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Elijah: Cloudlet Infrastructure for Mobile Computing

A cloudlet is a new architectural element that arises from the convergence of mobile computing and cloud computing. It represents the middle tier of a 3-tier hierarchy: mobile device - cloudlet - cloud. A cloudlet can be viewed as a "data center in a box" whose goal is to "bring the cloud closer".

Copyright (C) 2011-2012 Carnegie Mellon University This is a developing project and some features might not be stable yet. Please visit our website at Elijah page.


All source code and documentation except GeoIP database listed below are licensed under the Apache License, Version 2.0.

Tested platform

Ubuntu 12.04 LTS 64 bit


This project is composed of two parts: Cloudlet and Cloud. The role of the Cloud part is periodically receiving heartbeats from cloudlets and return IP address of nearby cloudlets using the IP address of the querying client.

  • For Cloudlet

    You will need:

    • libvirt python binding
    • avahi-daemon avahi-python
    • python packages listed at requirements.txt

    To install, you need

      > $ sudo apt-get install python-pip python-libvirt avahi-daemon python-avahi
      > $ sudo pip install -r requirements.txt

    For some distribution, Avahi-daemon doesn't start at boot. You can enable it

      > $ sudo service avahi-daemon start
      > $ sudo update-rc.d avahi-daemon defaults
  • For Cloud

    See ./server/register-rest/