GRAFANA HA

#1 Create a namespace for your Grafana HA setup:

kubectl create namespace grafana-ha
kubectl config set-context --current --namespace=grafana-ha

#2 Create a file named postgres-deployment.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
      - name: postgres
        image: postgres:13
        env:
        - name: POSTGRES_DB
          value: grafana
        - name: POSTGRES_USER
          value: grafana
        - name: POSTGRES_PASSWORD
          value: grafanapassword
        ports:
        - containerPort: 5432
---
apiVersion: v1
kind: Service
metadata:
  name: postgres
spec:
  selector:
    app: postgres
  ports:
    - port: 5432

# luego kubectl apply -f postgres-deployment.yaml
#3 Create a file named grafana-config.yaml:
apiVersion: v1
kind: ConfigMap
metadata:
  name: grafana-config
data:
  grafana.ini: |
    [database]
    type = postgres
    host = postgres:5432
    name = grafana
    user = grafana
    password = grafanapassword

    [server]
    http_port = 3001
---
apiVersion: v1
kind: Secret
metadata:
  name: grafana-secret
type: Opaque
stringData:
  admin-password: adminpassword

#kubectl apply -f grafana-config.yaml

#4 Create a file named grafana-deployment.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
  name: grafana
spec:
  replicas: 2
  selector:
    matchLabels:
      app: grafana
  template:
    metadata:
      labels:
        app: grafana
    spec:
      containers:
      - name: grafana
        image: grafana/grafana:latest
        ports:
        - containerPort: 3001
        volumeMounts:
        - name: config
          mountPath: /etc/grafana/grafana.ini
          subPath: grafana.ini
        env:
        - name: GF_SECURITY_ADMIN_PASSWORD
          valueFrom:
            secretKeyRef:
              name: grafana-secret
              key: admin-password
      volumes:
      - name: config
        configMap:
          name: grafana-config
---
apiVersion: v1
kind: Service
metadata:
  name: grafana
spec:
  selector:
    app: grafana
  ports:
    - port: 3001
      targetPort: 3001
  type: LoadBalancer

#kubectl apply -f grafana-deployment.yaml

# 5 Verify the setup:

kubectl get pods
kubectl get services

#6 Access Grafana:
http://localhost:3001/login

Use the EXTERNAL-IP and port 3001 to access Grafana in your browser.

If you're running this locally or in an environment that doesn't support LoadBalancer, you can use port-forwarding:

bash
Copy Code
kubectl port-forward service/grafana 3001:3001