Install Grafana

Install and configure Grafana in your Kubernetes cluster to visualize metrics collected by Prometheus, with a step-by-step guide for setup and integration.

View Metrics on the Grafana Dashboard

To visualize metrics from various sources, you can import and configure Grafana dashboards.

Step 1: Configure Grafana Override Values

Create a file named override-grafana.yaml with the following content:

grafana:
  resourcesPreset: "small"
image:
  repository: bitnamilegacy/grafana
volumePermissions:
  repository: bitnamilegacy/os-shell
  resourcesPreset: "small"

Step 2: Install Grafana using Helm

```bash
    helm repo add bitnami https://charts.bitnami.com/bitnami
    helm repo update bitnami
    helm install grafana bitnami/grafana -n grafana --create-namespace -f override-grafana.yaml
```

Open the Grafana Dashboard

Follow these steps to access and set up the Grafana dashboard:

Step 1: Decode the Grafana Admin Password

```bash
kubectl get secret --namespace grafana grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo
```

The login username is `admin` by default.

Step 2: Port-forward the Grafana Service

```bash
kubectl port-forward svc/grafana -n grafana 8080:3000
```

Once port-forwarded, open [http://localhost:8080](http://localhost:8080) in your browser.

Step 3: Sign In and Add Prometheus as a Data Source

1. Go to Settings > Data Sources.

2. Click Add data source.

Add Data Source

1. Select Prometheus as the data source type.

Step 4: Configure Prometheus Connection

To connect to Prometheus deployed in the same Kubernetes cluster, use kubeDNS to define the Prometheus service address. The format for an incluster prometheus setup is:

http://<prometheus-service-name>.<namespace>.svc.cluster.local:<port>

For example:

http://my-release-kube-prometheus-prometheus.default.svc.cluster.local:9090/

Ensure the URL does not have trailing spaces or incorrect characters. Malformed URLs will cause the data source connection test to fail.

Step 5: Finalize Data Source Setup

• Set Prometheus type and Prometheus version as applicable.

• Click Save & test. You should see a success message confirming the connection.