Try out an exporter metrics:
{{- if contains "NodePort" .Values.service.type }}
  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "sidekiq-prometheus-exporter.fullname" . }})
  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
  echo "Run the following command: curl http://$NODE_IP:$NODE_PORT/metrics"
{{- else if contains "LoadBalancer" .Values.service.type }}
     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "sidekiq-prometheus-exporter.fullname" . }}'
  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "sidekiq-prometheus-exporter.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
  echo "Run the following command: curl http://$SERVICE_IP:{{ .Values.service.port }}/metrics"
{{- else if contains "ClusterIP" .Values.service.type }}
  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "sidekiq-prometheus-exporter.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
  kubectl port-forward $POD_NAME 9292:{{ .Values.containerPort  }}
  echo "Run the following command: curl http://127.0.0.1:9292/metrics"
{{- end }}