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################################# __ __ _ _ ____ \ \/ /___ _ __ | || | |___ \ \ // _ \ '_ \ | || |_ __) | / \ __/ | | | |__ _| / __/ /_/\_\___|_| |_| |_|(_)_____| ################################# http://www.xen.org/ What is Xen? ============ Xen is a Virtual Machine Monitor (VMM) originally developed by the Systems Research Group of the University of Cambridge Computer Laboratory, as part of the UK-EPSRC funded XenoServers project. Xen is freely-distributable Open Source software, released under the GNU GPL. Since its initial public release, Xen has grown a large development community, spearheaded by xen.org (http://www.xen.org). The 4.2 release offers excellent performance, hardware support and enterprise-grade features such as x86_32-PAE, x86_64, SMP guests and live relocation of VMs. Ports to Linux, NetBSD, FreeBSD and Solaris are available from the community. This file contains some quick-start instructions to install Xen on your system. For full documentation, see the Xen User Manual. If this is a pre-built release then you can find the manual at: dist/install/usr/share/doc/xen/pdf/user.pdf If you have a source release, then 'make -C docs' will build the manual at docs/pdf/user.pdf. Quick-Start Guide ================= First, there are a number of prerequisites for building a Xen source release. Make sure you have all the following installed, either by visiting the project webpage or installing a pre-built package provided by your OS distributor: * GCC v3.4 or later * GNU Make * GNU Binutils * Development install of zlib (e.g., zlib-dev) * Development install of Python v2.3 or later (e.g., python-dev) * Development install of curses (e.g., libncurses-dev) * Development install of openssl (e.g., openssl-dev) * Development install of x11 (e.g. xorg-x11-dev) * Development install of uuid (e.g. uuid-dev) * Development install of yajl (e.g. libyajl-dev) * Development install of libaio (e.g. libaio-dev) version 0.3.107 or greater. Set CONFIG_SYSTEM_LIBAIO in .config if this is not available. * Development install of GLib v2.0 (e.g. libglib2.0-dev) * pkg-config * bridge-utils package (/sbin/brctl) * iproute package (/sbin/ip) * hotplug or udev * GNU bison and GNU flex * GNU gettext * 16-bit x86 assembler, loader and compiler (dev86 rpm or bin86 & bcc debs) * ACPI ASL compiler (iasl) * markdown In addition to the above there are a number of optional build prerequisites. Omitting these will cause the related features to be disabled at compile time: * Development install of Ocaml (e.g. ocaml-nox and ocaml-findlib). Required to build ocaml components which includes the alternative ocaml xenstored. Second, you need to acquire a suitable kernel for use in domain 0. If possible you should use a kernel provided by your OS distributor. If no suitable kernel is available from your OS distributor then refer to http://wiki.xen.org/wiki/XenDom0Kernels for suggestions for suitable kernels to use. If you are looking to compile a Dom0 kernel from source, please refer to http://wiki.xen.org/wiki/XenParavirtOps. [NB. Unless noted otherwise, all the following steps should be performed with root privileges.] 1. Download and untar the source tarball file. This will be a file named xen-unstable-src.tgz, or xen-$version-src.tgz. You can also pull the current version from the mercurial repository at http://xenbits.xen.org/ # tar xzf xen-unstable-src.tgz Assuming you are using the unstable tree, this will untar into xen-unstable. The rest of the instructions use the unstable tree as an example, substitute the version for unstable. 2. cd to xen-unstable (or whatever you sensibly rename it to). 3. For the very first build, or if you want to destroy build trees, perform the following steps: # ./configure # make world # make install If you want, you can run ./configure --help to see the list of options available options when building and installing Xen. This will create and install onto the local machine. It will build the xen binary (xen.gz), the tools and the documentation. You can override the destination for make install by setting DESTDIR to some value. 4. To rebuild an existing tree without modifying the config: # make dist This will build and install xen, tools, and docs into the local dist/ directory. You can override the destination for make install by setting DISTDIR to some value. make install and make dist differ in that make install does the right things for your local machine (installing the appropriate version of hotplug or udev scripts, for example), but make dist includes all versions of those scripts, so that you can copy the dist directory to another machine and install from that distribution. Python Runtime Libraries ======================== Xend (the Xen daemon) has the following runtime dependencies: * Python 2.3 or later. In some distros, the XML-aspects to the standard library (xml.dom.minidom etc) are broken out into a separate python-xml package. This is also required. In more recent versions of Debian and Ubuntu the XML-aspects are included in the base python package however (python-xml has been removed from Debian in squeeze and from Ubuntu in intrepid). URL: http://www.python.org/ Debian: python * For optional SSL support, pyOpenSSL: URL: http://pyopenssl.sourceforge.net/ Debian: python-pyopenssl * For optional PAM support, PyPAM: URL: http://www.pangalactic.org/PyPAM/ Debian: python-pam * For optional XenAPI support in XM, lxml: URL: http://lxml.de/ Debian: python-lxml YUM: python-lxml Intel(R) Trusted Execution Technology Support ============================================= Intel's technology for safer computing, Intel(R) Trusted Execution Technology (Intel(R) TXT), defines platform-level enhancements that provide the building blocks for creating trusted platforms. For more information, see http://www.intel.com/technology/security/. Intel(R) TXT support is provided by the Trusted Boot (tboot) module in conjunction with minimal logic in the Xen hypervisor. Tboot is an open source, pre- kernel/VMM module that uses Intel(R) TXT to perform a measured and verified launch of an OS kernel/VMM. The Trusted Boot module is available from http://sourceforge.net/projects/tboot. This project hosts the code in a mercurial repo at http://tboot.sourceforge.net/hg/tboot.hg and contains tarballs of the source. Instructions in the tboot README describe how to modify grub.conf to use tboot to launch Xen. There are optional targets as part of Xen's top-level makefile that will download and build tboot: install-tboot, build-tboot, dist-tboot, clean-tboot. These will download the latest tar file from the SourceForge site using wget, then build/install/dist according to Xen's settings.