working prometheus and grafana on master node

apps/grafana/grafana.yaml

@@ -12,14 +12,30 @@ spec:
       labels:
         app: grafana
     spec:
+      nodeSelector:
+        kubernetes.io/hostname: raspberrypi
+      securityContext:
+        fsGroup: 472
+        supplementalGroups:
+          - 0
       containers:
         - name: grafana
           image: grafana/grafana:10.4.1
           ports:
             - containerPort: 3000
-          volumeMounts:
-            - name: grafana-data
-              mountPath: /var/lib/grafana
+              name: http-grafana
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /robots.txt
+              port: 3000
+            initialDelaySeconds: 10
+            periodSeconds: 30
+          livenessProbe:
+            tcpSocket:
+              port: 3000
+            initialDelaySeconds: 30
+            periodSeconds: 10
           resources:
             requests:
               memory: "256Mi"
@@ -27,10 +43,15 @@ spec:
             limits:
               memory: "512Mi"
               cpu: "500m"
+          volumeMounts:
+            - name: grafana-data
+              mountPath: /var/lib/grafana
       volumes:
         - name: grafana-data
           persistentVolumeClaim:
             claimName: grafana-data-pvc
+
+
 ---
 apiVersion: v1
 kind: Service

apps/grafana/pvc.yaml

@@ -3,8 +3,9 @@ kind: PersistentVolumeClaim
 metadata:
   name: grafana-data-pvc
 spec:
+  storageClassName: local-path
   accessModes:
     - ReadWriteOnce
   resources:
     requests:
-      storage: 5Gi
+      storage: 5Gi

apps/prometheus/prometheus.yaml

@@ -12,6 +12,8 @@ spec:
       labels:
         app: prometheus
     spec:
+      nodeSelector:
+        kubernetes.io/hostname: raspberrypi
       containers:
         - name: prometheus
           image: prom/prometheus:v2.52.0

apps/prometheus/pvc.yaml

@@ -3,8 +3,9 @@ kind: PersistentVolumeClaim
 metadata:
   name: prometheus-data-pvc
 spec:
+  storageClassName: local-path
   accessModes:
     - ReadWriteOnce
   resources:
     requests:
-      storage: 20Gi
+      storage: 20Gi