systemd.system-credentials
systemd
systemd.system-credentials
7
systemd.system-credentials
System Credentials
Description
System and Service Credentials 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-firstboot1,
and only honoured if no console keymap has been configured before.
firstboot.locale
firstboot.locale-messages
The system locale to set (e.g. de_DE.UTF-8). Read by
systemd-firstboot1,
and only honoured if no locale has been configured before. firstboot.locale sets
LANG, while firstboot.locale-message sets
LC_MESSAGES.
firstboot.timezone
The system timezone to set (e.g. Europe/Berlin). Read by
systemd-firstboot1,
and only honoured if no system timezone has been configured before.
login.issue
The data of this credential is written to
/etc/issue.d/50-provision.conf, if the file doesn't exist yet.
agetty8
reads this file and shows its contents at the login prompt of terminal logins. See
issue5
for details.
Consumed by /usr/lib/tmpfiles.d/provision.conf, see
tmpfiles.d5.
login.motd
The data of this credential is written to /etc/motd.d/50-provision.conf,
if the file doesn't exist yet.
pam_motd8
reads this file and shows its contents as "message of the day" during terminal logins. See
motd5
for details.
Consumed by /usr/lib/tmpfiles.d/provision.conf, see
tmpfiles.d5.
network.hosts
The data of this credential is written to /etc/hosts, if the file
doesn't exist yet. See
hosts5
for details.
Consumed by /usr/lib/tmpfiles.d/provision.conf, see
tmpfiles.d5.
network.dns
network.search_domains
DNS server information and search domains. Read by
systemd-resolved.service8.
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-firstboot1
and
systemd-sysusers1,
and only honoured if no root password has been configured before.
passwd.shell.root
The path to the shell program (e.g. /bin/bash) for the root user. Read by
both
systemd-firstboot1
and
systemd-sysusers1,
and only honoured if no root shell has been configured before.
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.d5.
sysusers.extra
Additional
sysusers.d5
lines to process during boot.
sysctl.extra
Additional
sysctl.d5 lines
to process during boot.
tmpfiles.extra
Additional
tmpfiles.d5
lines to process during boot.
vconsole.keymap
vconsole.keymap_toggle
vconsole.font
vconsole.font_map
vconsole.font_unimap
Console settings to apply, see
systemd-vconsole-setup.service8 for details.
vmm.notify_socket
Configures an
sd_notify3
compatible AF_VSOCK socket the service manager will report status information,
ready notification and exit status on. For details see
systemd1.
See Also
systemd1,
kernel-command-line7,
smbios-type-117