VIRTNWFILTERD - Online Linux Manual PageSection : 8
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Note : Virtualization Support
NAMEvirtnwfilterd − libvirt network filter management daemon
SYNOPSISvirtnwfilterd [OPTION]...
DESCRIPTIONThe virtnwfilterd 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 to provide management for network filters. The virtnwfilterd daemon only listens for requests on a local Unix domain socket. Remote off−host access and backwards compatibility with legacy clients expecting libvirtd is provided by the virtproxy daemon. Restarting virtnwfilterd does not interrupt running guests. Guests continue to operate and changes in their state will generally be picked up automatically during startup. None the less it is recommended to avoid restarting with running guests whenever practical.
DAEMON STARTUP MODESThe virtnwfilterd daemon is capable of starting in two modes.
Socket activation modeOn hosts with systemd it is started in socket activation mode and it will rely on systemd to create and listen on the UNIX sockets and pass them as pre−opened file descriptors. In this mode most of the socket related config options in /etc/libvirt/virtnwfilterd.conf will no longer have any effect.
Traditional service modeOn hosts without systemd, it will create and listen on UNIX sockets itself.
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 neither any client connections nor any running domains. −v, −−verbose Enable output of verbose messages. −−version Display version information then exit.
SIGNALSOn receipt of SIGHUP virtnwfilterd will reload its configuration.
FILES
When run as root • /etc/libvirt/virtnwfilterd.conf The default configuration file used by virtnwfilterd, unless overridden on the command line using the −f | −−config option. • /run/libvirt/virtnwfilterd−sock • /run/libvirt/virtnwfilterd−sock−ro • /run/libvirt/virtnwfilterd−admin−sock The sockets virtnwfilterd will use. The TLS Server private key virtnwfilterd will use. • /run/virtnwfilterd.pid The PID file to use, unless overridden by the −p | −−pid−file option.
When run as non−root • $XDG_CONFIG_HOME/libvirt/virtnwfilterd.conf The default configuration file used by virtnwfilterd, unless overridden on the command line using the −f``|−−config`` option. • $XDG_RUNTIME_DIR/libvirt/virtnwfilterd−sock • $XDG_RUNTIME_DIR/libvirt/virtnwfilterd−admin−sock The sockets virtnwfilterd will use. • $XDG_RUNTIME_DIR/libvirt/virtnwfilterd.pid The PID file to use, unless overridden by the −p``|−−pid−file`` option. If $XDG_CONFIG_HOME is not set in your environment, virtnwfilterd will use $HOME/.config If $XDG_RUNTIME_DIR is not set in your environment, virtnwfilterd will use $HOME/.cache
EXAMPLESTo retrieve the version of virtnwfilterd: # virtnwfilterd −−version virtnwfilterd (libvirt) 9.0.0 To start virtnwfilterd, instructing it to daemonize and create a PID file: # virtnwfilterd −d # ls −la /run/virtnwfilterd.pid −rw−r−−r−− 1 root root 6 Jul 9 02:40 /run/virtnwfilterd.pid
BUGSPlease report all bugs you discover. This should be done via either: 1. the mailing list ­https://libvirt.org/contact.html 2. the bug tracker ­https://libvirt.org/bugs.html Alternatively, you may report bugs to your software distributor / vendor.
AUTHORSPlease refer to the AUTHORS file distributed with libvirt.
COPYRIGHTCopyright (C) 2006−2020 Red Hat, Inc., and the authors listed in the libvirt AUTHORS file.
LICENSEvirtnwfilterd 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 ALSOvirsh(1), libvirtd(8), ­https://www.libvirt.org/daemons.html, ­https://www.libvirt.org/drvnwfilter.html 0
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