Chapter 11. Monitoring Data Grid with Prometheus

Data Grid exposes a metrics endpoint that provides statistics and events to Prometheus.

11.1. Creating a Prometheus Service Monitor
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Define a service monitor instances that configures Prometheus to monitor your Data Grid cluster.

Prerequisites

Procedure

Create an authentication secret that contains Data Grid credentials so that Prometheus can authenticate with your Data Grid cluster.
```
apiVersion: v1
stringData:
  username: developer 
```
1
```
  password: dIRs5cAAsHIeeRIL 
```
2
```
kind: Secret
metadata:
  name: basic-auth
type: Opaque
```
1
Specifies an application user. developer is the default.
2
Specifies the corresponding password.
Add the authentication secret to your Prometheus namespace.
```
$ oc apply -f basic-auth.yaml
```

Create a service monitor that configures Prometheus to monitor your Data Grid cluster.

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  labels:
    k8s-app: prometheus
  name: datagrid-monitoring


  namespace: infinispan-monitoring


spec:
  endpoints:
    - targetPort: 11222


      path: /metrics


      honorLabels: true
      basicAuth:
        username:
          key: username
          name: basic-auth


        password:
          key: password
          name: basic-auth
      interval: 30s
      scrapeTimeout: 10s
      scheme: https


      tlsConfig:
        insecureSkipVerify: true
        serverName: example-infinispan


  namespaceSelector:
    matchNames:
      - infinispan


  selector:
    matchLabels:
      app: infinispan-service
      clusterName: example-infinispan

1: Names the service monitor instances.
2: Specifies the namespace of your Prometheus stack.
3: Sets the port of 11222 for the Data Grid metrics endpoint.
4: Sets the path where Data Grid exposes metrics.
5: Specifies the authentication secret with Data Grid credentials.
6: Specifies that Data Grid clusters use endpoint encryption.
7: Specifies the Common Name (CN) of the TLS certificate for Data Grid encryption. If you use an OpenShift service certificate, the CN matches the metadata.name resource for your Data Grid cluster.
8: Specifies the namespace of your Data Grid cluster.
9: Specifies the name of your Data Grid cluster.

Add the service monitor instance to your Prometheus namespace.
```
$ oc apply -f service-monitor.yaml
```