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Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
99e4b30b39
The domain XML now understands the <listen> subelement of its <graphics> element (including when listen type='network'), and the network driver has an internal API that will turn a network name into an IP address, so the final logical step is to put the glue into the qemu driver so that when it is starting up a domain, if it finds <listen type='network' network='xyz'/> in the XML, it will call the network driver to get an IPv4 address associated with network xyz, and tell qemu to listen for vnc (or spice) on that address rather than the default address (localhost). The motivation for this is that a large installation may want the guests' VNC servers listening on physical interfaces rather than localhost, so that users can connect directly from the outside; this requires sending qemu the appropriate IP address to listen on. But this address will of course be different for each host, and if a guest might be migrated around from one host to another, it's important that the guest's config not have any information embedded in it that is specific to one particular host. <listen type='network.../> can solve this problem in the following manner: 1) on each host, define a libvirt network of the same name, associated with the interface on that host that should be used for listening (for example, a simple macvtap network: <forward mode='bridge' dev='eth0'/>, or host bridge network: <forward mode='bridge'/> <bridge name='br0'/> 2) in the <graphics> element of each guest's domain xml, tell vnc to listen on the network name used in step 1: <graphics type='vnc' port='5922'> <listen type='network'network='example-net'/> </graphics> (all the above also applies for graphics type='spice'). |
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.gnulib@41a7841a82 | ||
daemon | ||
docs | ||
examples | ||
include | ||
m4 | ||
po | ||
python | ||
src | ||
tests | ||
tools | ||
.dir-locals.el | ||
.gitignore | ||
.gitmodules | ||
.mailmap | ||
AUTHORS | ||
autobuild.sh | ||
autogen.sh | ||
bootstrap | ||
bootstrap.conf | ||
cfg.mk | ||
ChangeLog-old | ||
configure.ac | ||
COPYING.LIB | ||
HACKING | ||
libvirt.pc.in | ||
libvirt.spec.in | ||
Makefile.am | ||
Makefile.nonreentrant | ||
mingw32-libvirt.spec.in | ||
README | ||
README-hacking | ||
TODO |
LibVirt : simple API for virtualization Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C API initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms if needed. Daniel Veillard <veillard@redhat.com>