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06-grafana.md

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Setting up Grafana

Install Grafana using a Helm chart with the customized values.yaml file.

Deploy the PV and PVC YAML file.

kubectl apply -f grafana/persistence.yaml

Create the Grafana administrative credentials.

kubectl --namespace monitoring create secret generic grafana-secret --from-literal=username=admin --from-literal=password=12345678

Install the Grafana chart. In this sample we will use Helm chart version 6.38.6.

helm repo add grafana https://grafana.github.io/helm-charts --force-update
helm install --wait --name grafana --namespace monitoring --values grafana/values.yaml --version 6.38.6 grafana/grafana

Verification

Wait until the Grafana pod is running.

kubectl -n monitoring get pod -l app=grafana

output

NAME                       READY   STATUS    RESTARTS   AGE
grafana-7bc95b7545-dz8dg   1/1     Running   0          26h

Check the Grafana sevices.

kubectl -n monitoring get svc -l app=grafana

output

NAME      TYPE       CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
grafana   NodePort   10.105.155.5   <none>        80:31000/TCP   26h

Now you can access the Grafana web UI in your browser at http://<HostIP:31000> with the user name and password, admin:12345678.

Creating a Data Source and Dashboard

Using the Grafana web UI

Refer to the Grafana docs:

To create a Prometheus data source:

  • From the Grafana menu, select Configuration -> Data Sources, then click Add Data Source.
  • On the Choose data source type page, click Prometheus.
  • Use the following values to add the Prometheus data source: 
    Name: Prometheus
Default: true
URL: http://prometheus-server:80
  • Click Save & Test.

Now the Prometheus data source is created.

To import the WebLogic dashboard:

  • From the Grafana menu, select Dashboards -> Manage, then click Import.
  • On the Import page, click Upload .json File, then select the WebLogic dashboard file to import.

Using the Grafana REST API

Alternatively, you can create the data source and dashboard using the Grafana REST API.
Create the Prometheus data source with the predefined JSON file.

curl -v -H 'Content-Type: application/json' -H "Content-Type: application/json" \
  -X POST http://admin:12345678@$HOSTNAME:31000/api/datasources/ \
  --data-binary @grafana/datasource.json

Create the WebLogic dashboard with the predefined JSON file.

curl -v -H 'Content-Type: application/json' -H "Content-Type: application/json" \
  -X POST http://admin:12345678@$HOSTNAME:31000/api/dashboards/db \
  --data-binary @grafana/dashboard.json

Verification

Use the Grafana web UI to confirm that the resources were created successfully.

Check the data source.
datasource

Check the WebLogic dashboard.
dashboard

Now you can monitor the WebLogic domain with the dashboard.

Next: Setting up a Webhook