Connector Failed to load Auth Adapters | Auth Adapters are missing from vIDM Node

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

• Directory Creation/ Sync fails with the error featured below error:
          " Connector Communication failed with Response or Invalid Suite Token"
• Login with AD user fails with below stack trace under connector.log:

  java.lang.NullPointerException
  at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
  at com.vmware.horizon.client.rest.Api.getOAuth2AccessToken(Api.java:109)
  at com.vmware.horizon.client.rest.Api.signIn(Api.java:95)
  at com.vmware.horizon.client.rest.Api.signIn(Api.java:90)

• The horizon.log my also feature the below events:

  com.vmware.horizon.connector.management.ConnectorServiceImpl - Connector Already Exists for hostname:vidm.example.com
  2020-11-24T12:13:05,862 WARN (Thread-34826) [IDM-TENANT;dbef9405-xxxx-xxxx-b262-00c275537e91;127.x.x.x;] com.vmware.horizon.common.utils.Messages - No such key connector.exists
  INFO (tomcat-http--14) [;;] com.vmware.horizon.common.api.token.SuiteToken - Suite token failed to initialize.
  WARN (tomcat-http--14) [3002@ESILAB;-;127.0.0.1] com.vmware.horizon.common.api.token.SuiteToken - SuiteToken revocation check failed. The SuiteTokenConfiguration.getRevokeCheckUrl was not set.

• Users are unable to sign in with VIDM user
• Root partition was previously full

Environment

VMware Identity Manager 3.3.x

Cause

The errors and events above are generated due to a corrupt config-states.json file.

Resolution

To resolve this issue, revert to working config-states.json file located under /usr/local/horizon/conf/states/<TENANT_NAME>/<WORKER_ID> following the article HW-134096 - VMware Identity Manager Connector may fail to communicate due to config-state.json corruption

Additional Information

Identity Manager root partition is full on one or more nodes in the cluster