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From Ajith Ranabahu <>
Subject Re: [VOTE] CloudStack for Apache Incubator
Date Tue, 10 Apr 2012 14:53:43 GMT
+1 (non binding)

On Tue, Apr 10, 2012 at 10:51 AM, Davanum Srinivas <> wrote:
> +1 binding
> -- dims
> On Apr 10, 2012, at 9:52 AM, Daniel Kulp <> wrote:
>> +1  binding
>> Dan
>> On Monday, April 09, 2012 06:32:24 PM Kevin Kluge wrote:
>>> Hi All.  I'd like to call for a VOTE for CloudStack to enter the
>>> Incubator.  The proposal is available at [1] and I have also included it
>>> below.   Please vote with: +1: accept CloudStack into Incubator
>>> +0: don't care
>>> -1: do not accept CloudStack into Incubator (please explain the objection)
>>> The vote is open for at least 72 hours from now (until at least 19:00
>>> US-PST on April 12, 2012).
>>> Thanks for the consideration.
>>> -kevin
>>> [1]
>>> Abstract
>>> CloudStack is an IaaS ("Infrastracture as a Service") cloud orchestration
>>> platform.
>>> Proposal
>>> CloudStack provides control plane software that can be used to create an
>>> IaaS cloud. It includes an HTTP-based API for user and administrator
>>> functions and a web UI for user and administrator access. Administrators
>>> can provision physical infrastructure (e.g., servers, network elements,
>>> storage) into an instance of CloudStack, while end users can use the
>>> CloudStack self-service API and UI for the provisioning and management of
>>> virtual machines, virtual disks, and virtual networks.
>>> Citrix Systems, Inc. submits this proposal to donate the CloudStack source
>>> code, documentation, websites, and trademarks to the Apache Software
>>> Foundation ("ASF").
>>> Background
>>> Amazon and other cloud pioneers invented IaaS clouds. Typically these
>>> clouds provide virtual machines to end users. CloudStack additionally
>>> provides baremetal OS installation to end users via a self-service
>>> interface. The management of physical resources to provide the larger
>>> goal of cloud service delivery is known as "orchestration". IaaS clouds
>>> are usually described as "elastic" -- an elastic service is one that
>>> allows its user to rapidly scale up or down their need for resources.
>>> A number of open source projects and companies have been created to
>>> implement IaaS clouds. started CloudStack in 2008 and released
>>> the source under GNU General Public License version 3 ("GPL v3") in 2010.
>>> Citrix acquired, including CloudStack, in 2011. Citrix
>>> re-licensed the CloudStack source under Apache License v2 in April, 2012.
>>> Rationale
>>> IaaS clouds provide the ability to implement datacenter operations in a
>>> programmable fashion. This functionality is tremendously powerful and
>>> benefits the community by providing:
>>> - More efficient use of datacenter personnel
>>> - More efficient use of datacenter hardware
>>> - Better responsiveness to user requests
>>> - Better uptime/availability through automation
>>> While there are several open source IaaS efforts today, none are governed
>>> by an independent foundation such as ASF. Vendor influence and/or
>>> proprietary implementations may limit the community's ability to choose
>>> the hardware and software for use in the datacenter. The community at
>>> large will benefit from the ability to enhance the orchestration layer as
>>> needed for particular hardware or software support, and to implement
>>> algorithms and features that may reduce cost or increase user
>>> satisfaction for specific use cases. In this respect the independent
>>> nature of the ASF is key to the long term health and success of the
>>> project.
>>> Initial Goals
>>> The CloudStack project has two initial goals after the proposal is
>>> accepted and the incubation has begun.
>>> The Cloudstack Project's first goal is to ensure that the CloudStack
>>> source includes only third party code that is licensed under the Apache
>>> License or open source licenses that are approved by the ASF for use in
>>> ASF projects. The CloudStack Project has begun the process of removing
>>> third party code that is not licensed under an ASF approved license. This
>>> is an ongoing process that will continue into the incubation period.
>>> Third party code contributed to CloudStack under the CloudStack
>>> contribution agreement was assigned to in exchange for
>>> distributing CloudStack under GPLv3. The CloudStack project has begun the
>>> process of amending the previous CloudStack contribution agreements to
>>> obtain consent from existing contributors to change the CloudStack
>>> project's license. In the event that an existing contributor does not
>>> consent to this change, the project is prepared to remove that
>>> contributor's code. Additionally, there are binary dependencies on
>>> redistributed libraries that are not provided with an ASF-approved
>>> license. Finally, the CloudStack has source files incorporated from third
>>> parties that were not provided with an ASF-approved license. We have
>>> begun the process of re-writing this software. This is an ongoing process
>>> that will extend into the incubation period. These issues are discussed
>>> in more detail later in the proposal.
