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e7976ea2f4
This is similar to my earlier commit which documented lxc.conf location. Just like LXC, the libxl driver has only the system connection and thus only few places need changing. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
200 lines
4.7 KiB
ReStructuredText
200 lines
4.7 KiB
ReStructuredText
========
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virtxend
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========
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-----------------------------
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libvirt Xen management daemon
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-----------------------------
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:Manual section: 8
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:Manual group: Virtualization Support
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.. contents::
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SYNOPSIS
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========
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``virtxend`` [*OPTION*]...
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DESCRIPTION
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===========
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The ``virtxend`` program is a server side daemon component of the libvirt
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virtualization management system.
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It is one of a collection of modular daemons that replace functionality
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previously provided by the monolithic ``libvirtd`` daemon.
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This daemon runs on virtualization hosts to provide management for Xen virtual
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machines.
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The ``virtxend`` daemon only listens for requests on a local Unix domain
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socket. Remote off-host access and backwards compatibility with legacy
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clients expecting ``libvirtd`` is provided by the ``virtproxy`` daemon.
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Restarting ``virtxend`` does not interrupt running guests. Guests continue to
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operate and changes in their state will generally be picked up automatically
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during startup. None the less it is recommended to avoid restarting with
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running guests whenever practical.
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SYSTEM SOCKET ACTIVATION
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========================
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The ``virtxend`` daemon is capable of starting in two modes.
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In the traditional mode, it will create and listen on UNIX sockets itself.
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In socket activation mode, it will rely on systemd to create and listen
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on the UNIX sockets and pass them as pre-opened file descriptors. In this
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mode most of the socket related config options in
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``/etc/libvirt/virtxend.conf`` will no longer have any effect.
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Socket activation mode is generally the default when running on a host
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OS that uses systemd. To revert to the traditional mode, all the socket
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unit files must be masked:
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::
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$ systemctl mask virtxend.socket virtxend-ro.socket \
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virtxend-admin.socket
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OPTIONS
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=======
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``-h``, ``--help``
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Display command line help usage then exit.
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``-d``, ``--daemon``
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Run as a daemon & write PID file.
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``-f``, ``--config *FILE*``
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Use this configuration file, overriding the default value.
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``-p``, ``--pid-file *FILE*``
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Use this name for the PID file, overriding the default value.
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``-t``, ``--timeout *SECONDS*``
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Exit after timeout period (in seconds), provided there are neither any client
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connections nor any running domains.
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``-v``, ``--verbose``
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Enable output of verbose messages.
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``--version``
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Display version information then exit.
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SIGNALS
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=======
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On receipt of ``SIGHUP`` ``virtxend`` will reload its configuration.
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FILES
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=====
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The ``virtxend`` program must be ran as root. Trying to start the program under
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a different user results in error.
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* ``@SYSCONFDIR@/libvirt/virtxend.conf``
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The default configuration file used by ``virtxend``, unless overridden on the
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command line using the ``-f`` | ``--config`` option.
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In addition to the default configuration file, ``virtxend`` reads
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configuration for the libxl driver from:
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* ``@SYSCONFDIR@/libvirt/libxl.conf``
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This file contains various knobs and default values for virtual machines
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created within libxl driver, and offers a way to override the built in
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defaults, Location of this file can't be overridden by any command line switch.
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* ``@RUNSTATEDIR@/libvirt/virtxend-sock``
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* ``@RUNSTATEDIR@/libvirt/virtxend-sock-ro``
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* ``@RUNSTATEDIR@/libvirt/virtxend-admin-sock``
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The sockets ``virtxend`` will use.
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The TLS **Server** private key ``virtxend`` will use.
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* ``@RUNSTATEDIR@/virtxend.pid``
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The PID file to use, unless overridden by the ``-p`` | ``--pid-file`` option.
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EXAMPLES
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========
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To retrieve the version of ``virtxend``:
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::
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# virtxend --version
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virtxend (libvirt) @VERSION@
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To start ``virtxend``, instructing it to daemonize and create a PID file:
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::
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# virtxend -d
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# ls -la @RUNSTATEDIR@/virtxend.pid
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-rw-r--r-- 1 root root 6 Jul 9 02:40 @RUNSTATEDIR@/virtxend.pid
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BUGS
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====
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Please report all bugs you discover. This should be done via either:
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#. the mailing list
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`https://libvirt.org/contact.html <https://libvirt.org/contact.html>`_
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#. the bug tracker
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`https://libvirt.org/bugs.html <https://libvirt.org/bugs.html>`_
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Alternatively, you may report bugs to your software distributor / vendor.
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AUTHORS
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=======
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Please refer to the AUTHORS file distributed with libvirt.
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COPYRIGHT
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=========
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Copyright (C) 2006-2020 Red Hat, Inc., and the authors listed in the
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libvirt AUTHORS file.
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LICENSE
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=======
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``virtxend`` is distributed under the terms of the GNU LGPL v2.1+.
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This is free software; see the source for copying conditions. There
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is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE
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SEE ALSO
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========
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virsh(1), libvirtd(8),
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`https://www.libvirt.org/daemons.html <https://www.libvirt.org/daemons.html>`_,
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`https://www.libvirt.org/drvxen.html <https://www.libvirt.org/drvxen.html>`_
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