systemd-machine-id-setup − Initialize the machine ID in /etc/machine−id
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systemd−machine−id−setup |
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.
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.
On success, 0 is returned, a non−zero failure code otherwise.
systemd(1), machine-id(5), dbus-uuidgen(1), systemd-firstboot(1)
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1. |
Container Interface |
http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface