I figured it out, this is how it works: -- host all all 0.0.0.0/0 ldap ldapserver=server1.com ldapserver=server2.com ldapprefix=PROD01\ So documentation need some update. Regards, Virendra -----Original Message----- From: Alvaro Herrera [mailto:alvherre@xxxxxxxxxxxxxxx] Sent: Thursday, December 20, 2018 3:25 PM To: Kumar, Virendra Cc: pgsql-general@xxxxxxxxxxxxxxxxxxxx Subject: Re: Multiple LDAP Servers for ldap Authentication On 2018-Dec-20, Kumar, Virendra wrote: > Comman separated doesn't work as well. Please separate by a comma and a space, not just a comma. My reading of the OpenLDAP source code, and some quick experiments comparing failure patterns, suggest that that exact combination may work. (OpenLDAP is not exactly well commented.) I think one problem you may or may not hit is the PostgreSQL authentication timeout expiring sooner than OpenLDAP is willing to try the second server. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services ________________________________ This message is intended only for the use of the addressee and may contain information that is PRIVILEGED AND CONFIDENTIAL. If you are not the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify the sender immediately. Thank you.