# man > systemd.system-credentials(7) [_SYSTEMD.SYSTEM-CREDENTIALS_(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.SYSTEM-CREDENTIALS/7/markdown) systemd.system-credentials [_SYSTEMD.SYSTEM-CREDENTIALS_(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.SYSTEM-CREDENTIALS/7/markdown) ## NAME systemd.system-credentials - System Credentials ## DESCRIPTION **System and Service Credentials**[1] are data objects that may be passed into booted systems or system services as they are invoked. They can be acquired from various external sources, and propagated into the system and from there into system services. Credentials may optionally be encrypted with a machine-specific key and/or locked to the local TPM2 device, and are only decrypted when the consuming service is invoked. System credentials may be used to provision and configure various aspects of the system. Depending on the consuming component credentials are only used on initial invocations or are needed for all invocations. Credentials may be used for any kind of data, binary or text, and may carry passwords, secrets, certificates, cryptographic key material, identity information, configuration, and more. ## WELL KNOWN SYSTEM CREDENTIALS _firstboot.keymap_ The console key mapping to set (e.g. "de"). Read by [**systemd-firstboot**(1)](https://www.chedong.com/phpMan.php/man/systemd-firstboot/1/markdown), and only honoured if no console keymap has been configured before. Added in version 252. _firstboot.locale_, _firstboot.locale-messages_ The system locale to set (e.g. "de_DE.UTF-8"). Read by [**systemd-firstboot**(1)](https://www.chedong.com/phpMan.php/man/systemd-firstboot/1/markdown), and only honoured if no locale has been configured before. _firstboot.locale_ sets "LANG", while _firstboot.locale-message_ sets "LC_MESSAGES". Added in version 252. _firstboot.timezone_ The system timezone to set (e.g. "Europe/Berlin"). Read by [**systemd-firstboot**(1)](https://www.chedong.com/phpMan.php/man/systemd-firstboot/1/markdown), and only honoured if no system timezone has been configured before. Added in version 252. _login.issue_ The data of this credential is written to /etc/issue.d/50-provision.conf, if the file doesn't exist yet. [**agetty**(8)](https://www.chedong.com/phpMan.php/man/agetty/8/markdown) reads this file and shows its contents at the login prompt of terminal logins. See [**issue**(5)](https://www.chedong.com/phpMan.php/man/issue/5/markdown) for details. Consumed by /usr/lib/tmpfiles.d/provision.conf, see [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown). Added in version 252. _login.motd_ The data of this credential is written to /etc/motd.d/50-provision.conf, if the file doesn't exist yet. [**pam_motd**(8)](https://www.chedong.com/phpMan.php/man/pammotd/8/markdown) reads this file and shows its contents as "message of the day" during terminal logins. See [**motd**(5)](https://www.chedong.com/phpMan.php/man/motd/5/markdown) for details. Consumed by /usr/lib/tmpfiles.d/provision.conf, see [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown). Added in version 252. _network.hosts_ The data of this credential is written to /etc/hosts, if the file doesn't exist yet. See [**hosts**(5)](https://www.chedong.com/phpMan.php/man/hosts/5/markdown) for details. Consumed by /usr/lib/tmpfiles.d/provision.conf, see [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown). Added in version 252. _network.dns_, _network.search_domains_ DNS server information and search domains. Read by [**systemd-resolved.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-resolved.service/8/markdown). Added in version 253. _passwd.hashed-password.root_, _passwd.plaintext-password.root_ May contain the password (either in UNIX hashed format, or in plaintext) for the root users. Read by both [**systemd-firstboot**(1)](https://www.chedong.com/phpMan.php/man/systemd-firstboot/1/markdown) and [**systemd-sysusers**(1)](https://www.chedong.com/phpMan.php/man/systemd-sysusers/1/markdown), and only honoured if no root password has been configured before. Added in version 252. _passwd.shell.root_ The path to the shell program (e.g. "/bin/bash") for the root user. Read by both [**systemd-firstboot**(1)](https://www.chedong.com/phpMan.php/man/systemd-firstboot/1/markdown) and [**systemd-sysusers**(1)](https://www.chedong.com/phpMan.php/man/systemd-sysusers/1/markdown), and only honoured if no root shell has been configured before. Added in version 252. _ssh.authorized_keys.root_ The data of this credential is written to /root/.ssh/authorized_keys, if the file doesn't exist yet. This allows provisioning SSH access for the system's root user. Consumed by /usr/lib/tmpfiles.d/provision.conf, see [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown). Added in version 252. _sysusers.extra_ Additional [**sysusers.d**(5)](https://www.chedong.com/phpMan.php/man/sysusers.d/5/markdown) lines to process during boot. Added in version 252. _sysctl.extra_ Additional [**sysctl.d**(5)](https://www.chedong.com/phpMan.php/man/sysctl.d/5/markdown) lines to process during boot. Added in version 252. _tmpfiles.extra_ Additional [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown) lines to process during boot. Added in version 252. _fstab.extra_ Additional mounts to establish at boot. For details, see [**systemd-fstab-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-fstab-generator/8/markdown). Added in version 254. _vconsole.keymap_, _vconsole.keymap_toggle_, _vconsole.font_, _vconsole.font_map_, _vconsole.font_unimap_ Console settings to apply, see [**systemd-vconsole-setup.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-vconsole-setup.service/8/markdown) for details. Added in version 253. _getty.ttys.serial_, _getty.ttys.container_ Used for spawning additional login prompts, see [**systemd-getty-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-getty-generator/8/markdown) for details. Added in version 254. _vmm.notify_socket_ Configures an [**sd_notify**(3)](https://www.chedong.com/phpMan.php/man/sdnotify/3/markdown) compatible **AF_VSOCK **socket the service manager will report status information, ready notification and exit status on. For details see [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown). Added in version 253. _system.machine_id_ Takes a 128bit ID to initialize the machine ID from (if it is not set yet). Interpreted by the service manager (PID 1). For details see [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown). Added in version 254. ## SEE ALSO [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown), [**kernel-command-line**(7)](https://www.chedong.com/phpMan.php/man/kernel-command-line/7/markdown), [**smbios-type-11**(7)](https://www.chedong.com/phpMan.php/man/smbios-type-11/7/markdown) ## NOTES 1. System and Service Credentials systemd 255 [_SYSTEMD.SYSTEM-CREDENTIALS_(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.SYSTEM-CREDENTIALS/7/markdown)