像文件上传到服务器。
3. 进入服务器的root目录,安装系统：

   sudo apt-get update
   sudo apt-get install -y distro
   sudo apt-get install -y build-essential
   sudo apt-get install -y g++-5
   sudo apt-get install -y python3.8
   sudo apt-get install -y python3.8-setuptools
   sudo apt-get install -y pip3
   sudo apt-get install -y rm -rf /var/lib/apt/lists/*

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