Grafana 簡介與設置

How To Setup Grafana On Kubernetes - Beginners Guide

Grafana is an open-source lightweight dashboard tool. It can be integrated with many data sources like Prometheus, AWS cloud watch, Stackdriver, etc. Running Grafana on Kubernetes In our previous posts, we have looked at the following. Setup Prometheus on Kubernetes Setup Kube State Metrics Setup alert manager on Kubernetes This tutorial explains how to run Grafana on Kubernetes cluster.

https://devopscube.com/setup-grafana-kubernetes/

What is Grafana?

範例檔案

git clone https://github.com/bibinwilson/kubernetes-grafana.git

Deploy Grafana On Kubernetes

Step 1: Create a file named grafana-datasource-config.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: grafana-datasources
  namespace: monitoring
data:
  prometheus.yaml: |-
    {
        "apiVersion": 1,
        "datasources": [
            {
               "access":"proxy",
                "editable": true,
                "name": "prometheus",
                "orgId": 1,
                "type": "prometheus",
                "url": "http://prometheus-service.monitoring.svc:8080",
                "version": 1
            }
        ]
    }

Step 2: Create the configmap using the following command.

microk8s kubectl create -f grafana-datasource-config.yaml

Step 3: Create a file named deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: grafana
  namespace: monitoring
spec:
  replicas: 1
  selector:
    matchLabels:
      app: grafana
  template:
    metadata:
      name: grafana
      labels:
        app: grafana
    spec:
      containers:
      - name: grafana
        image: grafana/grafana:latest
        ports:
        - name: grafana
          containerPort: 3000
        resources:
          limits:
            memory: "1Gi"
            cpu: "1000m"
          requests: 
            memory: 500M
            cpu: "500m"
        volumeMounts:
          - mountPath: /var/lib/grafana
            name: grafana-storage
          - mountPath: /etc/grafana/provisioning/datasources
            name: grafana-datasources
            readOnly: false
      volumes:
        - name: grafana-storage
          emptyDir: {}
        - name: grafana-datasources
          configMap:
              defaultMode: 420
              name: grafana-datasources

Step 4: Create the deployment

microk8s kubectl create -f deployment.yaml

Step 5: Create a service file named service.yaml

apiVersion: v1
kind: Service
metadata:
  name: grafana
  namespace: monitoring
  annotations:
      prometheus.io/scrape: 'true'
      prometheus.io/port:   '3000'
spec:
  selector: 
    app: grafana
  type: NodePort  
  ports:
    - port: 3000
      targetPort: 3000

microk8s kubectl create -f service.yaml

查看 nodePort

microk8s kubectl get svc --namespace=monitoring

🔥

issue: grafana 顯示 plugin.downStreamError 可以去改 deployment 的設定檔，指定 image 的版本為更新或舊的

Docker Hub

https://hub.docker.com/r/grafana/grafana/tags?page=1