Why are ldap group lookups are being done even for local users in Red Hat Enterprise Linux ?

Solution Verified - Updated -


  • In RHEL, ldap group lookups are being done even for local users causing authentication failures for local users.
  • On a system configured to do group lookups (in /etc/nsswitch.conf) to a ldap server, ldap group lookups are done even for local users. This causes login failures for local users when connectivity to a ldap server goes down.
  • Local users are not able to authenticate / login on system if nsswitch is configured to contact ldap server for group lookups.
  • Local user account are being ignored when LDAP is down/unavailable.
  • When authenticating with a local user, how to prevent it from searching ldap backend


  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content