NodeOS

Lightweight operating system using Node.js as userspace.

NodeOS is an operating system built entirely in Javascript and managed by npm. Any package in npm is a NodeOS package, that means a selection of more than 400.000 packages. The goal of NodeOS is to provide just enough to let npm provide the rest. Since anyone can contribute to it, anyone can create NodeOS packages.

This project won the Spanish 9th National Free Software Championship on the Systems category and was Honorable Mention of its 10th edition. It was also presented as the degree thesis of Jesús Leganes Combarro with a qualification of 10/10 with distinction.

Useful links

Introduction

NodeOS is a Node.js based operating system, built-off of the Linux kernel. The NodeOS Project is aiming to, and can already run on some of the following platforms:

real hardware like desktops, laptops, or SoC's (Raspberry Pi)
cloud providers like Joyent, Amazon or Rackspace
virtual machines like QEmu, VirtualBox, VMWare and KVM
PaaS providers like Heroku or Joyent's Manta
container providers like Docker & Vagga

Core development is being done in layers. There could be some differences to adjust better to each target platform, but the general structure is:

barebones custom Linux kernel with an initramfs that boots to a Node.js REPL
initramfs Initram environment to mount the users partition & boot the system
usersfs multi-user environment with the same behaviour of traditional OSes

Booting process

All the layers are bootable, leading barebones to a raw naked Node.js REPL prompt as PID 1, while initramfs exec actual NodeOS code to isolate user code from the core system and, if available, mount a partition with the users' home directories and root filesystems.

If a usersfs partition is being set at boot time, it will be mounted and the system will consider each one of its folders as the home folder for a valid user on the system, and will execute a init file in the root of each of them. If found, the root user will be the first to be considered and will have access to all of the home directories, but by design it will not be possible to elevate permissions once the system has finished booting.

Hacking

If you are hacking on NodeOS for a somewhat production environment, you are likely interested on building a custom usersfs image or modify it once booted, since each user is isolated from the others and everyone can be able to define its own root filesystem, but you can customize all other layers if you want. For example, you can modify initramfs to login users and mount their home folders from a cloud service or craft a system without global services (no root user), or also dedicate a full NodeOS instance to a single Node.js application.

Pre-built Images

Ready to use pre-build images are automatically generated after each commit in master branch that sucessfully pass the tests. To exec them, you'll need to have QEmu installed on your system.

The iso can be written to a CD-R or flashed to a USB pendrive, but will only provide the read-only rootfs and the changes will be done in memory, losing them after reboot, so you'll manually need to set a read-write usersfs partition if you want to persist them. On the other hand, if you want to flash it to a USB pendrive, We recommended doing it by using bin/installUSB command so it will automatically create a read-write usersfs partition to fill the remaining space and use it as persistent storage.

Build NodeOS in five steps

Download the project source code:

git clone git@github.com:NodeOS/NodeOS.git
cd NodeOS

Install the required build tools. On a Ubuntu based system you can do it by executing:
```
sudo bin/install-dependencies
```
Install NodeOS build dependencies:
```
npm install
```
Build NodeOS:
```
npm run build
```
By default it will generate some files that can be used with QEmu, compiled for your current machine architecture. You can configure the build process by passing some environment variables. For example, to force to build for 32 bits, use BITS=32 npm install instead.
Exec your freshly compiled NodeOS image:
```
npm start
```
It will automatically detect what CPU architecture will need to be used on QEmu and exec the correct emulation.

...profit! :-D

If you encounter an error when building NodeOS, take a look at the wiki or open an issue.

Single Process OS

NodeOS can be used as a Single Process OS, where only run a single executable. To do so, set the SINGLE_USER environment variable to the name of a npm module when executing npm run build. This will run fully from initram, persistence can be achieved by setting this environment variable to an empty string and later using a custom usersfs partition, but this is still experimental.

NodeOS on LXC containers (Docker and vagga)

NodeOS fully officially supports Docker, published images are available at the DockerHub NodeOS organization. If you are interested in helping or testing, you can build them from source code.

Vagga support is fairly experimental, and help here will be greatly appreciated.

Quick Start

Install Docker
One Liner
```
sudo docker run -t -i nodeos/nodeos
```

Build from Source

git clone https://github.com/NodeOS/NodeOS.git
cd NodeOS
PLATFORM=docker npm install

License

MIT

This software consists of voluntary contributions made by many individuals. For exact contribution history, see the revision history available at https://github.com/NodeOS/NodeOS

rbecheras/NodeOS