Missing Istio metrics

Hello people,

I’m facing one strange issue. I’ve two K8S clusters, wherein Istio 1.4.10 is running.

On one K8S cluster, I could see Kiali showing traffic for all namespaces. And I could see prometheus metrics for something like istio_requests_total{destination_workload_namespace=~"myorg.*"} .
But on another K8S cluster, Kiali is showing traffic for istio-system namespace only. And same goes with prometheus metrics mentioned above, it’s coming only for istio-system namespace.

On both clusters, prometheus I’m using is our own prometheus.

Any help would be greatly appreciated. Thanks in advance.

Cheers,

  • Ajit