21_Setup_kubernetes_cluster.sh

export PROJECT_NAME=<PROJECT_NAME>
export CLUSTER_NAME=istio-ssl-demo
export COMPUTE_REGION=us-central1
export COMPUTE_ZONE=us-central1-c
export NUM_NODES=3
export MAX_NODES=6
export MIN_NODES=0
export MACHINE_TYPE=n1-standard-2
export KUBERNETES_VERSION=1.16.8-gke.15
export NETWORK=<NETWORK_NAME>
export SUBNETWORK=<SUBNETWORK_NAME>

gcloud container - project ${PROJECT_NAME} clusters create ${CLUSTER_NAME} \
 - zone ${COMPUTE_ZONE} \
 - cluster-version ${KUBERNETES_VERSION} \
 - machine-type ${MACHINE_TYPE} \
 - num-nodes ${NUM_NODES} \
 - enable-autoscaling \
 - max-nodes=${MAX_NODES} \
 - min-nodes=${MIN_NODES} \
# If you use Shared VPC architecture to bind together multiple projects, we need to specify these options
 - network "projects/${PROJECT_NAME}/global/networks/${NETWORK}" \
 - subnetwork "projects/${PROJECT_NAME}/regions/${COMPUTE_REGION}/subnetworks/${SUBNETWORK}"