nss-systemd is a plug-in module for the GNU Name Service Switch (NSS)
functionality of the GNU C Library (glibc), providing UNIX user and
group name resolution for dynamic users and groups allocated through
the DynamicUser= option in systemd unit files. See systemd.exec(5)
for details on this option.
This module also ensures that the root and nobody users and groups
(i.e. the users/groups with the UIDs/GIDs 0 and 65534) remain
resolvable at all times, even if they aren't listed in /etc/passwd or
/etc/group, or if these files are missing.
To activate the NSS module, add "systemd" to the lines starting with
"passwd:" and "group:" in /etc/nsswitch.conf.
It is recommended to place "systemd" after the "files" or "compat"
entry of the /etc/nsswitch.conf lines so that /etc/passwd and
/etc/group based mappings take precedence.
Here is an example /etc/nsswitch.conf file that enables nss-systemd
passwd: compat mymachines systemd
group: compat mymachines systemd
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
protocols: db files
services: db files
ethers: db files
rpc: db files
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2017-03-13. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
systemd 233 NSS-SYSTEMD(8)