>>> Although CloudStack is open source, many design documents and discussions
>>> that should have been publicly available and accessible were not
>>> publicized. The Project's second goal will be to fix this lack of
>>> transparency by encouraging the initial committers to publicize technical
>>> documentation and discuss technical issues in a public forum.
>>> Current Status
>>> Meritocracy
>>> CloudStack was originally developed by Sheng Liang, Alex Huang, Chiradeep
>>> Vittal, and Will Chan. Since the initial CloudStack version,
>>> approximately 30 others have made contributions to the project. Today,
>>> Sheng and Will are less involved in code development, but others have
>>> stepped in to continue the development of their seminal contributions.
>>> Most of the current code contributors are paid contributors, employed by
>>> Citrix. Over the past six months CloudStack has received several
>>> contributions from non-Citrix employees for features and bug fixes that
>>> are important to the contributors. We have developed a process for
>>> accepting these contributions that includes validating the execution of a
>>> CLA and incorporating the contribution in the CloudStack in a manner that
>>> reflects the contributor's identity. This process has not followed the
>>> Apache model.
>>> The CloudStack Project has had an open bug database for two years. While
>>> this database includes ideas for enhancements to CloudStack, the
>>> committers have historically not asked the greater community for pointed
>>> assistance. Going forward the Project will encourage all community
>>> members to become committers and will make clear suggestions for features
>>> and bug fixes that would most benefit the community and Project.
>>> Community
>>> CloudStack has an existing community comprising approximately 8,000 forum
>>> members on and 28,000 registrations for e-mail lists and
>>> newsletters relating to CloudStack. All forums, developer and
>>> administrator mailing lists, and IRC channels are active. A number of
>>> commercial entities (e.g., RightScale, AppFog, EnStratus) and open source
>>> projects (e.g., jClouds, Chef) have integrated with CloudStack.
>>> To date, the community comprises users - people that download a CloudStack
>>> binary and install it to implement an IaaS cloud. The project expects
>>> that with independent governance and the openness of the Apache
>>> development model we will significantly increase the amount of developer
>>> participation within the community.
>>> Core Developers
>>> CloudStack spans a wide array of technologies: user interface,
>>> virtualization, storage, networking, fault tolerance, database access and
>>> data modeling, and Java, Python, and bash programming. There is
>>> significant diversity of knowledge and experience in this regard.
>>> Several of the initial committers have experience with other open source
>>> projects. Alex Huang contributed to SCM-bug. Anthony Xu, Edison Su, Frank
>>> Zhang, and Sheng Yang have prior experience with a combination of Xen and
>>> KVM. Chiradeep Vittal has contributed to OpenStack. David Nalley has been
>>> contributing to Fedora for several years. David has also contributed to
>>> Zenoss, Cobbler, GLPI, OCS-NG, OpenGroupware, Ceph, and Sheepdog.
>>> CloudStack development to date has largely been done in the U.S. and
>>> India.
>>> CloudStack has largely been developed by paid contributors.
>>> Alignment
>>> CloudStack has significant integration with existing Apache projects, and
>>> there are several exciting opportunities for future cross-project
>>> collaboration.
>>> The CloudStack Management Server (i.e., the control plane) is deployed as
>>> a web application inside one or more Tomcat instances.
>>> The Management Server uses Apache Web Services, Apache Commons, Apache XML
>>> RPC, Apache log4j, and Apache HttpComponents httpcore. It is built with
>>> Apache Ant.
>>> There are strong opportunities for collaboration with other Apache
>>> Projects. Collaboration with Hadoop has at least two exciting aspects: -
>>> CloudStack could provide an object store technology (similar to Amazon's
>>> S3 service) in conjunction with the compute service (similar to Amazon's
>>> EC2 service) that it already offers. HDFS from the Hadoop project is a
>>> promising technology for the implementation of the object store. - It
>>> would also be possible to have CloudStack provision Hadoop compute nodes,
>>> either through virtualization or directly to baremetal. With this
>>> CloudStack could become an optional or required part of the
>>> infrastructure control plane for Hadoop.
>>> ZooKeeper might be helpful to implement a distributed cloud control plane
>>> in the future.
>>> Derby could be used as alternative database; CloudStack currently uses
>>> MySQL.
>>> ActiveMQ is a good option for some of the communication that occurs in the
>>> orchestration of the cloud.
>>> It would be natural for Apache libcloud and Apache DeltaCloud to support
>>> the CloudStack API and public clouds that expose it.
>>> As mentioned earlier the proposers are seeking an independent foundation
>>> to provide governance for the project. ASF has clearly been successful in
>>> providing this, and we believe ASF is the best match for the future goals
>>> of the project.
>>> Known Risks
>>> Orphaned products
>>> Citrix will work with the community to create the most widely deployed
>>> cloud orchestration software. Citrix's internal "plan of record" commits
>>> significant budget to developing the Project through 2014. Investment
>>> past 2014 is unspecified, but likely to continue given known and
>>> predicted revenues from derivative commercial products.
