feat: deploy pod monitor to collect metrics

deploy/caddy/caddy.json

@@ -14,9 +14,19 @@
                                     "root": "/usr/share/caddy",
                                     "index_names": [
                                         "index.html"
-                                    ],
+                                    ]
-                                    "pass_thru": true
+                                }
+                            ]
+                        }
+                    ]
                 },
+                "metrics" : {
+                    "listen": [
+                        ":9100"
+                    ],
+                    "routes": [
+                        {
+                            "handle": [
                                 {
                                     "handler": "metrics"
                                 }

deploy/helm/templates/deployment.yaml

@@ -36,14 +36,17 @@ spec:
             - name: http
               containerPort: 3000
               protocol: TCP
+            - name: metrics
+              containerPort: 9100
+              protocol: TCP
           livenessProbe:
             httpGet:
               path: /metrics
-              port: http
+              port: metrics
           readinessProbe:
             httpGet:
               path: /metrics
-              port: http
+              port: metrics
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
       {{- with .Values.nodeSelector }}

deploy/helm/templates/pod_monitor.yaml

@@ -0,0 +1,12 @@
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: {{ include "web.fullname" . }}
+  labels:
+    {{- include "web.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "web.selectorLabels" . | nindent 6 }}
+  podMetricsEndpoints:
+  - port: metrics