feat(metrics): ServiceMonitors for arango/redpanda

Author: awlayton

charts/oada/templates/_helpers.tpl

@@ -50,7 +50,7 @@ app.kubernetes.io/part-of: oada
   {{ .Values.kafka.brokers | join "," | default $brokers }}
 {{- end -}}
 
-{{/* Whether add Prometheus monitors */}}
+{{/* Whether to add Prometheus monitors */}}
 {{- define "oada.prometheus" -}}
   {{ .Values.prometheus | default (.Capabilities.APIVersions.Has "monitoring.coreos.com/v1") }}
 {{- end -}}

charts/oada/templates/arangodb.yaml

@@ -12,6 +12,8 @@ spec:
   image: {{ .Values.arangodb.image }}:{{ .Values.arangodb.tag }}
   mode: Single
   environment: {{ .Values.global.development | ternary "Development" "Production" }}
+  metrics:
+    enabled: {{ include "oada.prometheus" . }}
   externalAccess:
     {{/* Disable external access for Production */}}
     type: {{ .Values.global.development | ternary "Auto" "None" }}

charts/oada/templates/deployment.yaml

@@ -154,6 +154,8 @@ spec:
       app.kubernetes.io/instance: {{ $.Release.Name }}
   podMetricsEndpoints:
   - port: prometheus
+  namespaceSelector:
+    any: false
 {{- end }}
 ---
 {{ end -}}

charts/oada/templates/redpanda.yaml

@@ -42,4 +42,25 @@ spec:
           enabled: true
       {{- end }}
     developerMode: {{ .Values.global.development }}
+{{- if eq (include "oada.prometheus" $) "true" }}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  namespace: {{ .Release.Namespace }}
+  name: redpanda-{{ .Release.Name }}
+  labels:
+    app.kubernetes.io/name: redpanda
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    {{- include "oada.chart.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: redpanda
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  endpoints:
+  - port: admin
+  namespaceSelector:
+    any: false
+{{- end }}
 {{- end }}