libvirtd command-line options

These are the libvirtd command-line switches operators still run into on classic deployments, compatibility wrappers, and older automation.

Listen mode

libvirtd --listen

Use --listen only when the host is intentionally exposing traditional daemon listeners. On modern systemd hosts, prefer the socket-activated listeners and proxy units instead of forcing the daemon to own the sockets itself.

Verbose logging

libvirtd --verbose

--verbose increases daemon logging detail and is mainly useful during foreground debugging or when reproducing a startup problem.

Idle timeout

libvirtd --timeout 120

--timeout lets the daemon exit after a period of inactivity. It is most relevant in compatibility scenarios where you want daemon-style behavior without leaving the process resident forever.

Custom config path

libvirtd --config /etc/libvirt/libvirtd.conf

Use --config when you need to point libvirtd at a non-default configuration file during controlled testing or staging.

Local help

libvirtd --help

Use --help for a local flag summary. It does not replace understanding whether the host should run the compatibility daemon at all.