pgdogdev · levkk · Jan 14, 2026 · Jan 14, 2026 · Jan 14, 2026 · Jan 14, 2026
diff --git a/Chart.yaml b/Chart.yaml
@@ -1,4 +1,4 @@
 apiVersion: v1
 name: pgdog
-version: v0.31
+version: v0.32
 appVersion: "0.1.22"
diff --git a/templates/_helpers.tpl b/templates/_helpers.tpl
@@ -85,3 +85,29 @@ app.kubernetes.io/instance: {{ .Release.Name }}
 app.kubernetes.io/component: gateway
 {{- end }}
 {{- end }}
+
+{{/*
+Common labels for prometheus-collector
+*/}}
+{{- define "pgdog.prometheusCollector.labels" -}}
+{{- if .Values.prometheusCollector.labels }}
+{{- toYaml .Values.prometheusCollector.labels }}
+{{- else -}}
+app.kubernetes.io/name: {{ include "pgdog.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: prometheus-collector
+{{- end }}
+{{- end }}
+
+{{/*
+Selector labels for prometheus-collector
+*/}}
+{{- define "pgdog.prometheusCollector.selectorLabels" -}}
+{{- if .Values.prometheusCollector.selectorLabels }}
+{{- toYaml .Values.prometheusCollector.selectorLabels }}
+{{- else -}}
+app.kubernetes.io/name: {{ include "pgdog.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: prometheus-collector
+{{- end }}
+{{- end }}
diff --git a/templates/prometheus-collector/config.yaml b/templates/prometheus-collector/config.yaml
@@ -0,0 +1,55 @@
+{{- if .Values.prometheusCollector.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "pgdog.fullname" . }}-prometheus-collector
+  labels:
+    {{- include "pgdog.prometheusCollector.labels" . | nindent 4 }}
+data:
+  prometheus.yml: |
+    global:
+      scrape_interval: {{ .Values.prometheusCollector.scrapeInterval | default "15s" }}
+      evaluation_interval: {{ .Values.prometheusCollector.evaluationInterval | default "15s" }}
+      {{- if .Values.clusterName }}
+      external_labels:
+        cluster: {{ .Values.clusterName | quote }}
+      {{- end }}
+
+    scrape_configs:
+      - job_name: 'pgdog'
+        kubernetes_sd_configs:
+          - role: pod
+            namespaces:
+              names:
+                - {{ .Release.Namespace }}
+        relabel_configs:
+          # Only scrape pods matching pgdog selector labels
+          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_name]
+            action: keep
+            regex: {{ include "pgdog.name" . }}
+          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_instance]
+            action: keep
+            regex: {{ .Release.Name }}
+          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_component]
+            action: keep
+            regex: pgdog
+          # Set the metrics port
+          - source_labels: [__address__]
+            action: replace
+            regex: ([^:]+)(?::\d+)?
+            replacement: $1:{{ .Values.openMetricsPort }}
+            target_label: __address__
+          # Add pod metadata as labels
+          - source_labels: [__meta_kubernetes_pod_name]
+            action: replace
+            target_label: pod
+          - source_labels: [__meta_kubernetes_pod_node_name]
+            action: replace
+            target_label: node
+          - source_labels: [__meta_kubernetes_namespace]
+            action: replace
+            target_label: namespace
+          - source_labels: [__meta_kubernetes_pod_ip]
+            action: replace
+            target_label: pod_ip
+{{- end }}
diff --git a/templates/prometheus-collector/deployment.yaml b/templates/prometheus-collector/deployment.yaml
@@ -0,0 +1,122 @@
+{{- if .Values.prometheusCollector.enabled }}
+{{- $tlsEnabled := .Values.prometheusCollector.tls.enabled }}
+{{- $basicAuthEnabled := .Values.prometheusCollector.basicAuth.enabled }}
+{{- $webConfigEnabled := or $tlsEnabled $basicAuthEnabled }}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "pgdog.fullname" . }}-prometheus-collector
+  labels:
+    {{- include "pgdog.prometheusCollector.labels" . | nindent 4 }}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      {{- include "pgdog.prometheusCollector.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "pgdog.prometheusCollector.selectorLabels" . | nindent 8 }}
+      {{- if .Values.prometheusCollector.podAnnotations }}
+      annotations:
+        {{- toYaml .Values.prometheusCollector.podAnnotations | nindent 8 }}
+      {{- end }}
+    spec:
+      {{- if .Values.serviceAccount.create }}
+      serviceAccountName: {{ include "pgdog.serviceAccountName" . }}
+      {{- end }}
+      containers:
+        - name: prometheus