>>> Citrix is developing a thriving business in conjunction with the prior and
>>> continued success of the community and use of CloudStack. The project may
>>> be orphaned in the condition where the Project has failed to obtain
>>> either non-paid committers or paid committers from other vendors, and the
>>> committers paid by Citrix are re-assigned to another project.
>>> Inexperience with Open Source
>>> CloudStack has been open source since May, 2010, with the CloudStack 2.0
>>> release by
>>> From May, 2010 to August, 2011 CloudStack was "open core", wherein
>>> approximately 95% of the code was available with a GPLv3 license and 5%
>>> of the code was proprietary. During this time the bug database was open
>>> and the source code was available. Project direction and technical
>>> discussions occurred in a closed fashion. Few technical documents were
>>> publicly available.
>>> In August, 2011 CloudStack transitioned to 100% open source. The 5%
>>> proprietary code was released publicly with a GPLv3 license. The bug
>>> database remained open. Project direction and technical discussions
>>> occurred in a closed fashion. Some technical documents were shared
>>> publicly.
>>> During 2012 the proposers have posted a significant fraction of technical
>>> documents pertaining to the recent CloudStack 3.0 release publicly. Some
>>> technical discussion has occurred in the open.
>>> In April, 2012 CloudStack was re-licensed under the Apache License v2.
>>> Several contributors have prior open source experience. This is discussed
>>> in the "Core Developers" section.
>>> The CloudStack development process must change significantly to conform to
>>> the Apache model. These changes include: carry on all technical
>>> conversations in a public forum, develop all technical documentation
>>> publicly, follow the vote process on contribution approvals, and promote
>>> individuals beyond the initial committers to committer status, based on
>>> merit.
>>> Homogenous Developers
>>> The Project has committers in two locations in India, one location in the
>>> UK, and one location in the U.S. The technical knowledge of the
>>> committers is diverse, as evidenced by the wide range of technologies
>>> that converge in CloudStack. The range of professional experience of the
>>> committers is diverse as well, from a few months to 20+ years.
>>> The initial committers are all associated with the sponsoring entity. The
>>> Project will have to work with the community to diversify in this area.
>>> Reliance on Salaried Developers
>>> The initial committers are all salaried committers.
>>> The initial committers have worked with great devotion to the project and
>>> have enjoyed its success. We hope this will create an emotional bond to
>>> the project that will last beyond their employment with Citrix Systems.
>>> We expect salaried committers from a variety of companies. CloudStack is
>>> an opportunity for many vendors to enable their software and hardware to
>>> participate in the changes brought by the development of an API that can
>>> manage datacenter infrastructure. It is also an opportunity for
>>> datacenter operators to implement features they find helpful and share
>>> them with the community.
>>> We hope to attract unpaid committers. CloudStack is interesting technology
>>> that solves many challenging problems, and cloud computing is popular in
>>> the industry media now. But, few people will run a CloudStack deployment
>>> for personal use, and this may limit our ability to attract unpaid
>>> committers. We hope that the technical domain is interesting to new
>>> committers that will join us in improving CloudStack.
>>> Relationships with Other Apache Products
>>> Please see the Alignment section above.
>>> Apache Brand Awareness
>>> We expect that licensing CloudStack under the AL and associating it with
>>> the Apache brand will attract additional contributors and CloudStack
>>> users. However, we have selected the ASF as the best governance option
>>> for the project for the reasons discussed in the Rationale. Further, we
>>> expect to continue development of the CloudStack under the AL with or
>>> without the support of ASF.
>>> Citrix currently sells a proprietary version of CloudStack released as
>>> "Citrix CloudStack". For the foreseeable future, Citrix expects to
>>> continue to sell orchestration software based on CloudStack. Citrix will
>>> work with the ASF Incubator PMC and within the Podling Branding
>>> guidelines to ensure that a new branding scheme is selected for Citrix's
>>> proprietary version of CloudStack that is consistent with ASF's branding
>>> policies.
>>> Documentation
>>> The CloudStack project has publicly available administrator documentation,
>>> source code, forums, and technical specifications. This documentation is
>>> available at the following sites: - forums, latest
>>> news, downloads, blogs; a good starting point. -
>>> installation guide, administration guide, API
>>> documentation, technical specifications -
>>> past and future release plans,
>>> additional technical documentation - current
>>> source. See the 3.0.x and master branches.
>>> Initial Source
>>> The genesis of CloudStack's source is discussed in the "Inexperience with
>>> Open Source" section.
>>> Citrix Systems currently owns the CloudStack code base. Committers use the
>>> repository at to access and submit code. This repository is
>>> located in the U.S.
>>> We propose to donate the basis for the 3.0.x series of C
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Ajith Ranabahu

Reading, after a certain age, diverts the mind too much from its
creative pursuits. Any man who reads too much and uses his own brain
too little falls into lazy habits of thinking - Albert Einstein

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