OpenNebula 4.12 Beta released!

The OpenNebula project is proud to announce the availability of OpenNebula 4.12 Beta (Cotton Candy). This release ships with several improvements in different subsystems and components. For the first time, OpenNebula will be able to generate cost reports that can be integrated with chargeback and billing platforms, and also presented to both the administrators and the end users. Each VM Template defined by the Cloud administrator can define a cost per cpu and per memory per hour.


Starting with Cotton Candy, Virtual Datacenters are a new kind of OpenNebula resource with its own ID, name, etc. and the term Resource Provider disappears. Making VDCs a separate resource has several advantages over the previous Group/VDC concept, since they can have one or more Groups added to them. This gives the Cloud Admin greater resource assignment flexibility.

In addition to the well known VNC support in Sunstone, OpenNebula 4.12 will include support to interact with Virtual Machines using the SPICE protocol. This feature can be enabled for any Virtual Machine just checking the option in the input/output section of the Template creation form.

Networking has been vastly improved in 4.12, with the addition of Security Groups, allowing administrators to define the firewall rules and apply them to the Virtual Machines. Also, Virtual Extensible LAN (VXLAN) is a network virtualization technology aimed to solve large cloud deployments problems, encapsulating Ethernet frames within UDP packets, and thus solving the 4096 VLAN limit problem. Cotton Candy is fully capable of managing VXLANs using the linux kernel integration.

Important new features related to the newly introduced vCenter support are available in OpenNebula 4.12: the ability to import running VMs and networks, including the attach/detach NIC functionality, a new cloud view tailored for vCenter, VM contextualization support and reacquire VM Templates with their logo and description.

Finally, several improvements are scattered across every other OpenNebula component: the possibility to flush and disable a system datastore, improvements in Sunstone for better user workflow, and many other bugfixes that stabilized features introduced in Fox Fur.

As usual OpenNebula releases are named after a Nebula. The Cotton Candy Nebula (IRAS 17150-3224) is located in the constellation of Ara.

The OpenNebula team is now set to bug-fixing mode. Note that this is a beta release aimed at testers and developers to try the new features, and send a more than welcomed feedback for the final release.

Relevant Links

OpenNebula Systems Announces Support Plans in EST Business Hours

OpenNebula Systems has just announced the availability of Standard 9×5 Support Subscriptions in EST Business hours. Previously, the 9×5 support subscription was only available in CET business hours.

OpenNebula Systems support plans provide corporations, research centers and governments with the expert support and assistance needed to operate a cloud environment for production applications. Commercial Production Support is currently provided at three levels:

  • Basic Level: Expert support with basic SLAs within regular business hours. Basic support is available for smaller non-production installations.
  • Standard Production Level: Expert support with production SLAs within regular business hours in CET and EST zones. Standard Support Subscriptions include everything from Basic Support, as well as bug fix requests, unlimited issues, long-term multi-year support, indemnification and license flexibility.
  • Premium Production Level: Expert support with production SLAs 24×7 and immediate access to engineers. Premium Support Subscriptions include everything from Standard Support along with quicker maximum response times and higher number of accounts in support portal. The following table summarizes response time and features in the levels of support.

More details at the

OpenNebula Systems is expanding its U.S. operations to help support increasing global demand for OpenNebula solutions. Stay tuned for more news.

4.12 Features: Show Me The Money!

In 4.12 we have introduced showback features. This toolset generates cost reports that can be integrated with chargeback and billing platforms.

Now each VM Template can optionally define a cost, in undefined units. The cost is defined as cost per cpu per hour, and cost per memory MB per hour. There is also a default cost that can be applied to all VM Templates.


OpenNebula will then calculate monthly reports that are nicely presented to both the administrators and the end users.


And, of course, the raw data can also be retrieved in xml, json or csv from the command line. For more information, go to the 4.12 development documentation.

Programme Open Cloud & Developer Park – Cloud Expo Europe 2015

We want to remind our community that OpenNebula will have strong presence in the upcoming Cloud Expo Europe 2015, which is only two weeks away on the 11th and 12th of March 2015 in ExCeL London. This is the biggest and best attended cloud event in the world , with over 300 top experts – including number 1 rated CIOs, Acclaimed Global Cloud Leaders, Cloud Gurus with HUGE twitter followings – all speaking in a compelling conference and seminar programme, which covers all the major technology and business issues.

The online programme for the Open Cloud & Developer Park, sponsored by the two leading open source Cloud Management Platforms, OpenNebula and OpenStack, is now available. The Park covers key open source cloud platforms, aiming to transmit technical knowledge and hands-on tutorials on today’s main open source IaaS platforms.

Moreover, the project will introduce a success story with Armin Deliomini, from Runtastic, at the CMSA theatre on Thursday 12th March at 12.15 – 12.40, to explain how OpenNebula saved them endless hours of tinkering!


Happen to be around London in the second week of March? Register for free and come to see some juicy talks around Cloud Management Platforms and in particular over interesting OpenNebula project details and user experiences.

OpenNebula Tech Day, Prague, Czech Republic, 25 March

The first OpenNebula Tech Day of 2015 will be held in Prague, Czech Republic and it will be hosted by CESNETcesnet-logo-800, the operator of Czech National Research Network, and the Czech National Grid Initiative. It its a long-term participant in European infrastructure projects, currently, among others, also operating an OpenNebula-based site within the European Grid Infrastructure’s Federated Cloud Platform.