+          image: {{ .Values.prometheusCollector.image.repository }}:{{ .Values.prometheusCollector.image.tag }}
+          imagePullPolicy: {{ .Values.prometheusCollector.image.pullPolicy }}
+          args:
+            - "--config.file=/etc/prometheus/prometheus.yml"
+            - "--storage.tsdb.path=/prometheus"
+            - "--web.listen-address=:{{ .Values.prometheusCollector.port }}"
+            - "--web.enable-lifecycle"
+            - "--storage.tsdb.retention.time={{ .Values.prometheusCollector.retention.time }}"
+            - "--storage.tsdb.retention.size={{ .Values.prometheusCollector.retention.size }}"
+            {{- if $webConfigEnabled }}
+            - "--web.config.file=/etc/prometheus-web/web.yml"
+            {{- end }}
+          ports:
+            - name: prometheus
+              containerPort: {{ .Values.prometheusCollector.port }}
+              protocol: TCP
+          {{- if .Values.prometheusCollector.resources }}
+          resources:
+            {{- toYaml .Values.prometheusCollector.resources | nindent 12 }}
+          {{- end }}
+          volumeMounts:
+            - name: config
+              mountPath: /etc/prometheus
+            - name: storage
+              mountPath: /prometheus
+            {{- if $webConfigEnabled }}
+            - name: web-config
+              mountPath: /etc/prometheus-web
+              readOnly: true
+            {{- end }}
+          livenessProbe:
+            {{- if or $tlsEnabled $basicAuthEnabled }}
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - |
+                  {{- if $basicAuthEnabled }}
+                  wget -q --spider {{ if $tlsEnabled }}--no-check-certificate https{{ else }}http{{ end }}://{{ .Values.prometheusCollector.basicAuth.username }}:$(cat /etc/prometheus-web/password)@localhost:{{ .Values.prometheusCollector.port }}/-/healthy
+                  {{- else }}
+                  wget -q --spider --no-check-certificate https://localhost:{{ .Values.prometheusCollector.port }}/-/healthy
+                  {{- end }}
+            {{- else }}
+            httpGet:
+              path: /-/healthy
+              port: prometheus
+            {{- end }}
+            initialDelaySeconds: 30
+            periodSeconds: 15
+          readinessProbe:
+            {{- if or $tlsEnabled $basicAuthEnabled }}
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - |
+                  {{- if $basicAuthEnabled }}
+                  wget -q --spider {{ if $tlsEnabled }}--no-check-certificate https{{ else }}http{{ end }}://{{ .Values.prometheusCollector.basicAuth.username }}:$(cat /etc/prometheus-web/password)@localhost:{{ .Values.prometheusCollector.port }}/-/ready
+                  {{- else }}
+                  wget -q --spider --no-check-certificate https://localhost:{{ .Values.prometheusCollector.port }}/-/ready
+                  {{- end }}
+            {{- else }}
+            httpGet:
+              path: /-/ready
+              port: prometheus
+            {{- end }}
+            initialDelaySeconds: 5
+            periodSeconds: 5
+      volumes:
+        - name: config
+          configMap:
+            name: {{ include "pgdog.fullname" . }}-prometheus-collector
+        - name: storage
+          emptyDir:
+            sizeLimit: {{ .Values.prometheusCollector.storage.size }}
+        {{- if $webConfigEnabled }}
+        - name: web-config
+          secret:
+            secretName: {{ include "pgdog.fullname" . }}-prometheus-collector
+        {{- end }}
+      {{- with .Values.prometheusCollector.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.prometheusCollector.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.prometheusCollector.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+{{- end }}
diff --git a/templates/prometheus-collector/secret.yaml b/templates/prometheus-collector/secret.yaml
@@ -0,0 +1,34 @@
+{{- if .Values.prometheusCollector.enabled }}
+{{- $tlsEnabled := .Values.prometheusCollector.tls.enabled }}
+{{- $basicAuthEnabled := .Values.prometheusCollector.basicAuth.enabled }}
+{{- if or $tlsEnabled $basicAuthEnabled }}
+{{- $cert := genSelfSignedCert "prometheus-collector" nil (list "localhost" (printf "%s-prometheus-collector" (include "pgdog.fullname" .))) 3650 }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "pgdog.fullname" . }}-prometheus-collector
+  labels:
+    {{- include "pgdog.prometheusCollector.labels" . | nindent 4 }}
+type: Opaque
+stringData:
+  web.yml: |
