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|
==========
virtproxyd
==========
--------------------
libvirt proxy daemon
--------------------
:Manual section: 8
:Manual group: Virtualization Support
.. contents::
SYNOPSIS
========
``virtproxyd`` [*OPTION*]...
DESCRIPTION
===========
The ``virtproxyd`` program is a server side daemon component of the libvirt
virtualization management system.
It is one of a collection of modular daemons that replace functionality
previously provided by the monolithic ``libvirtd`` daemon.
This daemon runs on virtualization hosts and
* Listens on a UNIX socket to provide backwards compatibility for clients
that previously connected to the ``libvirtd`` socket.
* Optionally listens on TCP ports for connections from off-node clients
Upon receiving RPC messages from a client ``virtproxyd`` will transparently
forward them on to the appropriate modular daemon, and similarly relay back
any asynchronous events.
By default, the ``virtproxyd`` daemon listens for requests on a local Unix
domain socket with the same path previously used by ``libvirtd``. The
configuration file can be used to instruct it to also listen on TCP socket(s).
Systemd socket activation is also supported to allow it to receive pre-opened
listener sockets on startup.
Since ``virtproxyd`` merely forwards RPC messages, it has no important state,
and can be restarted at any time. Clients should expect to reconnect after
the restart.
DAEMON STARTUP MODES
====================
The ``virtproxyd`` daemon is capable of starting in two modes.
Socket activation mode
----------------------
On hosts with systemd it is started in socket activation mode and it will rely
on systemd to create and listen on the UNIX, and optionally TCP/IP, sockets and
pass them as pre-opened file descriptors. In this mode most of the socket
related config options in ``/etc/libvirt/virtproxyd.conf`` will no longer have
any effect. To enable TCP or TLS sockets use either
::
$ systemctl start virtproxyd-tls.socket
Or
::
$ systemctl start virtproxyd-tcp.socket
**Note**: The TCP socket uses plain unencrypted TCP connection and thus is
insecure and should not be used.
Traditional service mode
------------------------
On hosts without systemd, it will create and listen on UNIX sockets itself.
It will also listen on TCP/IP socket(s), according to the ``listen_tcp``
and ``listen_tls`` options in ``/etc/libvirt/virtproxyd.conf``
OPTIONS
=======
``-h``, ``--help``
Display command line help usage then exit.
``-d``, ``--daemon``
Run as a daemon & write PID file.
``-f``, ``--config *FILE*``
Use this configuration file, overriding the default value.
``-p``, ``--pid-file *FILE*``
Use this name for the PID file, overriding the default value.
``-t``, ``--timeout *SECONDS*``
Exit after timeout period (in seconds), provided there are no client
connections.
``-v``, ``--verbose``
Enable output of verbose messages.
``--version``
Display version information then exit.
SIGNALS
=======
On receipt of ``SIGHUP`` ``virtproxyd`` will reload its configuration.
FILES
=====
When run as *root*
------------------
* ``@SYSCONFDIR@/libvirt/virtproxyd.conf``
The default configuration file used by ``virtproxyd``, unless overridden on the
command line using the ``-f`` | ``--config`` option.
* ``@RUNSTATEDIR@/libvirt/libvirt-sock``
* ``@RUNSTATEDIR@/libvirt/libvirt-sock-ro``
The sockets ``virtproxyd`` will use.
* ``@SYSCONFDIR@/pki/CA/cacert.pem``
The TLS **Certificate Authority** certificate ``virtproxyd`` will use.
* ``@SYSCONFDIR@/pki/libvirt/servercert.pem``
The TLS **Server** certificate ``virtproxyd`` will use.
* ``@SYSCONFDIR@/pki/libvirt/private/serverkey.pem``
The TLS **Server** private key ``virtproxyd`` will use.
* ``@RUNSTATEDIR@/virtproxyd.pid``
The PID file to use, unless overridden by the ``-p`` | ``--pid-file`` option.
When run as *non-root*
----------------------
* ``$XDG_CONFIG_HOME/libvirt/virtproxyd.conf``
The default configuration file used by ``virtproxyd``, unless overridden on the
command line using the ``-f``|``--config`` option.
* ``$XDG_RUNTIME_DIR/libvirt/libvirt-sock``
The socket ``virtproxyd`` will use.
* ``$HOME/.pki/libvirt/cacert.pem``
The TLS **Certificate Authority** certificate ``virtproxyd`` will use.
* ``$HOME/.pki/libvirt/servercert.pem``
The TLS **Server** certificate ``virtproxyd`` will use.
* ``$HOME/.pki/libvirt/serverkey.pem``
The TLS **Server** private key ``virtproxyd`` will use.
* ``$XDG_RUNTIME_DIR/libvirt/virtproxyd.pid``
The PID file to use, unless overridden by the ``-p``|``--pid-file`` option.
If ``$XDG_CONFIG_HOME`` is not set in your environment, ``virtproxyd`` will use
``$HOME/.config``
If ``$XDG_RUNTIME_DIR`` is not set in your environment, ``virtproxyd`` will use
``$HOME/.cache``
EXAMPLES
========
To retrieve the version of ``virtproxyd``:
::
# virtproxyd --version
virtproxyd (libvirt) @VERSION@
To start ``virtproxyd``, instructing it to daemonize and create a PID file:
::
# virtproxyd -d
# ls -la @RUNSTATEDIR@/virtproxyd.pid
-rw-r--r-- 1 root root 6 Jul 9 02:40 @RUNSTATEDIR@/virtproxyd.pid
BUGS
====
Please report all bugs you discover. This should be done via either:
#. the mailing list
`https://libvirt.org/contact.html <https://libvirt.org/contact.html>`_
#. the bug tracker
`https://libvirt.org/bugs.html <https://libvirt.org/bugs.html>`_
Alternatively, you may report bugs to your software distributor / vendor.
AUTHORS
=======
Please refer to the AUTHORS file distributed with libvirt.
COPYRIGHT
=========
Copyright (C) 2006-2020 Red Hat, Inc., and the authors listed in the
libvirt AUTHORS file.
LICENSE
=======
``virtproxyd`` is distributed under the terms of the GNU LGPL v2.1+.
This is free software; see the source for copying conditions. There
is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE
SEE ALSO
========
virsh(1), libvirtd(8),
`https://libvirt.org/daemons.html <https://libvirt.org/daemons.html>`_,
|
