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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}} , [[wikipedia:OpenVZ]] or [[wikipediaComparison|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. OpenVZtools (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.
<div style="border: none; border-left: 8px solid #7dae96; padding: 10px; margin: 20px; background: #f7f9fa;" class="plainlinks">OpenVZ is the basis of [http://www.parallelsodin.com/products/virtuozzo Parallels / '''Virtuozzo Containers'''], a commercial virtualization solution offered by [http://www.parallelsodin.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/ Parallelsproducts/virtuozzo/ click here]. OpenVZ project <b>https://openvz.org/i/openvz_88x31.gif is supported by [http://www.parallelsodin.comhttps:// Parallelsopenvz.org/i/Odin_31x67.png] and [https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=XCJ27K5LJDZY4 <big>{{green|your donations}}</big>].</b></div>
== 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.
A comprehensive (although somewhat old) {{PDFlink|[[download:doc/OpenVZ-Users-Guide.pdf|doc/OpenVZ-Users-Guide.pdf]]| 1.3 MB}} is a good start. This wiki also has a lot of information (use search function, see [[Special:Categories|list of all categories]] or [[Special:Allpages|list of all pages]]. == 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://www.odin.com/products/plesk/ Plesk Panel] for using inside a container* [http://owp.softunity.com.ru/ OVZ Web panel] for managing containers == Contribution == OpenVZ is project with open processes and development artifacts. It means everyone can participate in [[Development_portal|development]], [[QA|testing]] or discussing of OpenVZ. Also we have a bunch of articles for [[Contribute|OpenVZ contributors]].
== Support ==
== This wiki ==
Below are a few links you can start from. In addition, you might want to take a look at the list of [[Special:Categories|all categories]] or [[Special:Allpages|all pages]].
;[[:Category: Concepts|Concepts]]
: OpenVZ and virtualization concepts
;[[:Category: Kernel|Kernel]]
: Articles concerning OpenVZ kernel
;[[:Category:Troubleshooting|Troubleshooting]]
: What to do if something fails
;[[:Category:Networking|Networking]]
: Networking-related articles
;[[:Category:Storage|Storage]]
: Storage-related articles (mostly [[ploop]] and [[pstorage]])
;[[:Category:HOWTO|HOWTOs]]
: How to do something
;[[:Category:Definitions|Definitions]]
: Short definitions of various terms used in OpenVZ
=== Tag cloud =Audio ==These are the main categories (tags) used in this Wiki. The bigger the word is, the more articles are under this category.{{:Podcasts}}
== External links ==
* [[wikipedia:OpenVZ]]
* [http://criu.org criu.org]
* [[meta:Help:Editing]]