Periodic LDAP connection issues in combination with nscd for Red Hat Enterprise Linux 5

Solution Unverified - Updated -

Issue

  • Periodic LDAP connection issues in combination with nscd
  • When user is unable to login, nscd reports the below error message in /var/log/message:
May 27 13:05:46 localhost nscd: nss_ldap: could not search LDAP server - Server is unavailable 
  • Intermittent login failures while using nscd along with nss_ldap
  • Intermittent inability for nscd service to communicate/bind to ldap server

Environment

  • Red Hat Enterprise Linux 5.4
  • Authenticating against Windows Active Directory 2003 R2 using nss_ldap and pam_krb5
  • nss_ldap
  • nscd

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