Login to VMware Aria Operations for Logs fails with the error "Error authenticating user"

Products

• VCF Operations

Issue/Introduction

• Login to VMware Aria Operations for Logs with local admin and VIDM user fails with the error "Error authenticating user"
• SDDC manager reports the local admin account for VMware Aria Operations for Logs as disconnected
• Error in /storage/core/loginsight/var/ui_runtime.log shows errors similar to 

  2026-02-18 07:44:26.137+0000] ["application-akka.actor.default-dispatcher-186"/xxx.xxx.xxx.xxx INFO] [com.vmware.loginsight.aaa.krb5.ActiveDirectoryQueryHelper] [Succeeded in connecting to LDAP server <ldapserver>:636 for domain 'domainname' via protocol LDAPS from cache in 32ms]
  [2026-02-18 07:44:26.137+0000] ["application-akka.actor.default-dispatcher-186"/xxx.xxx.xxx.xxx ERROR] [play.core.server.netty.PlayRequestHandler] [Cannot invoke the action]
  java.util.concurrent.CompletionException: com.datastax.oss.driver.api.core.NoNodeAvailableException: No node was available to execute the query
   at java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source) ~[?:?]
   at java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source) ~[?:?]

• Open ssh to VMware Aria Operations for Logs and running df -h shows root partition is full

Environment

VMware Aria Operations for Logs 8.18.x

Cause

Root partition is full preventing user login

Resolution

Note: Please take snapshot of all VMware Aria Operations for Logs nodes prior to applying below steps.  Please refer to KB for recommended steps to take snapshot How to take a Snapshot of VMware Aria Operations for Logs.

1. Apply KB The Aria Operations for Logs root partition is full 
2. Restart VMware Aria Operations for Logs nodes from vCenter