Deploying VRSLCM from SDDC fails with error IP X.X.X.X is already in use.

Products

• VMware Cloud Foundation

Issue/Introduction

Symptoms:
Trying to deploy VRSLCM over AVN X-region network from SDDC fails with error VRSLCM IP X.X.X.X is already in use although the VRSLCM IP used is free and not taken. 

Cause

• The issue arises when the SDDC manager is unable to ping the gateway of the AVN X-region network. This can occur due to customer security policies/firewall that restrict the management subnet to ping the default gateway of AVN network.
• /var/log/vmware/vcf/domainmanager/domainmanager.log will show that the SDDC manager is unable to ping the AVN network gateway.

Resolution

For VCF 3.X

1. Take a snapshot from the SDDC manager VM.
2. SSH to SDDC Manager and enable the root user.
3. Open /opt/vmware/vcf/domainmanager/config/application-prod.properties and add
   • vrealize.strict.validations=false
4. Save and exit.
5. Restart DM service using the command below.
   • systemctl restart domainmanager
6. Wait the service to boot, you need to wait until the curl localhost/domainmanager/about start to return json info.
7. Retry the VRSLCM deployment.

For VCF 4.X

1. Take a snapshot from the SDDC manager VM.
2. SSH to SDDC Manager and enable the root user.
3. Open /etc/vmware/vcf/domainmanager/application-prod.properties and add
   • vrealize.strict.validations=false
4. Save and exit.
5. Restart DM service using the command below.
   • systemctl restart domainmanager
6. Wait the service to boot, you need to wait until the curl localhost/domainmanager/about start to return json info.
7. Retry the VRSLCM deployment

Additional Information

Impact/Risks:
This halts the deployment of VRSLCM in SDDC environment.