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How to design a grafana dashboard

Prerequisites

You must enable the observability service by creating a MultiClusterObservability CustomResource (CR) instance.

Setup grafana develop instance

Firstly, you should use this script setup-grafana-dev.sh to setup your grafana instance. You need to run this as a kubeadmin user.

$ ./setup-grafana-dev.sh --deploy
secret/grafana-dev-config created
deployment.apps/grafana-dev created
service/grafana-dev created
serviceaccount/grafana-dev created
clusterrolebinding.rbac.authorization.k8s.io/open-cluster-management:grafana-crb-dev created
route.route.openshift.io/grafana-dev created
persistentvolumeclaim/grafana-dev created
oauthclient.oauth.openshift.io/grafana-proxy-client-dev created
deployment.apps/grafana-dev patched
service/grafana-dev patched
route.route.openshift.io/grafana-dev patched
oauthclient.oauth.openshift.io/grafana-proxy-client-dev patched
clusterrolebinding.rbac.authorization.k8s.io/open-cluster-management:grafana-crb-dev patched

Grafana dev URL: grafana-dev-open-cluster-management-observability.apps.<basedomain>.com

Switch user to be grafana admin

Secondly, you need to ask a user to login grafana-dev host before use this script switch-to-grafana-admin.sh to switch the user to be a grafana admin.

$ ./switch-to-grafana-admin.sh kube:admin
User <kube:admin> switched to be grafana admin

The above example shows a kubeadmin user. However, let us say the following user is logged in:

oc whoami
frank

Now, if we want to make frank Grafana admin, we will simply run:

$ ./switch-to-grafana-admin.sh frank
User frank switched to be grafana admin

Design your grafana dashboard

Now, refresh the grafana console and follow these steps to design your dashboard:

1. Click the + icon on the left panel, select Create Dashboard, and then click Add new panel.
2. In the New Dashboard/Edit Panel view, go to the Query tab.
3. Configure your query by selecting Observatorium from the data source selector and enter a PromQL query.
4. Click the Save icon in the top right corner of your screen to save the dashboard.
5. Add a descriptive name, and then click Save.

You can use this script generate-dashboard-configmap-yaml.sh to generate a dashboard configmap and save it to local.

./generate-dashboard-configmap-yaml.sh "Your Dashboard Name"
Save dashboard <your-dashboard-name> to ./your-dashboard-name.yaml

If you have not permission to run this script generate-dashboard-configmap-yaml.sh, you can following these steps to create a dashboard configmap:

1. Go to a dashboard, click the Dashboard settings icon.
2. Click the JSON Model icon on the left panel.
3. Copy the dashboard json data and put it in to $your-dashboard-name field.
4. Modify $your-dashboard-name field.

kind: ConfigMap
apiVersion: v1
metadata:
  name: $your-dashboard-name
  namespace: open-cluster-management-observability
  labels:
    grafana-custom-dashboard: "true"
data:
  $your-dashboard-name.json: |
    $your_dashboard_json

Note: if your dashboard is not in General folder, you can specify the folder name in annotations of this ConfigMap:

annotations:
  observability.open-cluster-management.io/dashboard-folder: Custom

1. Update metrics allowlist

When you generate a new dashboard like example/custom-dashboard.yaml, there may have no data when you first create it. This is because it depends on some new metrics which don't upload to hub by default. You also need to update custom metrics allowlist, so that new metrics can be uploaded to the server and shown in dashboard. In this example, run the following command to update metrics.

oc apply -f observability-metrics-custom-allowlist.yaml

Uninstall grafana develop instance

You can use the following command to uninstall your grafana instance.

$ ./setup-grafana-dev.sh --clean
secret "grafana-dev-config" deleted
deployment.apps "grafana-dev" deleted
serviceaccount "grafana-dev" deleted
route.route.openshift.io "grafana-dev" deleted
persistentvolumeclaim "grafana-dev" deleted
oauthclient.oauth.openshift.io "grafana-proxy-client-dev" deleted
clusterrolebinding.rbac.authorization.k8s.io "open-cluster-management:grafana-crb-dev" deleted