---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: grafana
  name: grafana
spec:
  # Never run two Grafana processes against the same local data directory.
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: grafana
  template:
    metadata:
      labels:
        app: grafana
    spec:
      securityContext:
        fsGroup: 472
        supplementalGroups:
          - 0
      containers:
        - name: grafana
          image: grafana/grafana:latest
          # GF_SERVER_ROOT_URL and GF_SERVER_SERVE_FROM_SUB_PATH are deliberately
          # absent: Grafana builds every asset link and redirect from them, so
          # their value depends on how it is published. `monitor --observability`
          # sets both from the resolved exposure, which is the one place that
          # knows.
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
              name: http-grafana
              protocol: TCP
          readinessProbe:
            failureThreshold: 3
            httpGet:
              path: /robots.txt
              port: 3000
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 30
            successThreshold: 1
            timeoutSeconds: 2
          livenessProbe:
            failureThreshold: 3
            initialDelaySeconds: 30
            periodSeconds: 10
            successThreshold: 1
            tcpSocket:
              port: 3000
            timeoutSeconds: 1
          resources:
            requests:
              cpu: 250m
              memory: 750Mi
          volumeMounts:
            - mountPath: /var/lib/grafana
              name: grafana-pv
            - mountPath: /etc/grafana/provisioning/datasources
              name: grafana-datasources
              readOnly: true
            - mountPath: /etc/grafana/provisioning/dashboards
              name: grafana-dashboard-provider
              readOnly: true
            - mountPath: /var/lib/grafana/dashboards
              name: grafana-dashboards
              readOnly: true
      volumes:
        - name: grafana-pv
          persistentVolumeClaim:
            claimName: grafana-pvc
        - name: grafana-datasources
          configMap:
            name: grafana-datasources
        - name: grafana-dashboard-provider
          configMap:
            name: grafana-dashboard-provider
        - name: grafana-dashboards
          configMap:
            name: grafana-dashboards