OpenVZ 7.0 发布 Linux 虚拟化技术

OpenVZ 7.0 发布了，以下是该版本一些值得关注的内容：

* OpenVZ 7.0 becomes a complete Linux distribution based on our own VzLinux.

* The main difference between the Virtuozzo (commercial) and OpenVZ (free)
versions are the EULA, packages with paid features, and Anaconda installer.

* The user documentation is publicly available [1].

* EZ templates can be used instead of tarballs with template caches.

* Additional features (see below)

This OpenVZ 7.0 release provides the following major improvements:

* RHEL7 (3.10+) kernel.

* KVM/QEMU hypervisor.

* Guest tools for virtual machines that currently allow the following: to
execute commands in VMs from the host, to set user passwords, to set and obtain
network settings, to change SIDs, to enter VMs.

查看完整改进记录，可查看发布说明。

OpenVZ是基于Linux内核和作业系统的操作系统级虚拟化技术。OpenVZ允许物理服务器运行多个操作系统，被称虚拟专用服务器（VPS，Virtual Private Server）或虚拟环境（VE, Virtual Environment）。

与VMware这种虚拟机和Xen这种半虚拟化技术相比，OpenVZ的host OS和guest OS都必需是Linux（虽然在不同的虚拟环境里可以用不同的Linux发行版）。但是，OpenVZ声称这样做有性能上的优势。根据OpenVZ网站的说法，使用OpenVZ与使用独立的服务器相比，性能只会有1-3%的损失。

OpenVZ是SWsoft, Inc.公司开发的专有软件Virtuozzo的基础。OpenVZ的授权为GPLv2。

OpenVZ由两部分组成，一个经修改过的操作系统核心与及用户工具。

一些链接：
[1] https://docs.openvz.org/
[2] https://download.openvz.org/virtuozzo/releases/7.0/x86_64/iso/
[3] https://mirrors.openvz.org/
[4] https://src.openvz.org/projects/OVZ
[5] https://bugs.openvz.org/