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( => ( => ( => Apache CloudStack [pageid] => 35956878 ) =>
""CloudStack Logo.png
"Original author(s) ", "Citrix
"Developer(s) "Apache Software Foundation
"Stable release [1] / January 3, 2017; 9 months ago (2017-01-03)[1]
Written in "Java (primarily)
"Operating system Cross-platform for management servers, GNU/Linux for hosts, Windows, GNU/Linux, and BSD for guests (depending on hypervisor).[2]
"Platform "Java
"Type "Cloud computing
"License "Apache License 2

CloudStack is an "open source "cloud computing software for creating, managing, and deploying "infrastructure cloud services. It uses existing "hypervisors such as "KVM, "VMware ESXi and "XenServer/XCP for virtualization. In addition to its own API, CloudStack also supports the "Amazon Web Services (AWS) API[3] and the "Open Cloud Computing Interface from the "Open Grid Forum.[4]



CloudStack was originally developed by, formerly known as VMOps.[5] was first registered in 1992 as a BBS system offering telnet, ftp, lynx, gopher and archie services, "Cloud City Online" by John Bilik in "Lake Zurich, Il. The domain was hijacked several years later and sold multiple times.

A company called VMOps was founded by "Sheng Liang, Shannon Williams, "Alex Huang, Will Chan, and Chiradeep Vittal in 2008.[6][7] The company raised a total of $17.6M in venture funding[8] from "Redpoint Ventures, Nexus Ventures and "Index Ventures (Redpoint and Nexus led the initial Series A funding round). The company changed its name from VMOps to on May 4, 2010, when it emerged from "stealth mode by announcing its product.[9][10][11] was based in "Cupertino, "California.

In May 2010, released most of CloudStack as "free software under the "GNU General Public License, version 3 (GPLv3). They kept about 5% proprietary.[12] and Citrix both supported "OpenStack, another Apache-licensed cloud computing program, at its announcement in July 2010.[13][14][15]

In October 2010, announced a partnership with "Microsoft to develop the code to provide integration and support of Windows Server 2008 R2 Hyper-V to the OpenStack project.[16]

In July 2011, was acquired by "Citrix Systems.[17] The CloudStack software then became available under "Apache Software License and further development governed by the "Apache Foundation.

"Citrix purchased on July 12, 2011, for approximately $200 million.[18][19] In August 2011, Citrix released the remaining code under GPLv3 and continued moving towards more open processes.[12] In February 2012, Citrix released CloudStack 3.0. Among other features, this added support for "Swift, OpenStack's S3-like object storage solution.[20] In April 2012, Citrix donated CloudStack to the "Apache Software Foundation (ASF), where it was accepted into the "Apache Incubator; Citrix changed the license to the "Apache License version 2. As part of this change, Citrix also ceased their involvement in "OpenStack.[21] On November 6, 2012, CloudStack 4.0.0-incubating was announced,[22] the first stable release after joining ASF. On March 20, 2013, CloudStack graduated from Apache Incubator and became a "Top-Level Project (TLP) of ASF.[23] The first stable (maintenance) release after graduation is CloudStack 4.0.2.[24]

Key features[2][edit]

Supported hypervisors[edit]

BareMetal hosts[edit]

Deployment architecture[edit]

The minimum production installation consists of one machine running the CloudStack Management Server and another machine to act as the cloud infrastructure (in this case, a very simple infrastructure consisting of one host running hypervisor software). In its smallest deployment, a single machine can act as both the Management Server and the hypervisor host (using the KVM hypervisor).[25]

Multiple management servers can be configured for redundancy and load balancing, all pointing to a common "MySQL database.


In July 2012 it was reported that "Datapipe launched the largest international public cloud to be built on CloudStack, which included 6 data centers in the USA, Britain, and Asia.[26]

Apache CloudStack has a number of users:[27][28]


  1. ^ a b "Apache CloudStack GitHub Releases". 
  2. ^ a b "Features". CloudStack. Retrieved 2016-09-02. 
  3. ^ "Supported AWS API Calls". Retrieved May 17, 2013. 
  4. ^ "OCCI Interface to CloudStack". Retrieved Feb 26, 2014. 
  5. ^ " takes on virty infrastructure". The Channel. May 4, 2010. Retrieved May 27, 2012. 
  6. ^ John Fontana (January 28, 2009). "Start-up VMOps aims to ease cloud deployments". Network World. Retrieved June 1, 2013. 
  7. ^ "Company Overview". VMOps web site. Archived from the original on January 22, 2009. Retrieved June 1, 2013. 
  8. ^ "More Cash for Hot New Cloud Startup, VMOps". February 18, 2010. Retrieved June 18, 2012. 
  9. ^ " Launches, Extends Leadership Team and Announces New Funding". Press release. May 4, 2010. Retrieved June 1, 2013. 
  10. ^ Timothy Prickett Morgan (May 4, 2010). " takes on virty infrastructure". The Channel. Retrieved June 1, 2013. 
  11. ^ Dave Rosenberg (May 4, 2010). " software stack goes open source". Software, Interrupted. CNET News. Retrieved June 18, 2012. 
  12. ^ a b "CloudStack Process Changes: Working the Apache Way". CloudStack. April 17, 2012. Retrieved May 27, 2012. 
  13. ^ "NASA and Rackspace open source cloud fluffer". The Register. July 19, 2010. Retrieved May 27, 2012. 
  14. ^ Peder Ulander (July 22, 2010). "You Are Now Free to Move About in the Cloud". OpenStack blog. Retrieved June 1, 2013. 
  15. ^ Clark, Jack (July 19, 2010). "Nasa, Rackspace launch OpenStack cloud interoperability scheme | Cloud | ZDNet UK". Retrieved June 18, 2012. 
  16. ^ Harris, Derrick Harris (October 22, 2010). "Microsoft Joins OpenStack to Add Hyper-V Support." Retrieved November 2011.
  17. ^ "Citrix &". July 12, 2011. Retrieved June 18, 2012. 
  18. ^ "Citrix Makes a Run at the Cloud". BusinessWeek. July 14, 2011. Retrieved May 27, 2012. 
  19. ^ "Citrix Buys for More Than $200 Million; Redpoint Is on a Roll". TechCrunch. July 12, 2011. Retrieved May 27, 2012. 
  20. ^ "Citrix CloudStack 3 Brings the Power of Amazon-Style Clouds to Customers of All Sizes". Citrix. February 13, 2012. Retrieved May 27, 2012. 
  21. ^ "Citrix Splits With OpenStack, Takes Cloud to Apache". Wired. April 4, 2012. Retrieved May 27, 2012. 
  22. ^ "Apache CloudStack 4.0.0-incubating Released". Apache Software Foundation. November 6, 2012. Retrieved May 17, 2013. 
  23. ^ "CloudStack Project Incubation Status". Apache Software Foundation. March 20, 2013. Retrieved May 17, 2013. 
  24. ^ "Apache CloudStack 4.0.2 Released". Apache Software Foundation. April 24, 2013. Retrieved May 17, 2013. 
  25. ^ "Deployment Architecture Overview". CloudStack. Retrieved May 17, 2013. 
  26. ^ "Datapipe launches largest CloudStack deployment". NetworkWorld. July 17, 2012. Retrieved Jan 31, 2013. 
  27. ^ "Are these people really all using CloudStack?". 
  28. ^ "CloudStack Users Apache Wiki". 

External links[edit]

User groups[edit]

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