After changing the NSX Manager node certificates and Intelligence node certificate, you experience these symptoms:
VMware vDefend Firewall
This issue occurs when using NSX-T Intelligence 1.2.0, currently, the IP, thumbprint, and node certificate of the NSX Manager appliance that deploys NSX Intelligence gets saved on the NSX Intelligence appliance. If this NSX Manager appliance is deleted, or its IP address is changed or its node certificate is changed, the info needs to be updated on the NSX Intelligence by calling certain CLI commands. Otherwise, the NSX Intelligence appliance will not be able to complete certain actions after installing or upgrading to version 1.2.0.
To resolve this issue, update the IP address, certificate and thumbprint of the NSX Intelligence appliance.
For example, as part of deployment, the NSX Intelligence appliance is deployed and registered with NSX Manager (IP: 10.10.0.10, thumbprint: old_t, node certificate: old_c).
If this NSX Manager appliance is deleted or its IP/node certificate changed, you need to update the NSX Intelligence appliance with the new or changed NSX Manager appliance information.