LDAP Configuration of NSX manager fails with error "The Hostname Of the LDAP Server Could Not Be Resolved"

Products

• VMware NSX

Issue/Introduction

• The Connection Status of LDAP server at User Management > Authentication Providers > LDAP  shows "Failed".
• When you scroll over the mouse on it, you'd see an error message - "The hostname of the LDAP server could not be resolved"
  

• Below logs will be logged in /var/log/proxy/reverse-proxy.log
yyyy-mm-ddThh:mm:ss.zzz [NSX-Manager-FQDN] NSX ### SYSTEM [nsx@6876 comp="nsx-manager" level="WARNING" subcomp="manager"] An error occurred while searching LDAP Identity Source [LDAP server DNS Name]

 

Environment

VMware NSX

Cause

The issue is caused by the NSX Manager being unable to resolve the LDAP server’s DNS name to its IP address.

Resolution

• To resolve the issue, verify that the LDAP server’s DNS name is correctly mapped to its IP address on the DNS server.
• As a workaround, edit the host file (/etc/hosts) on the NSX Manager to manually map the LDAP server’s DNS name to its IP address.