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## /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:## 'sssd' performs its own 'files'-based caching, so it should generally# come before 'files'.## 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: sss filesshadow: files sssgroup: sss fileshosts: files dns myhostnameservices: files sssnetgroup: sssautomount: files sssaliases: filesethers: filesgshadow: files# Allow initgroups to default to the setting for group.# initgroups: filesnetworks: files dnsprotocols: filespublickey: filesrpc: files