Assign Private IP address to load balancer in GCP

Question

Hi I have bucket in GCP with data in it. Created a load balancer which comes with Public IP address which assigned automatically. But I am trying to find a way to assign Private IP address to the Load balancer so that my internal network (VPC) uses services from Load balancer.

I have checked with GCP Documentation, but it says IT CAN'T due to limitations in Load Balancer Service(by design).

Is there any other way to achieve this?

Answer 1

Since you would like to assign a private IP to your Load Balancer, then you can use one of the two types of Internal Cloud Load Balancing. More info can be found on the links below:

As per Google Documentation:

Internal TCP/UDP Load Balancing

Internal TCP/UDP Load Balancing enables you to load balance TCP/UDP traffic behind a private load balancing IP address that is accessible only to your internal virtual machine instances. Use Internal TCP/UDP Load Balancing to configure an Internal Load Balancing IP address to act as the frontend to your private backend instances. You use only internal IP addresses for your load balanced service.

This is the document for Setting Up Internal TCP/UDP Load Balancing.

---

As per Google Documentation:

Internal HTTP(S) Load Balancing

The internal HTTP(S) load balancer performs proxy-based load balancing of Layer 7 application data that you specify with URL maps. It uses a private IP address that acts as the frontend to your backend instances.

This is the document for Setting Up Internal HTTP(S) Load Balancing.

Answer 2

You can do this manually away from standard GCP services setting up HAPROXY on an instance on the vpc. See HAPROXY starter guide http://www.haproxy.org/#docs