+    {{- if $tlsEnabled }}
+    tls_server_config:
+      cert_file: /etc/prometheus-web/tls.crt
+      key_file: /etc/prometheus-web/tls.key
+    {{- end }}
+    {{- if $basicAuthEnabled }}
+    basic_auth_users:
+      {{ .Values.prometheusCollector.basicAuth.username }}: {{ .Values.prometheusCollector.basicAuth.passwordHash }}
+    {{- end }}
+  {{- if $basicAuthEnabled }}
+  password: {{ .Values.prometheusCollector.basicAuth.password | quote }}
+  {{- end }}
+  {{- if $tlsEnabled }}
+  tls.crt: |
+{{ $cert.Cert | indent 4 }}
+  tls.key: |
+{{ $cert.Key | indent 4 }}
+  {{- end }}
+{{- end }}
+{{- end }}
diff --git a/templates/prometheus-collector/service.yaml b/templates/prometheus-collector/service.yaml
@@ -0,0 +1,35 @@
+{{- if .Values.prometheusCollector.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "pgdog.fullname" . }}-prometheus-collector
+  labels:
+    {{- include "pgdog.prometheusCollector.labels" . | nindent 4 }}
+  {{- if or .Values.prometheusCollector.service.annotations .Values.prometheusCollector.service.aws.enabled }}
+  annotations:
+    {{- if .Values.prometheusCollector.service.aws.enabled }}
+    service.beta.kubernetes.io/aws-load-balancer-scheme: {{ .Values.prometheusCollector.service.aws.scheme | quote }}
+    service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
+    service.beta.kubernetes.io/aws-load-balancer-nlb-target-type: "ip"
+    service.beta.kubernetes.io/aws-load-balancer-type: "nlb"
+    service.beta.kubernetes.io/aws-load-balancer-manage-backend-security-group-rules: "true"
+    {{- end }}
+    {{- with .Values.prometheusCollector.service.annotations }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- end }}
+spec:
+  {{- if .Values.prometheusCollector.service.aws.enabled }}
+  type: LoadBalancer
+  loadBalancerClass: service.k8s.aws/nlb
+  {{- else }}
+  type: {{ .Values.prometheusCollector.service.type }}
+  {{- end }}
+  ports:
+    - name: prometheus
+      port: {{ .Values.prometheusCollector.port }}
+      targetPort: prometheus
+      protocol: TCP
+  selector:
+    {{- include "pgdog.prometheusCollector.selectorLabels" . | nindent 4 }}
+{{- end }}
diff --git a/templates/role.yaml b/templates/role.yaml
@@ -14,5 +14,11 @@ rules:
   - apiGroups: [""]
     resources: ["secrets"]
     verbs: ["get", "list", "watch"]
+  {{- if .Values.prometheusCollector.enabled }}
+  # Allow Prometheus to discover pods for scraping
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "list", "watch"]
+  {{- end }}
 {{- end }}
 
diff --git a/templates/service.yaml b/templates/service.yaml
@@ -8,7 +8,7 @@ metadata:
     service.beta.kubernetes.io/aws-load-balancer-scheme: {{ .Values.service.aws.scheme | quote }}
     service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
     service.beta.kubernetes.io/aws-load-balancer-nlb-target-type: "ip"
-    service.beta.kubernetes.io/aws-load-balancer-type: "external"
+    service.beta.kubernetes.io/aws-load-balancer-type: "nlb"
     service.beta.kubernetes.io/aws-load-balancer-manage-backend-security-group-rules: "true"
     service.beta.kubernetes.io/aws-load-balancer-listener-attributes.TCP-{{ .Values.port }}: tcp.idle_timeout.seconds=1800
       {{- if .Values.healthcheckPort }}

diff --git a/test/values-prometheus-collector.yaml b/test/values-prometheus-collector.yaml
@@ -0,0 +1,51 @@
+# Test Prometheus collector configuration
+prometheusCollector:
+  enabled: true
+  port: 9090
+  scrapeInterval: 30s
+  evaluationInterval: 30s
+  image:
+    repository: prom/prometheus
+    tag: v2.48.0
+    pullPolicy: IfNotPresent
+  resources:
+    requests:
+      cpu: 100m
+      memory: 128Mi
+    limits:
+      cpu: 200m
+      memory: 256Mi
+  storage:
+    size: 5Gi
+  retention:
+    time: 7d
+    size: 2GB
+  # basicAuth:
+  #   enabled: true
+  #   username: prometheus
+  #   # bcrypt hash of "testpassword"
+  #   passwordHash: "$2a$10$IpLmUJvKPpVJkhbP6YVmAOQXoKr4kXXXXXXXXXXXXXXXXXXXXXXX"
+  service:
+    type: ClusterIP
+    annotations: {}
+    aws:
+      enabled: true
+      scheme: internal
+  nodeSelector:
+    monitoring: "true"
+  tolerations:
+    - key: dedicated
+      operator: Equal
+      value: monitoring
+      effect: NoSchedule
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+          - matchExpressions:
+              - key: monitoring
+                operator: In
+                values:
+                  - "true"
+  podAnnotations:
+    prometheus.io/scrape: "false"