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NSS-SYSTEMD(8) nss-systemd NSS-SYSTEMD(8)


nss-systemd, - Provide UNIX user and group name resolution for dynamic users and groups.



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 correctly:
passwd:         compat mymachines  systemd
group:          compat mymachines  systemd
shadow:         compat
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname networks: files
protocols: db files services: db files ethers: db files rpc: db files
netgroup: nis


systemd(1), systemd.exec(5), nss-resolve(8), nss-myhostname(8), nss-mymachines(8), nsswitch.conf(5), getent(1)
systemd 239