Based on VMware documentation
A system administrator can update or replace certificates for vRealize Automation components.
vRealize Automation contains three main components that use SSL certificates in order to facilitate secure communication with each other. These components are as follows:
- vRealize Automation appliance
- IaaS website component
- IaaS manager service component
To replace the certificate you need to login via root in Master Node of vRealize Automation appliance and go to the tab vRA Settings –> Certificate