Unable to execute test connection to LDAP server via Aria Operations

Products

• VCF Operations

Issue/Introduction

• Unable to authentify with ldap account
• If you launch a test from ldap configuration, this error message  appear: "Test unsuccessful for ldap: ldap.xxxxx.xxxx.x. Host Unreachable. Reason: UnknownHostException"
• When running nslookup <LDAP Server FQDN/IP> from one of the Aria Operations node, you are getting something similar to the following:

;; communications error to xx.xxx.xx.10#53: invalid protocol
;; communications error to xx.xxx.xx.10#53: invalid protocol
;; communications error to xx.xxx.xx.10#53: invalid protocol
;; communications error to xx.xxx.xx.11#53: host unreachable
;; no servers could be reached

Environment

VMware Aria Operations 8.18.5

Cause

The most likely cause is the DNS settings not properly configured to allow resolution for the LDAP server.

Resolution

You will need to verify and resolve your DNS settings to allow correct resolution for the LDAP server FQDN and IP address.

You must be able to forward and reverse lookup the IP and FQDN for the LDAP server.