The event will start on the 25th at 9:00 with a hands-on cloud installation and operation workshop, and will continue with presentations from OpenNebula community members and users. If you want to participate in this event and share your experience with OpenNebula, send us your talk proposal at

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.

We hope to see you there! and a big thanks to CESNET for making OpenNebula Tech Day possible.


vOneCloud 1.2 is Out! Turn your VMware vSphere Infrastructure into a Private Cloud

We want you to know that OpenNebula Systems have just announced  the availability of the (to date) most demanded vOneCloud version, 1.2.

vOneCloud 1.2 introduces a number of outstanding features to ease the renewal of vCenter based virtual infrastructures into fully featured private clouds. Among these features, it is worth highlighting the automatic import of virtual machines running in a vCenter instance into vOneCloud, with zero downtime. After a virtual machine is imported, all the life cycle operations can be managed through Sunstone, the vOnecloud Web UI. Moreover, support for networks and distributed vswitches, including the ability to dynamically add and remove network interfaces from running machines is also present in the latest release of the appliance.

The new release also brings new components like the Control Panel, a web interface that eases the configuration of vOneCloud services and enables one click smooth upgrades to newer versions, and the Control Console, a text based wizard to configure the bootstrapping and basic aspects of the appliance.

The above features and components add to the already present ability to expose a multi-tenant cloud-like provisioning layer through the use of virtual datacenters, self-service portal, or hybrid cloud computing to connect in-house vCenter infrastructures with public clouds. vOneCloud seamlessly integrates with running vCenter virtualized infrastructures, leveraging advanced features such as vMotion, HA or DRS scheduling provided by the VMware vSphere product family.

vOneCloud is free to download and use, and is very simple to install, with minimal configuration required, as well as non-intrusive, requiring no changes to the existing infrastructure management tools in the datacenter. This means that you can try it out with without the need to commit to it (if you happen to don’t like it -although that won’t be the case!- just remove the appliance).

Give it a spin!

Relevant Links


OpenNebula Conf 2015: Call for Papers Started

Finally the third ever OpenNebula Conf opens its Call for Papers again. As you may already know, this year OpenNebula Conf is taking place in Barcelona, Spain, on October 20-22. Everybody who wants to join as a speaker can now propose a talk via the online form at:

We are looking for content that is appropriate for people who are brand new to OpenNebula, experts, and everything in between. If you are a OpenNebula practitioner, user, architect, devop, admin or developer and have something to share, we welcome your submission. Suggested topics will include:

  • Latest developments in OpenNebula
  • Research using OpenNebula
  • User experiences and case studies using OpenNebula
  • Best practices and tools
  • Integration with other cloud, virtualization and data center components
  • Any other topics that you feel are relevant to developers, users, researchers and other members of the community

If you want to get an idea of the past OpenNebulaConf sessions, including talks from companies such as CentOS, Runtastic, Puppet Labs, Cloudweavers, RedHat, Deutsche Post, please check our Youtube channel or download the presentations from our SlideShare account

We are looking forward to your talks and will come back to you by the end of CfP on March 31

New OpenNebula Community Forum

Good news everyone! Starting today, the brand new community forum is open!

After an ongoing problem with the current mailing lists hosting, we decided to replace them with a Discourse forum. The new forum will help us to have more dynamic conversations, and provide a much better place for newcomers to find answers in previous threads.


This forum is for anything OpenNebula related -community support, events, announcements, development-. Go ahead and sign up now! It will only take a few seconds, and it’s going to be worth it.

The current mailing lists will be taken down in 2 weeks, but the archives will be still accessible. But there’s no need to feel nostalgic about the emails, the new platform can be also used replying from your inbox.

Upcoming TechDays in 2015

Besides our annual OpenNebula Conference, we are planning to organize Technology Day events in multiple cities globally during 2015.

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 that will focus on:

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

In the shorter term we are planning to organize TechDays in:

  • Prague, Czech Republic
  • Dublin, Ireland
  • Dallas, USA
  • Chicago, USA

For more information on past events, please visit the Cloud Technology Days page

Please send us an email at if you are interested in hosting a TechDays event.

We look forward to your answers

Get the Best Price on OpenNebulaConf 2015

Now that we’re solidly in 2015, it’s a great time to start thinking about the technical events you want to attend this year. OpenNebulaConf 2015 is a great opportunity to share experiences and meet people with expertise and interest in OpenNebula.

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OpenNebula Conferences serve as a meeting point of cloud users, developers, administrators, integrators and researchers, featuring talks with experiences and use cases. They also include tutorials, lightning talks, and hacking sessions that provide an opportunity to discuss burning ideas, and meet face to face to discuss development. If you’re looking for an idea of past events, feel free to watch the talks from last year’s OpenNebulaConf.

This year, the OpenNebula Conf will take place at the cosmopolitan city of Barcelona from October 20th to 22nd and if you buy your ticket before June 15th, you get the best discount of the year.

All Ticket includes:

  • Attendance at all conference presentations (October 21st and 22nd)
  • Attendance at pre-conference tutorials and hacking sessions (October 20th)
  • Coffee break during the morning and afternoon breaks
  • Lunch on both conference days
  • Dinner event on the first conference day
  • Tapas dinner on the pre-conference day
  • WiFi access

OpenNebulaConf Ticket (Very Early Bird – 40% discount) 360€