✏ EDIT: nsswitch.conf

#
# /etc/nsswitch.conf
#
# Name Service Switch config file. This file should be
# sorted with the most-used services at the beginning.
#
# Valid databases are: aliases, ethers, group, gshadow, hosts,
# initgroups, netgroup, networks, passwd, protocols, publickey,
# rpc, services, and shadow.
#
# Valid service provider entries include (in alphabetical order):
#
#	compat			Use /etc files plus *_compat pseudo-db
#	db			Use the pre-processed /var/db files
#	dns			Use DNS (Domain Name Service)
#	files			Use the local files in /etc
#	hesiod			Use Hesiod (DNS) for user lookups
#	nis			Use NIS (NIS version 2), also called YP
#	nisplus			Use NIS+ (NIS version 3)
#
# See `info libc 'NSS Basics'` for more information.
#
# Commonly used alternative service providers (may need installation):
#
#	ldap			Use LDAP directory server
#	myhostname		Use systemd host names
#	mymachines		Use systemd machine names
#	mdns*, mdns*_minimal	Use Avahi mDNS/DNS-SD
#	resolve			Use systemd resolved resolver
#	sss			Use System Security Services Daemon (sssd)
#	systemd			Use systemd for dynamic user option
#	winbind			Use Samba winbind support
#	wins			Use Samba wins support
#	wrapper			Use wrapper module for testing
#
# Notes:
#
#
# WARNING: Running nscd with a secondary caching service like sssd may
# 	   lead to unexpected behaviour, especially with how long
# 	   entries are cached.
#
# Installation instructions:
#
# To use 'db', install the appropriate package(s) (provide 'makedb' and
# libnss_db.so.*), and place the 'db' in front of 'files' for entries
# you want to be looked up first in the databases, like this:
#
# passwd:    db files
# shadow:    db files
# group:     db files

# In order of likelihood of use to accelerate lookup.
passwd:      files sss systemd
shadow:     files sss
group:       files sss systemd
hosts:      files dns myhostname
services:   files sss
netgroup:   sss
automount:  files sss

aliases:    files
ethers:     files
gshadow:    files
# Allow initgroups to default to the setting for group.
# initgroups: files
networks:   files dns
protocols:  files
publickey:  files
rpc:        files

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