VIDM login error on one of the nodes "Error Incorrect issuer in SAML AuthnRequest."

Products

• VMware Aria Suite

Issue/Introduction

• VMware Indetify manager authentication fails through the primary node only post scaling up the VIDM from singe node to cluster. 
• While logging through the primary node it gives the error  "Error Incorrect issuer in SAML AuthnRequest." while redirecting to the LoadBalancer. 
• Authentication works fine through the other two nodes. 
• VIDM cluster health looks fine. 

Environment

• VMware Identity Manager 3.3.x

Cause

• This happens  when we scale out a single node VIDM to a 3 node cluster and the retrust of the cluster with the LoadBalancer is not done correctly. 

Resolution

• To resolve this we need to run a retrust of the VIDM cluster with the LoadBalancer. 
• Steps : 
  • Take a snapshot of the VIDM cluster from LCM. 
  • Run the re-trust of the VIDM cluster with the LoadBalancer. 
  • Try to login thought the Primary node and it will work.