# Grafana Dashboard
Prerequisites:
* Kubernetes cluster with at least one Ice Lake node
* Cert-Manager
* Istioctl
* Helm

This README contains:
- [Installing Grafana Dashboard](#deployment)
- [Uninstallation](#uninstallation)

## Deployment

Install Istio with the BOOTSTRAP_XDS_AGENT environment variable and Envoy Filter with the cryptomb values.
```
istioctl install -f intel/yaml/intel-istio-cryptomb.yaml
kubectl apply -f intel/yaml/envoy-filter-cryptomb-stats.yaml
```

Install Cert-Manager issuer and certificate for the Istio-IngressGateway TLS endpoint.
```
kubectl apply -f intel/yaml/grafana-gw-certificates.yaml
```

Create a separate namespace to isolate monitoring services and applications.
```
kubectl create ns monitoring
```

Install Kube-Prometheus-Stack.
```
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack -n monitoring
helm upgrade kube-prometheus-stack prometheus-community/kube-prometheus-stack -f intel/yaml/grafana-dashboard-values.yaml -n monitoring
```

Install Istio Ingress Gateway and Virtual Services for Grafana and Prometheus.
```
kubectl apply -f intel/yaml/grafana-istio-gw-vs.yaml
```
To access Grafana and Prometheus UIs, use:
* a) Istio-IngressGateway service load balancing address.
* b) Kubectl port-forwarding to the service and connect localhost.
  Paths are /grafana/ and /prometheus/.
Grafana UI Credentials:
 * login: admin
 * password: prom-operator

Restart Envoy of the Istio Ingress Gateway.
```
kubectl rollout restart deployment -n istio-system istio-ingressgateway
```
Import the dashboard using Grafana UI.

1. Login to Grafana
2. Create -> Import -> Upload JSON file (intel/json/intel-distribution-of-istio.json)

## Uninstallation
Use the following command to uninstall kube-prometheus-stack from cluster.
```
helm uninstall kube-prometheus-stack -n monitoring
```

Remove deployment.
```
kubectl delete -f intel/yaml/envoy-filter-cryptomb-stats.yaml -f intel/yaml/grafana-gw-certificates.yaml -f intel/yaml/grafana-istio-gw-vs.yaml
istioctl x uninstall --purge # to delete all Istio components from the cluster
```