# MAAS

[MAAS](https://maas.io)即Metal as a Service，是Ubuntu开发的完全自动化物理服务器管理系统。在这个基础上可以实现云计算部署。

我的目标是对比各种BareMetal平台，实现海量服务器的自动管理。

## 对比

开源体系中有相似功能的平台可以对比研究：

* FAI (Fully Automatic Installation)
* Cobbler - Red Hat体系的服务器自动安装系统，基于KickStart
* Spackwalk - Red Hat商用软件Satellite的上游开源软件
* Foreman - 集成了Puppet的开源DevOps平台，也有部分功能
* Crowbar - 可以将bare-metal自动转换成OpenStack云计算平台，并且支持Ceph，高可用，以及自动安装

> [T420s/ X220 UEFI PXE boot](https://forums.lenovo.com/t5/Enterprise-Client-Management/T420s-X220-UEFI-PXE-boot/td-p/1301705)介绍了联想笔记本X220通过PXE启动的方法，准备用来实践一个自动部署系统。
>
> [Enabling PXE Boot for Lenovo ThinkPad](https://www.itecs.ncsu.edu/helpdesk/kb/enabling-pxe-boot-for-lenovo-thinkpad/)介绍了PXE启动方法：

* Boot up the computer.
* Press F2 -> press Enter -> press F1.
* This should take you to the BIOS screen. Select Security -> select Secure Boot -> set to Disable -> select Start Up -> select UEFI/Legacy Boot -> set to Legacy Only -> press F10.
* Once you press F10, reboot then press F12.
* You should now be at the boot menu. Select PCI LAN.
* Press Enter.
* This should bring up a screen with the Intel Network Boot Agent. Simultaneously press Function and P (on some Lenovo ThinkPad models, this will be the same as pressing Pause|Break).
* Press Enter.
* This should go to failure, then go to the boot menu.

## 参考

* [Top 6 Open Source Linux Server Provisioning Software](https://www.cyberciti.biz/tips/server-provisioning-software.html)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://huataihuang.gitbook.io/cloud-atlas-draft/iaas/maas.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.