For implementations with internal vCenter, even when the customer define a DNS server on build, all service VMs and nodes will point to vCenter as a DNS server.
Follow below procedure to modify forwarder DNS server on vCenter
1. SSH login the VMware vCenter Server Appliance, switch to root
2. Run this command to stop the internal DNS server.
# /etc/init.d/vmware-dnsmasq stop
3. Open the /etc/dnsmasq.conf file using a text editor.
4. Add or modify the server entry with the new DNS address.
For example: server=new-dns-addr where new-dns-addr is the new DNS address.
Note: If multiple DNS servers need to be specified, each server must be listed on a separate line.
5. Run this command to start the internal DNS server:
# /etc/init.d/vmware-dnsmasq start
6. Repeat above steps 2 to steps 4 on VMware Platform Services Controller