Unable to create cold migration ISO on VCDA 4.7.1

Products

• VMware Cloud Director

Issue/Introduction

• After you successfully enable the Cold Migration feature in VMware Cloud Director Availability (VCDA), you can't create a Cold Migration template ISO and get a timeout error.
• In /opt/vmware/h4/manager/log in the Manager appliance you can see entries similar to:

2024-06-06 08:07:56.224 ERROR [00000000-0000-0000-0000-0000000000000] [cold-migration-scheduler-2] c.v.h.c.r..ColdMigrationDiscoveryService  : Failed to refresh cold migrations from H4DM

com.vmware.exception.ConnectTimeout: Connect to 00.00.00.00:3030 [/00.00.00.00] failed: Connect timed out

• You have more than one NIC in the replicator(s)
• ens160 is not the NIC used for management address

Cause

This issue occurs because Cloud Director Availability uses the replicator's first NIC, ens160 to communicate with the manager, if ens160 is not the management endpoint for the replicator the communication is not possible

Resolution

To resolve this issue, configure the H4DM address on the Replicator appliance so it uses the same IP as the management address.

1. SSH in the Replicator Appliance and log in as root.
2. Open the application.properties file of the Replicator service:
   
   vi /opt/vmware/h4/replicator/config/application.properties
   
   
3. Modify the h4dm.address to point to the same IP as the Replicator's management address.
4. Restart the Replicator service.
5. Repair the local Manager and Replicator.