`systemd-machine-id-setup` ( 1 )

инициализировать идентификатор машины в / etc / machine-id (Initialize the machine ID in /etc/machine-id)

Имя (Name)

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

Синопсис (Synopsis)

systemd-machine-id-setup

Описание (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 provisioned or randomly generated ID. See machine-id(5) for more information about this file.

If the tool is invoked without the --commit switch, /etc/machine-id is initialized with a valid, new machined ID if it is missing or empty. The new machine ID will be acquired in the following fashion:

1. 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.

2. If run inside a KVM virtual machine and a UUID is configured (via the -uuid option), this UUID is used to initialize the machine ID. The caller must ensure that the UUID passed is sufficiently unique and is different for every booted instance of the VM.

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

4. Otherwise, a new ID is randomly generated.

The --commit switch may be used to commit a transient machined ID to disk, making it persistent. For details, see below.

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

Параметры (Options)

The following options are understood:

       --root=path
           Takes a directory path as argument. All paths operated on
           will be prefixed with the given alternate root path,
           including the path for /etc/machine-id itself.

       --image=path
           Takes a path to a device node or regular file as argument.
           This is similar to --root= as described above, but operates
           on a disk image instead of a directory tree.

       --commit
           Commit a transient machine ID to disk. This command may be
           used to convert a transient machine ID into a persistent one.
           A transient machine ID file is one that was bind mounted from
           a memory file system (usually "tmpfs") to /etc/machine-id
           during the early phase of the boot process. This may happen
           because /etc/ is initially read-only and was missing a valid
           machine ID file at that point.

           This command will execute no operation if /etc/machine-id is
           not mounted from a memory file system, or if /etc/ is
           read-only. The command will write the current transient
           machine ID to disk and unmount the /etc/machine-id mount
           point in a race-free manner to ensure that this file is
           always valid and accessible for other processes.

           This command is primarily used by the
           systemd-machine-id-commit.service(8) early boot service.

       --print
           Print the machine ID generated or committed after the
           operation is complete.

       -h, --help
           Print a short help text and exit.

       --version
           Print a short version string and exit.

Статус выхода (Exit)

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

Смотри также (See also)

systemd(1), machine-id(5), systemd-machine-id-commit.service(8), dbus-uuidgen(1), systemd-firstboot(1)

Примечание (Note)

1. Container Interface https://systemd.io/CONTAINER_INTERFACE

Исходный текст на man7.org

systemd-machine-id-setup ( 1 )