starrocks-kubernetes-operator

Deploy Prometheus and Grafana

There are two ways to deploy Prometheus and Grafana service in the Kubernetes environment.

1. Deploy Prometheus and Grafana Service Directly.
2. Deploy Prometheus and Grafana Service by Operator.

Inorder to scrape the metrics by ServiceMonitor CRD, you must install the Prometheus Operator in the Kubernetes. That is to say, you must choose the second way to deploy Prometheus and Grafana Service.

1. Deploy Prometheus and Grafana Service Directly

1.1 Deploy Prometheus Service

SKIP this step if the Prometheus service is already available in the Kubernetes environment.

Follow the instructions from Prometheus Helm Chart to deploy the Prometheus service into the Kubernetes environment.

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update prometheus-community
helm install prometheus prometheus-community/prometheus

1.2 Deploy Grafana Service

SKIP this step if the Grafana service is already available in the Kubernetes environment.

Follow the instructions from Grafana Helm Chart to deploy the Grafana service into the Kubernetes environment.

Need override the default value of the grafana service, change the Grafana service type from default ClusterIP to LoadBalancer in order to access the Grafana service from the outside Kubernetes network.

An example grafana-values.yaml may look like as the following snippet.

service:
  enabled: true
  type: "LoadBalancer"

Install the Grafana service with the following commands.

helm repo add grafana https://grafana.github.io/helm-charts
helm repo update grafana
helm install grafana -f grafana-values.yaml grafana/grafana

2. Deploy Prometheus and Grafana Service by Operator

you can also install kube-prometheus-stack chart which will install Prometheus operator, Prometheus service and Grafana service.

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update prometheus-community
helm install prometheus prometheus-community/kube-prometheus-stack

4. Login And Configure Grafana Service

SKIP this section if the prometheus data source is already configured in Grafana.

4.1 Get Grafana Service External Address

Run the following command to get the external ip address

kubectl get svc grafana

A possible result may look like the follows

$ kubectl get svc grafana
NAME      TYPE           CLUSTER-IP    EXTERNAL-IP     PORT(S)        AGE
grafana   LoadBalancer   10.40.6.237   35.239.53.124   80:31362/TCP   4m25s

4.2 Get Grafana Admin Password

Run the following command to get the login password for admin user.

kubectl get secrets grafana -o yaml | grep admin-password | awk '{print $2}' | base64 -d

4.3 Login Grafana and Configure Prometheus Data Source

Access Grafana web GUI with http://<external_ip>/, login with admin:<password>.

From the navigation path, "Administration" -> "Configuration" -> "Add Data Source", set the HTTP.URL to http://prometheus-server.default. Change default to the correct namespace if the prometheus service is not deployed in the default namespace. Refer to Grafana doc here for detailed instructions.

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