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5729d94917
Signed-off-by: Tim Wiederhake <twiederh@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> Signed-off-by: Ján Tomko <jtomko@redhat.com>
257 lines
6.0 KiB
ReStructuredText
257 lines
6.0 KiB
ReStructuredText
==========
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virtproxyd
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==========
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--------------------
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libvirt proxy 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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``virtproxyd`` [*OPTION*]...
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DESCRIPTION
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===========
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The ``virtproxyd`` 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 and
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* Listens on a UNIX socket to provide backwards compatibility for clients
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that previously connected to the ``libvirtd`` socket.
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* Optionally listens on TCP ports for connections from off-node clients
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Upon receiving RPC messages from a client ``virtproxyd`` will transparently
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forward them on to the appropriate modular daemon, and similarly relay back
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any asynchronous events.
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By default, the ``virtproxyd`` daemon listens for requests on a local Unix
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domain socket with the same path previously used by ``libvirtd``. The
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configuration file can be used to instruct it to also listen on TCP socket(s).
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Systemd socket activation is also supported to allow it to receive pre-opened
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listener sockets on startup.
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Since ``virtproxyd`` merely forwards RPC messages, it has no important state,
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and can be restarted at any time. Clients should expect to reconnect after
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the restart.
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SYSTEM SOCKET ACTIVATION
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========================
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The ``virtproxyd`` 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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It will also listen on TCP/IP socket(s), according to the ``listen_tcp``
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and ``listen_tls`` options in ``/etc/libvirt/virtproxyd.conf``
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In socket activation mode, it will rely on systemd to create and listen
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on the UNIX, and optionally TCP/IP, sockets and pass them as pre-opened
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file descriptors. In this mode most of the socket related config options in
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``/etc/libvirt/virtproxyd.conf`` will no longer have any effect. To enable
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TCP or TLS sockets use either
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::
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$ systemctl start virtproxyd-tls.socket
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Or
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::
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$ systemctl start virtproxyd-tcp.socket
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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 virtproxyd.socket virtproxyd-ro.socket \
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virtproxyd-admin.socket virtproxyd-tls.socket virtproxyd-tcp.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`` ``virtproxyd`` will reload its configuration.
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FILES
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=====
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When run as *root*
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------------------
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* ``@SYSCONFDIR@/libvirt/virtproxyd.conf``
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The default configuration file used by ``virtproxyd``, unless overridden on the
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command line using the ``-f`` | ``--config`` option.
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* ``@RUNSTATEDIR@/libvirt/libvirt-sock``
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* ``@RUNSTATEDIR@/libvirt/libvirt-sock-ro``
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The sockets ``virtproxyd`` will use.
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* ``@SYSCONFDIR@/pki/CA/cacert.pem``
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The TLS **Certificate Authority** certificate ``virtproxyd`` will use.
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* ``@SYSCONFDIR@/pki/libvirt/servercert.pem``
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The TLS **Server** certificate ``virtproxyd`` will use.
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* ``@SYSCONFDIR@/pki/libvirt/private/serverkey.pem``
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The TLS **Server** private key ``virtproxyd`` will use.
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* ``@RUNSTATEDIR@/virtproxyd.pid``
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The PID file to use, unless overridden by the ``-p`` | ``--pid-file`` option.
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When run as *non-root*
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----------------------
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* ``$XDG_CONFIG_HOME/libvirt/virtproxyd.conf``
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The default configuration file used by ``virtproxyd``, unless overridden on the
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command line using the ``-f``|``--config`` option.
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* ``$XDG_RUNTIME_DIR/libvirt/libvirt-sock``
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The socket ``virtproxyd`` will use.
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* ``$HOME/.pki/libvirt/cacert.pem``
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The TLS **Certificate Authority** certificate ``virtproxyd`` will use.
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* ``$HOME/.pki/libvirt/servercert.pem``
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The TLS **Server** certificate ``virtproxyd`` will use.
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* ``$HOME/.pki/libvirt/serverkey.pem``
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The TLS **Server** private key ``virtproxyd`` will use.
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* ``$XDG_RUNTIME_DIR/libvirt/virtproxyd.pid``
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The PID file to use, unless overridden by the ``-p``|``--pid-file`` option.
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If ``$XDG_CONFIG_HOME`` is not set in your environment, ``virtproxyd`` will use
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``$HOME/.config``
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If ``$XDG_RUNTIME_DIR`` is not set in your environment, ``virtproxyd`` will use
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``$HOME/.cache``
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EXAMPLES
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========
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To retrieve the version of ``virtproxyd``:
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::
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# virtproxyd --version
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virtproxyd (libvirt) @VERSION@
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To start ``virtproxyd``, instructing it to daemonize and create a PID file:
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::
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# virtproxyd -d
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# ls -la @RUNSTATEDIR@/virtproxyd.pid
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-rw-r--r-- 1 root root 6 Jul 9 02:40 @RUNSTATEDIR@/virtproxyd.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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``virtproxyd`` 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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