No data in Grafana after installing HiveMQ Kubernetes Operator with monitoring

No data is displayed in the Grafana “HiveMQ Cluster” Dashboard, after installing the hivemq-operator with monitoring.dedicated=true:

where:

• ${hivemqRelease} is your release name for the hivemq deployment;

• ${namespace} is the namespace you want to install the hivemq-operator.

It might happen because Prometheus is missing Service Monitor – a custom resource defining from where to scrape the data.

1. Prepare a manifest definition for the Service Monitor, monitorService.yaml:

   apiVersion: monitoring.coreos.com/v1 kind: ServiceMonitor metadata: labels: hivemq-cluster: ${hivemqRelease} release: ${monitoringRelease} name: hivemq spec: endpoints: - port: metrics jobLabel: hivemq selector: matchLabels: hivemq-cluster: ${hivemqRelease} app: hivemq

   Do substitute ${hivemqRelease} with the actual name you gave to the hivemq-operator deployment.
   labels here do command the Prometheus to take the ServiceMonitor into account.
   selector here specifies which pods to scrape the data from.
   port here specifies the name of the port to which the metrics are exposed.

2. Apply the manifest

   kubectl apply -f monitorService.yaml --namespace ${namespace}

3. When all hivemq-pods are running and all their containers are ready, go to the Grafana and check if the data is updating in the “HiveMQ Cluster” dashboard.