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OpenVZ is container-based virtualization for Linux. OpenVZ creates multiple secure, isolated Linux containers (otherwise known as VEs or VPSs) on a single physical server enabling better server utilization and ensuring that applications do not conflict. Each container performs and executes exactly like a stand-alone server; a container can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries and configuration files. For more information about the technology and how it differs from the others like Xen, VMware etc., see [[introduction to virtualization]], {{PDFlink|[[download:doc/openvz-intro.pdf|doc/openvz-intro.pdf]]|73 KB}} or , [[wikipedia:OpenVZ]] or [[Comparison|comparison table]].
OpenVZ software consists of an optional custom Linux kernel and command-line tools (mainly vzctl). Our kernel developers work hard to merge containers functionality into the upstream Linux kernel, making OpenVZ team the biggest contributor to Linux Containers (LXC) kernel, with features such as PID and network namespaces, memory controller, checkpoint-restore (see [http://criu.org CRIU.org]) and much more. OpenVZ tools (vzctl) is a solid alternative to LXC tools, see [[vzctl for upstream kernel]] for more details. While OpenVZ can be used with recent upstream kernel, we recommend using OpenVZ kernel for security, stability and features.
OpenVZ is free open source software, available under GNU GPL.
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OpenVZ is the basis of [http://www.odin.com/products/virtuozzo/ '''Virtuozzo'''], a commercial virtualization solution offered by [http://www.odin.com Odin]. Virtuozzo is optimized for hosters and offers hypervisor (VMs in addition to containers), distributed cloud storage, dedicated support, management tools, and easy installation. To learn more about Virtuozzo and request a free trial, please [http://www.odin.com/products/virtuozzo/ click here].
<b>https://openvz.org/i/openvz_88x31.gif is supported by [http://www.odin.com https://openvz.org/i/parallels_logoOdin_31x67.png] and [https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=XCJ27K5LJDZY4 <big>{{green|your donations}}</big>].</b>
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== Installation and usage ==
OpenVZ is easy to install if you already have Linux installed on your machine. See [[quick installation]] for installation info. Alternatively, you can try a [[Download live CD|live CD]] to test drive the technology without a need to install anything.
== Control panels ==
OpenVZ comes with command line tools only. If you need management tools, consider upgrade to [http://www.odin.com/products/virtuozzo/ Virtuozzo].
Also, there is a list of third-party software (both free and proprietary) available at [[Control panels]].
If you can't make your choice, we recommend:
* [http://spwww.parallelsodin.com/products/plesk/ Parallels PleskPanel] for using inside a container
* [http://owp.softunity.com.ru/ OVZ Web panel] for managing containers
== Support ==
Odin is now offering an [http://www.odin.com/support/virtualization-suite/openvz/ OpenVZ Maintenance Partnership program]. The program provides bug resolution support and feature development to the OpenVZ community. The OpenVZ Maintenance Partnership has a small annual fee and provides two benefits to partnership members.
* Partnership members will receive a support ID that will allow them to submit up to10 high priority bugs per year. These bugs will be placed at the highest priority level in the development stack.
=== Free support ===
Please read the documentation before asking questions. Check the [[FAQ]], use [[google:openvz|Google]], search both this wiki and the [http://forum.openvz.org/index.php?t=search forum]. If this doesn't help, ask on either [[forum:|forum]] or a [[mailing list]]. Please report all bugs to [httphttps://bugzillabugs.openvz.org/ OpenVZ bugzillabug tracker].
== This wiki ==
;[[:Category:Definitions|Definitions]]
: Short definitions of various terms used in OpenVZ
;[[History]]
: list of major project milestones
;[[Interviews]]
: public conversations with OpenVZ developers
;[[Comparison]]
: to other container solutions
;[[Roadmap]]
: past and future releases of OpenVZ and its components
== Audio ==
{{:Podcasts}}
== External links ==
* [[wikipedia:OpenVZ]]
* [http://criu.org criu.org]
* [[meta:Help:Editing]]
