OpenNebula Newsletter – January / February 2015

We want to let you know about what we are up to with the main news from the last two months regarding the OpenNebula project, including what you can expect in the following months.


The OpenNebula team released OpenNebula 4.10.2 last month. There were several affected components, ranging from drivers to the OpenNebula core as well as different Sunstone views. On the security side, a vulnerability in the xmlrpc server was patched, thanks to Dennis Felsch and Christian Mainka for reporting it. Many other bugfixes and minor improvements were made to your favourite CMP, check the complete changelog here. We would like to thank Echelon for making vCenter networking support possible in OpenNebula 4.10.2 through the Fund a Feature program.

Aiming at not missing a beat (not ever!, we just reached the 10 thousand commits mark in OpenNebula), the team also released recently the beta version of OpenNebula 4.12. you can check bugfixes and new features here. We think you will enjoy the new additions, specially the SPICE support in Sunstone, as well as the Virtual Data Center redesign. Also, showback capabilities are included in 4.12, OpenNebula will report resource usage cost, enabling the integration with chargeback and billing platforms, the possibility to flush and disable a system datastore, the introduction of Security Groups, allowing administrators to define the firewall rules and apply them to the Virtual Machines, the ability to use VXLANs in your OpenNebula infrastructure, and many more. Moreover, important new features related to the newly introduced vCenter support are available in OpenNebula 4.12: 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.

If you ever wondered how to build a network overlay between two OpenNebula sites, or between your OpenNebula powered datacenter and any of the supported public clouds (Amazon EC2, MS Azure, IBM SoftLayer), then you are in for a treat. OpenNebula is going to participate in BEACON, the flagship european project bringing SDN and NFC advances to federatd cloud networking. The Project is set to pave the road towards the true start of a revolution in cloud networking, developing the building blocks to enable next generation network functionalities within and across data centers and cloud sites. This will foster the integration of OpenNebula and the SDN OpenDaylight, which we believe are very good news. It is also in line with the results of the European Commission Workshop on Global Cloud Experimental Facilities, placing OpenNebula on networking into the cloud.

But OpenNebula 4.12 is not the only important release of 2015 to date, vOneCloud 1.2 release also hit the road recently! If you haven’t heard yet, vOneCloud is an OpenNebula distribution optimized to work on existing VMware vCenter deployments, easing the deployment of an enterprise-ready OpenNebula cloud in just a few minutes in VMware environments managed by familiar tools such as vSphere and vCenter Operations Manager, enabling cloud provisioning, elasticity and multi-tenancy features. vOneCloud 1.2 comes with new features -it is worth highlighting the automatic import of virtual machines running in a vCenter instance into vOneCloud, with zero downtime- as well as 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-.

Screen Shot 2015-02-24 at 18.27.13


The OpenNebula Project decided to take a step forward and change the good old mailing list to a new discourse forum as the vehicle for community support. This was a well meditated decision which we hope pleases the community, but we will also keep an open ear for alternatives!

The OpenNebula community is very engaged one and never sleeps! Check out this server for recording VM and Host monitoring traffic. Feedback on product flaws (like we receive in the mailing list and now in the new support forum) is crucial for the project. But also very important for the project is the positive feedback, like these received in twitter: blush number one and double blush number two. Keep on keeping on!

Members of the dev team get bored from time to time (not much though, too much work), a come up with amazing stuff for the community like this integration of OpenNebula and Latch.

Pushing OpenNebula to its limits is fun to watch. Like launching 100 CoreOS VMs in 3’21” -2 seconds per VM-. Woah, awesomeness should have a speed limit!


After the second edition of the OpenNebula Conference, we are already preparing for the upcoming, third edition in Barcelona, October 2015. Interested? You are still in time for getting a good price deal for tickets. If you want to share your OpenNebula experiences, the is open as well until the end of March. Moreover, your company may be interested in the sponsorship opportunities for OpenNebulaConf 2015.

OpenNebulaConf 2015

Recently, a spanish speaking video sessions were recording capturing user experiences regarding OpenNebula, called Jornadas Rediris. If you are fluent in spanish, check the recordings because there were really good contents and insights.

We are also fostering a number of OpenNebula Technology days in several cities across the world. We will start with the Prague in the Czech Republic this 25th of March, and we plan to follow with other cities including Chicago, Dallas and Dublin. Send us an email or send it to the community discuss mailing list if you are interested in hosting a TechDay event.

During the following months, members of the OpenNebula team will be speaking in the following events:

We want to highlight the strong presence the OpenNebula project will have in the Cloud Expo Europe 2015, this 11th and 12th of March in London. OpenNebula will sponsor one of the corners of the Open Cloud & Developer Park. Besides several members of the OpenNebula Team, partners that add value to OpenNebula will be present, like viApps, CloudWeavers as well as OpenNebula Systems, the company behind OpenNebula. If you are in London, come round for some special OpenNebula talks!

If you are interested in receiving OpenNebula training, check the schedule for 2015 public classes at OpenNebula Headquarters. Please contact us if your would like to request training near you.

Remember that you can see slides and resources from past events in our Events page. We have also created a Slideshare account where you can see the slides from some of our recent presentations.

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