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  3. systemd
  4. systemd-machine-id-setup(1)

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SYSTEMD-MACHINE-ID-SETUP(1) systemd-machine-id-setup SYSTEMD-MACHINE-ID-SETUP(1)

NAME

systemd-machine-id-setup - Initialize the machine ID in /etc/machine-id

SYNOPSIS

systemd-machine-id-setup

DESCRIPTION

systemd-machine-id-setup may be used by system installer tools to initialize the machine ID stored in /etc/machine-id at install time with a randomly generated ID. See machine-id(5) for more information about this file.

This tool will execute no operation if /etc/machine-id is already initialized.

If a valid D-Bus machine ID is already configured for the system, the D-Bus machine ID is copied and used to initialize the machine ID in /etc/machine-id.

If run inside a KVM virtual machine and a UUID is passed via the -uuid option, this UUID is used to initialize the machine ID instead of a randomly generated one. The caller must ensure that the UUID passed is sufficiently unique and is different for every booted instanced of the VM.

Similar, if run inside a Linux container environment and a UUID is set for the container this is used to initialize the machine ID. For details see the documentation of the Container Interface[1].

Use systemd-firstboot(1) to initialize the machine ID on mounted (but not booted) system images.

OPTIONS

The following options are understood:

--root=root

Takes a directory path as an argument. All paths will be prefixed with the given alternate root path, including config search paths.

-h, --help

Print a short help text and exit.

--version

Print a short version string and exit.

EXIT STATUS

On success, 0 is returned, a non-zero failure code otherwise.

SEE ALSO

systemd(1), machine-id(5), dbus-uuidgen(1), systemd-firstboot(1)

NOTES

1.
Container Interface
http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
systemd 219