Hello, I would like to clarify a question. Can you help me?

I'm deploying a solution based on Kamailio, but I need incorporate the load balancer funcionality in the environment.

See the cenario:

I have five VMs.

PCSCF, ICSCF, SCSCF, HSS, DNS. Each VM runs the especific funcionality of the IMS.

Therefore, which machines should receive the config provided by dispacher module? Is the PCSCF?

Another question:

The DNS server should be updated, I may do this previously?

The HSS, should be updated too, I may do this previously?