feat(chart): add a pod monitor to scrape metrics (#42)

SwanseaUniversityMedical · Dec 18, 2023 · 54a5ed0 · 54a5ed0
1 parent 0035ede
commit 54a5ed0
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Showing 4 changed files with 49 additions and 2 deletions.
diff --git a/charts/canary/templates/controller/daemonset.yaml b/charts/canary/templates/controller/daemonset.yaml
@@ -68,7 +68,8 @@ spec:
           {{- include "canary.image" (dict "image" .Values.controller.image) | indent 10 }}
 
           ports:
-            - containerPort: 8080
+            - name: http-metrics
+              containerPort: 8080
 
           envFrom:
             {{- include "canary.envFrom" (dict "Release" .Release "Values" .Values "extraEnv" .Values.controller.extraEnvFrom) | indent 12 }}

diff --git a/charts/canary/templates/controller/deployment.yaml b/charts/canary/templates/controller/deployment.yaml
@@ -62,7 +62,8 @@ spec:
           {{- include "canary.image" (dict "image" .Values.controller.image) | indent 10 }}
 
           ports:
-            - containerPort: 8080
+            - name: http-metrics
+              containerPort: 8080
 
           envFrom:
             {{ include "canary.envFrom" (dict "extraEnv" .Values.controller.extraEnvFrom) | indent 12 }}

diff --git a/charts/canary/templates/prometheus/podmonitor.yaml b/charts/canary/templates/prometheus/podmonitor.yaml
@@ -0,0 +1,36 @@
+{{- if .Values.podMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: {{ include "canary.fullname" . }}-podmonitor
+  namespace: {{ .Release.Namespace }}
+
+  labels:
+    app: {{ include "canary.labels.app" . }}
+    component: podmonitor
+    chart: {{ include "canary.labels.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    {{- range $key, $value := .Values.podMonitor.labels }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+  annotations:
+    {{- range $key, $value := .Values.podMonitor.annotations }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+
+spec:
+  jobLabel: {{ include "canary.fullname" . }}
+  podMetricsEndpoints:
+    - interval: {{ .Values.podMonitor.interval }}
+      path: /metrics
+      port: http-metrics
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      app: {{ include "canary.labels.app" . }}
+      component: controller
+      chart: {{ include "canary.labels.chart" . }}
+{{- end }}
diff --git a/charts/canary/values.yaml b/charts/canary/values.yaml
@@ -1,6 +1,15 @@
 crds:
   enabled: true
 
+podMonitor:
+  enabled: true
+
+  labels: {}
+  annotations: {}
+
+  interval: 30s
+
+
 controller:
   enabled: true