ode>cluster2</code>), but for simplicity we&rsquo;ll
just define all three subsets in both clusters, since there&rsquo;s nothing wrong with defining subsets
for versions that are not actually deployed.</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply --context=$CTX_CLUSTER1 -f - &lt;&lt;EOF
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: reviews
spec:
  host: reviews.default.svc.cluster.local
  trafficPolicy:
    tls:
      mode: ISTIO_