Blog Article:


Daniel Molina

May 21, 2019

OpenNebula Techday Madrid 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.



The TechDay will be held at

Edificio GES – plaza de las Cortes 2, 5ª planta
Madrid, Spain

Contact: rodrigo@rentalia.comMaps were disabled by the visitor on this site. is dedicated to the promotion of holiday rentals. Our policy is based on putting users and owners in contact with each other as easily as possible. All ours efforts are to make you feel “Better than at home”. For this objective, we build our own infrastructure and services based on Open Source Software, using Open Nebula in production servers and development environments.

Agenda and Speakers

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

9:15-9:30: An Introduction to OpenNebula

Ignacio M. Llorente, Project Director at OpenNebula
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.
Introduction to OpenNebula – Ignacio M. Llorente from OpenNebula Project

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

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.

13:00-14:15: Lunch

14:15 – 17:00: Presentations

14:15 – 14:30: Clash of titans in SDN: OpenDaylight vs ONOS

Elisa Rojas,, Research Director at Telcaria
After the definition of the OpenFlow protocol and the birth of the SDN paradigm, different communities are fighting to develop the ONE reference SDN controller. During the last years, two specific projects: OpenDaylight and ONOS, supported by both the scientific community and industrial partners, compete to achieve that status. In this talk, we will present the features provided by each project and how they differ, as well as a perspective of their applications in the future.
Clash of Titans in SDN: OpenDaylight vs ONOS – Elisa Rojas from OpenNebula Project

14:30-14:45: OpenNebula Networking: SDNs & NFVs

Ruben S. Montero, Chief Architect at OpenNebula
In this session we will be walk through the Networking architecture of OpenNebula, supported drivers and its integration with other networking technologies like SDNs. This is a hands-on session, where we’ll discuss some of the backstage networking magic. Bonus: new Virtual Router feature!
OpenNebula Networking – Rubén S. Montero from OpenNebula Project

14:45-15:00: 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.
Docker Machine and Swarm on OpenNebula – Jaime Melis from OpenNebula Project

15:00-15:15: Customizing Sunstone Provisioning and Admin Portal

Daniel Molina, Core Developer at OpenNebula
In this session we will show the views that are available in the OpenNebula GUI and how they can be customized to be adapted to different models.
Customizing Sunstone Provisioning and Admin Portal – Daniel Molina from OpenNebula Project

15:15 – 15:45: Coffee Break

15:45 – 16:00: 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.
Customizing Virtual Machine Images – Javier Fontán from OpenNebula Project

16:00 – 16:15: User Experience: Software Defined Data Center with OpenNebula

Manuel Argiz, CIO Todo en Cloud SL
The next step for Infrastructure as a Service is Software Defined Data Center. During this presentation, we will look into the improvements accrued by this ne definitions, and how they add value to resource provisioning.
Todo En Cloud & OpenNebula from OpenNebula Project

16:15 – 16:30: User Experience: Jenkins & OpenNebula, a CD history

Alberto García, at Idealista
Alberto Garcia is a seasoned DevOps/Systems administrator at Idealista dealing with day to day infrastructure duties of the trade. He will explain how to integrate Jenkins Continuous Integration server with OpenNebula to spawn the VMs that will execute the tests. You’ll learn integration tips, about continuous delivery and pitfalls you’ll find in your way.
Jenkins & OpenNebula a CD History – Alberto García from OpenNebula Project

16:30 – 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.


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