TechDay Cambridge, MA, USA, 22 April 2016

The OpenNebula TechDays are full day events to learn about OpenNebula with a hands-on cloud installation and operation workshop, and presentations from community members and users. These events are targeted at cloud architects, data center admins, systems admins, systems integrators, DevOps architects, and solutions architect. The emphasis is to find local speakers and users to come together and talk about things that they care about most, and to share stories from their experiences using OpenNebula.


Research Computing was established in 2007 as part of the Faculty of Arts & Sciences (FAS) Division of Science in Harvard University, with the founding principle of facilitating the advancement of complex research by providing leading edge computing services. Research Computing staff maintain expertise in constantly changing computing technologies, while “speaking the language” of FAS researchers, to help them use computing more effectively.


The TechDay will be held at

Harvard University
Research Computing
Building Room 425
52 Oxford St, Northwest
Cambridge, MA 02138


Call for Speakers

Send us an email at if you are interested in speaking at this TechDay and:

  • Sharing cloud use cases and deployment experiences
  • Introducing new integrations and ecosystem developments
  • Describing other related cloud open-source projects and tools


The number of seats is limited  to ensure there is plenty of opportunity for everyone to interact. We encourage everyone to register as early as possible.

Agenda and Speakers

Agenda includes a hands-on cloud installation and operation workshop, and presentations from OpenNebula community members and users.

9:00-9:30: An Introduction to OpenNebula

Constantino Vazquez Blanco, VP of Engineering at OpenNebula Systems
We’re moving into a world of open cloud — where each organization can find the right cloud for its unique needs. A single cloud management platform can not be all things to all people, there will be a cloud space with several offerings focused on different environments and/or industries. The OpenNebula commitment to the open cloud flows directly out of its mission — to become the simplest cloud enabling platform — and its purpose — to bring simplicity to the private and hybrid enterprise cloud. OpenNebula exists to help companies build simple, cost‐effective, reliable, open enterprise clouds on existing IT infrastructure. The OpenNebula project is really vendor‐agnostic and completely driven by users needs with features that meet real demands. The session will introduce the OpenNebula project from different perspectives, ranging from its historical milestones and main contributors to its most relevant users and the size of their cloud deployments.

9:30-13:00: Hands-on Workshop

jaime_melis Jaime Melis, Senior Infrastructure Architect at OpenNebula Systems

This hands-on tutorial will give an overview of how OpenNebula is used to build and operate private clouds. The attendees will build, configure and operate their own OpenNebula cloud.


  • An introduction to cloud computing with OpenNebula
  • The architecture of the cloud
  • Planning and installing OpenNebula
  • Configuration and basic usage


The target audience is devops and system administrators interested in deploying a private cloud solution, or in the integration of OpenNebula with other platform.

Skills Gained

  • Describe the features and benefits of using virtualization and clouds
  • Describe different architectures for a cloud that can be deployed with OpenNebula
  • Deployment and basic configuration OpenNebula
  • Basic operation of an OpenNebula cloud instance


No prior OpenNebula skills are required, but participants should have working knowledge of virtualization, networking and Unix/Linux systems.


The workshop includes hands-on exercises to be performed using attendee’s wifi-enabled laptops with VirtualBox installed. The attendees will build, configure and operate their own OpenNebula cloud.

13:00-14:00: Lunch

14:00 – 17:00: Presentations

14:00 – 14:30: OpenNebula in Research Computing

John Noss, Research Computing Associate at Harvard

14:30 – 15:00: Corona Project

Dan Kelleher, Scientific Systems Administrator at Harvard

15:00 – 15:30: OpenNebula: The Integrator’s Story

Roy Keene

OpenNebula’s simple design allows for it to be easily integrated into larger systems. It is likely that most people think of OpenNebula as a finished product that sits on top of a stack of other software and hardware to provide a management layer, API, scheduling and other fundamental cloud pieces. However, treating it as an upstream component allows for integration into a complete system which provides a unified experience for the entire system. The flexibility of OpenNebula’s design plays a large part in making that integration successful not only with a specific version but also as the parts change over time. We have developed a self-managing and self-assembling system that uses OpenNebula heavily, modifying it appropriately along the way to integrate into the whole product. We were able to do this due to the extensible and simple design of OpenNebula where our initial efforts with other products (such as OpenStack) were less successful and more burdensome.

15:30 – 16:00: Coffee Break

16:00 – 16:20: Docker Machine and Swarm on OpenNebula

Jaime Melis, Senior Infrastructure Architect at OpenNebula Systems

Introduction to OpenNebula’s integration with Docker Machine, or how to run dockers and swarms in your Cloud without breaking a sweat. Open discussion about what the future awaits for Docker in OpenNebula.

16:20 – 16:40: Customizing Virtual Machine Images

Javier Fontán, Advanced Solutions Engineer at OpenNebula Systems

During this session Javier will give us some tips on how to automate the customization of VM images for your needs. Also some methods on how to optimize your images will be discussed. The tools used will be qemu-img and libguestfs.

16:40 – 17:00: Open Space

This is a session for attendees to gather and discuss passionate questions, burning ideas, features, integrations or any topic of their choice, in an informal and tech-friendly environment, with other passionate and interested people.

There is no preplanned list of topics, only time slots and a space in one of the meeting rooms where interested participants propose topics and pick time slots.