How DBus calculates machine id? (/etc/machine-id, /var/lib/dbus/machine-id).
Which way is more correct to determine it?
How dbus calculates machine id
d-bus
Related Solutions
The d-bus debug utility d-feet which is available as a package in many systems seems to be able to find the process id and command providing a service. For example, I ran it on a Fedora 23 xfce4 X11 systemd platform and selected Session Bus and entered the service name org.freedesktop.Notifications. It introspected the service, activating it, and showed the pid and /usr/lib64/xfce4/notifyd/xfce4-notifyd command:
Best Answer
The machine ID in
/etc/machine-idis usually randomly generated at system install bysystemd-machine-id-setup. On stateless systems it can also be generated at system boot. The format of the file originates from/var/lib/dbus/machine-idintroduced by D-Bus.The
/var/lib/dbus/machine-idfile is randomly generated bydbus-uuidgen, typically invoked by the post-install script of a D-Bus package. It can also be a symlink to/etc/machine-id.