feat: add service monitor

Signed-off-by: Victor Login <[email protected]>

charts/zot/Chart.yaml

@@ -3,4 +3,4 @@ appVersion: v2.1.0
 description: A Helm chart for Kubernetes
 name: zot
 type: application
-version: 0.1.57
+version: 0.1.58

charts/zot/templates/servicemonitor.yaml

@@ -0,0 +1,32 @@
+{{- if and .Values.metrics .Values.metrics.enabled .Values.metrics.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "zot.fullname" . }}
+  labels:
+    app.kubernetes.io/component: metrics
+spec:
+  {{- if .Values.metrics.serviceMonitor.jobLabel }}
+  jobLabel: {{ .Values.metrics.serviceMonitor.jobLabel }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "zot.selectorLabels" . | nindent 6 }}
+  endpoints:
+    - port: zot
+      {{- if .Values.metrics.serviceMonitor.interval }}
+      interval: {{ .Values.metrics.serviceMonitor.interval }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ .Values.metrics.serviceMonitor.scrapeTimeout }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.path }}
+      path: {{ .Values.metrics.serviceMonitor.path }}
+      {{- end }}
+      {{- if .Values.metrics.serviceMonitor.scheme }}
+      scheme: {{ .Values.metrics.serviceMonitor.scheme }}
+      {{- end }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+{{- end }}

charts/zot/values.yaml

@@ -179,3 +179,18 @@ strategy:
 #    maxUnavailable: 25%
 
 podAnnotations: {}
+
+# Metrics configuration
+# NOTE: need enable metric extension in config.json
+metrics:
+  # Start a prometheus exporter
+  enabled: false
+
+  # Prometheus Operator ServiceMonitor configuration
+  serviceMonitor:
+    # Start a ServiceMonitor for Prometheus Operator
+    enabled: false
+    # Specify the interval at which metrics should be scraped
+    interval: "30s"
+    # Specify the path to scrape metrics from
+    path: "/metrics"