 or in one of the clusters.</p><p>Validate that you have an instance of Prometheus running in each cluster:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl -n istio-system get services prometheus
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE
prometheus   ClusterIP   10.8.4.109   &lt;none&gt;        9090/TCP   20h
</code></pre><h2 id=configure-prometheus-federation>Configure Prometheus federation</h2><h3 id=external-production-prometheus>External product