feat(prometheus): Add self scraping

manifests/prometheus/kustomization.yaml

@@ -2,4 +2,6 @@ resources:
   - serviceaccount.yaml
   - clusterrole.yaml
   - clusterrolebinding.yaml
+  - service.yaml
+  - servicemonitor.yaml
   - prometheus.yaml

manifests/prometheus/prometheus.yaml

@@ -7,6 +7,9 @@ spec:
   serviceAccountName: prometheus
   serviceMonitorNamespaceSelector: {}
   serviceMonitorSelector: {}
+  podMonitorSelector:
+    matchLabels:
+      team: core
   resources:
     requests:
       memory: 300Mi

manifests/prometheus/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: prometheus-svc
+  namespace: monitoring
+  labels:
+    app.kubernetes.io/name: prometheus
+spec:
+  ports:
+    - name: web
+      port: 9090
+      protocol: TCP
+      targetPort: web
+  selector:
+    app.kubernetes.io/name: prometheus
+

manifests/prometheus/servicemonitor.yaml

@@ -0,0 +1,14 @@
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: prometheus
+  namespace: monitoring
+  labels:
+    team: core
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: prometheus
+  endpoints:
+    - port: web
+      path: /metrics