Kubernetes Engine Multi Cluster Load Balancing

This example shows how to do multi-region ingress using an L7 HTTP Load Balancer with regional clusters.

Figure 1. diagram of Google Cloud resources

Change to the example directory

[[ `basename $PWD` != example-gke-k8s-multi-region ]] && cd example-gke-k8s-multi-region

Install Terraform

1. Install Terraform if it is not already installed (visit terraform.io for other distributions):

../terraform-install.sh

Set up the environment

1. Set the project, replace YOUR_PROJECT with your project ID:

PROJECT=YOUR_PROJECT

gcloud config set project ${PROJECT}

2. Configure the environment for Terraform:

[[ $CLOUD_SHELL ]] || gcloud auth application-default login
export GOOGLE_PROJECT=$(gcloud config get-value project)

Run Terraform

terraform init
terraform apply

Testing

1. Wait for the load balancer to be provisioned:

./test.sh

2. Open the address of the load balancer:

echo http://$(terraform output load-balancer-ip)

Cleanup

1. Delete resources created by terraform:

terraform destroy