# istio_destinationrule-simple-port-credentialname.yaml
apiVersion: networking.istio.io/v1
kind: DestinationRule
metadata:
  name: db-tls
spec:
  host: mydbserver.prod.svc.cluster.local
  trafficPolicy:
    portLevelSettings:
      - port:
          number: 443
        tls:
          mode: SIMPLE
          credentialName: db-credential