Add role-based filtering and imporve code

infrastructure/kubernetes/base/components/monitoring/prometheus.yaml

@@ -0,0 +1,210 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: prometheus
+  namespace: monitoring
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: prometheus
+rules:
+- apiGroups: [""]
+  resources:
+  - nodes
+  - nodes/proxy
+  - services
+  - endpoints
+  - pods
+  verbs: ["get", "list", "watch"]
+- apiGroups:
+  - extensions
+  resources:
+  - ingresses
+  verbs: ["get", "list", "watch"]
+- nonResourceURLs: ["/metrics"]
+  verbs: ["get"]
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: prometheus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: prometheus
+subjects:
+- kind: ServiceAccount
+  name: prometheus
+  namespace: monitoring
+
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: prometheus-config
+  namespace: monitoring
+data:
+  prometheus.yml: |
+    global:
+      scrape_interval: 30s
+      evaluation_interval: 30s
+      external_labels:
+        cluster: 'bakery-ia'
+        environment: 'production'
+
+    scrape_configs:
+      # Scrape Prometheus itself
+      - job_name: 'prometheus'
+        static_configs:
+          - targets: ['localhost:9090']
+
+      # Scrape all bakery-ia services
+      - job_name: 'bakery-services'
+        kubernetes_sd_configs:
+          - role: pod
+            namespaces:
+              names:
+                - bakery-ia
+        relabel_configs:
+          # Only scrape pods with metrics port
+          - source_labels: [__meta_kubernetes_pod_container_port_name]
+            action: keep
+            regex: http
+
+          # Add service name label
+          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_name]
+            target_label: service
+
+          # Add component label
+          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_component]
+            target_label: component
+
+          # Add pod name
+          - source_labels: [__meta_kubernetes_pod_name]
+            target_label: pod
+
+          # Set metrics path
+          - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
+            action: replace
+            target_label: __metrics_path__
+            regex: (.+)
+
+          # Set scrape port
+          - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
+            action: replace
+            regex: ([^:]+)(?::\d+)?;(\d+)
+            replacement: $1:$2
+            target_label: __address__
+
+      # Scrape Kubernetes nodes
+      - job_name: 'kubernetes-nodes'
+        kubernetes_sd_configs:
+          - role: node
+        relabel_configs:
+          - action: labelmap
+            regex: __meta_kubernetes_node_label_(.+)
+          - target_label: __address__
+            replacement: kubernetes.default.svc:443
+          - source_labels: [__meta_kubernetes_node_name]
+            regex: (.+)
+            target_label: __metrics_path__
+            replacement: /api/v1/nodes/${1}/proxy/metrics
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: prometheus
+  namespace: monitoring
+  labels:
+    app: prometheus
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: prometheus
+  template:
+    metadata:
+      labels:
+        app: prometheus
+    spec:
+      serviceAccountName: prometheus
+      containers:
+      - name: prometheus
+        image: prom/prometheus:v2.48.0
+        args:
+          - '--config.file=/etc/prometheus/prometheus.yml'
+          - '--storage.tsdb.path=/prometheus'
+          - '--storage.tsdb.retention.time=30d'
+          - '--web.console.libraries=/usr/share/prometheus/console_libraries'
+          - '--web.console.templates=/usr/share/prometheus/consoles'
+          - '--web.enable-lifecycle'
+        ports:
+        - containerPort: 9090
+          name: web
+        volumeMounts:
+        - name: prometheus-config
+          mountPath: /etc/prometheus
+        - name: prometheus-storage
+          mountPath: /prometheus
+        resources:
+          requests:
+            memory: "1Gi"
+            cpu: "500m"
+          limits:
+            memory: "2Gi"
+            cpu: "1"
+        livenessProbe:
+          httpGet:
+            path: /-/healthy
+            port: 9090
+          initialDelaySeconds: 30
+          periodSeconds: 10
+        readinessProbe:
+          httpGet:
+            path: /-/ready
+            port: 9090
+          initialDelaySeconds: 5
+          periodSeconds: 5
+      volumes:
+      - name: prometheus-config
+        configMap:
+          name: prometheus-config
+      - name: prometheus-storage
+        persistentVolumeClaim:
+          claimName: prometheus-storage
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: prometheus-storage
+  namespace: monitoring
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 20Gi
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: prometheus
+  namespace: monitoring
+  labels:
+    app: prometheus
+spec:
+  type: ClusterIP
+  ports:
+  - port: 9090
+    targetPort: 9090
+    protocol: TCP
+    name: web
+  selector:
+    app: prometheus