Cannot open vRealize Automation console after IP address change

Once you change the IP of the vRealise Automation Appliance you may observe an issue where although you can reach the VCAC splash page i.e. https://<hostname>/ you may not be able to reach the vRealize Automation console i.e. https://<hostname>/vcac

On the VCAC appliance:

Ssh to the appliance and modify the /etc/hosts file to reflect the server’s new IP address:

login as: root
VMware vCloud Automation Center Appliance
root@vac001's password:
vac001:~ # vi /etc/hosts

hosts file content:

 VAMI_EDIT_BEGIN
127.0.0.1 localhost
192.168.100.101 vac001
# VAMI_EDIT_END

Login to vRealize Business appliance management interface, unregister and register with VCAC again:
https://<hostname>:5480