><div id=toc><ol><li role=none aria-label="Before you begin"><a href=#before-you-begin>Before you begin</a><li role=none aria-label="Create the GKE clusters"><a href=#create-the-gke-clusters>Create the GKE clusters</a><li role=none aria-label="Create a Google Cloud firewall rule"><a href=#create-a-google-cloud-firewall-rule>Create a Google Cloud firewall rule</a><li role=none aria-label="Install the Istio control plane"><a href=#install-the-istio-control-plane>Install the Istio control plane</a><li role=non