Configure a regional Cloud Load Balancing frontend in Application Design Center

The Regional Cloud Load Balancing (Frontend) component helps you configure the public-facing elements of a load balancer. The frontend handles incoming traffic, defines routing rules, and directs requests to the appropriate backend. You can configure the following:

Target Proxy: Terminates client connections and forwards requests.
URL Map: Defines routing rules based on hostnames and URL paths.
Forwarding Rule: Assigns an IP address and port to the load balancer, making it accessible.

For more information, see Cloud Load Balancing overview .

This document describes the connections and parameters you can configure when using App Design Center to create a regional Cloud Load Balancing frontend. The configuration parameters are based on the terraform-google-regional-lb-http Terraform module.

Component connections

The following table includes the components that you can connect to a regional Cloud Load Balancing frontend, and the resulting updates to your application and its generated Terraform code.

Connected component

Application updates

Background information

Compute Engine instance template

The Compute Engine instances can redirect traffic to the regional Cloud Load Balancing frontend.
The Cloud Load Balancing address is added to the Compute Engine instance template.

Forwarding rules overview

Cloud Run

The HTTP and HTTPS IP addresses of the load balancer are available to the application running in the Cloud Run container.
The Cloud Load Balancing address metadata is added to the Cloud Run environment variables.

Forwarding rules overview

Regional Cloud Load Balancing backend (required)

The Cloud Load Balancing frontend, which handles incoming requests, is linked to the Cloud Load Balancing backend, which processes the requests.
The backend service information is added to the frontend URL map input.
Incoming traffic is served based on the host path mappings you configure in the regional Cloud Load Balancing backend URL maps.

URL maps overview

Required configuration parameters

If your template includes a regional Cloud Load Balancing frontend component, you must configure the following parameters before you deploy.

Parameter name	Description and constraints	Background information
Project ID	The project where you want to deploy the Cloud Load Balancing frontend.	Configure components
Region	region	Forwarding rules overview
Name	name	Forwarding rules overview
Network	network	Forwarding rules overview

Optional configuration parameters

The following parameters are optional. To display advanced parameters, in the Configurationarea, select Show advanced fields.

Feature

Parameter name

Description and constraint information

Background information

Subnetwork

subnetwork

Forwarding rules overview

Create Proxy Only Subnet

create_proxy_only_subnet

Proxy-only subnets for Envoy-based load balancers

Proxy Only Subnet IP

ipCidrRange

Proxy-only subnets for Envoy-based load balancers

Load Balancing Scheme

loadBalancingScheme

Summary of types of Google Cloud load balancers

Create URL Map

Automatically create a URL map. Clear the checkbox if you want to configure your own URL map in URL Map Input.

Use URL maps

URL Map Input

Host

Path

Backend Service

URL Map Resource URI

The URI for a URL map that you previously created.

urlMap

Create Address

Create a new global IPv4 address.

IP Address specifications

Address

IPAddress

IP Address specifications

Enable IPv6

Enable IPv6 address on the CDN load-balancer.

IPv6 for Application Load Balancers and proxy Network Load Balancers

Create IPv6 Address

Allocate a new IPv6 address.

IPv6 for Application Load Balancers and proxy Network Load Balancers

IPv6 Address

IPAddress

IP Address specifications

Labels

Key

labels

Organize resources using labels

Value

labels

Organize resources using labels

SSL

Enable SSL support and then do one of the following:

Enable Create SSL Certificateand enter Private Keyand Certificate.
Enter SSL Certificates.
Enter Managed SSL Certificate Domains.

SSL certificates overview

Create SSL Certificate

Create a certificate using the information you enter in Private Keyand Certificate.

SSL certificates overview

Private Key

privateKey

Step 1: Create a private key and certificate

Certificate

certificate

Step 1: Create a private key and certificate

SSL Certificates

sslCertificates[]

SSL certificates overview

Managed SSL Certificate Domains

managed.domains[]

Use Google-managed SSL certificates

Random Certificate Suffix

Select to generate random certificate names. Enable this setting if you need to change the SSL certificate.

random_certificate_suffix

HTTP Port

The port for the HTTP load balancer.

Port specifications

HTTPS Port

The port for the HTTPS load balancer.

Port specifications

HTTPS Redirect

Select to enable HTTPS redirect.

Set up an HTTP-to-HTTPS redirect for regional external Application Load Balancers

HTTP Forward

Clear to disable HTTP port 80 forwarding.

Forwarding rules overview

SSL Policy

sslPolicy

SSL policies for SSL and TLS protocols

Server TLS policy

serverTlsPolicy

Mutual TLS overview

HTTP Keep Alive Timeout Sec

httpKeepAliveTimeoutSec

Timeouts and retries

What's next

You must connect your frontend component to a backend component. To configure the backend component, see Configure a regional Cloud Load Balancing backend service in Application Design Center .