virtnwfilterd - Man Page
libvirt network filter management daemon
Synopsis
virtnwfilterd [OPTION]...
Description
The 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 access via TLS/TCP and backwards compatibility with legacy clients expecting libvirtd is provided by the virtproxyd 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 Modes
The virtnwfilterd 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 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 mode
On 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 no client connections.
- -v, --verbose
- Enable output of verbose messages.
- --version
- Display version information then exit.
Signals
On 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
Examples
To retrieve the version of virtnwfilterd:
# virtnwfilterd --version virtnwfilterd (libvirt) 10.8.0
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
Bugs
Please report all bugs you discover. This should be done via either:
the mailing list
the bug tracker
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
virtnwfilterd 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