bel="Table of Contents"><div><hr><ol><li role=none aria-label=Overview><a href=#overview>Overview</a><li role=none aria-label="Multicluster Istio setup"><a href=#multicluster-istio-setup>Multicluster Istio setup</a><li role=none aria-label="Configure Prometheus federation"><a href=#configure-prometheus-federation>Configure Prometheus federation</a><ol><li role=none aria-label="External production Prometheus"><a href=#external-production-prometheus>External production Prometheus</a><li role=none aria-label="