Prom metrics

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog 
 # 
+## 0.2.6 October 22, 2019
+- Add a prometheus exporter sidecar
+
 ## 0.2.5: August 30, 2019
 - __Potentially breaking__: Add release namespace to all resources to work with `helm template`
 See https://github.com/helm/helm/issues/5465 for more information.

stable/eventstore/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 description: A Helm chart for Kubernetes EventStore.
 name: eventstore
 home: https://eventstore.org/
-version: 0.2.5
+version: 0.2.6
 appVersion: 4.1.1-hotfix1
 keywords:
   - eventstore

stable/eventstore/templates/eventstore-statefulset.yaml

@@ -22,14 +22,17 @@ spec:
     metadata:
       annotations:
         checksum/config: {{ include (print $.Template.BasePath "/eventstore-configmap.yaml") . | sha256sum }}
+      {{- if .Values.metrics.enabled }}
+        prometheus.io/scrape: "true"
+        prometheus.io/port: {{ .Values.metrics.port | quote }}
+      {{- end }}
+      {{- if .Values.podAnnotations }}
+{{ toYaml .Values.podAnnotations | indent 8 }}
+      {{- end }}
       labels:
         app.kubernetes.io/name: {{ include "eventstore.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
         app.kubernetes.io/component: database
-      {{- if .Values.podAnnotations }}
-      annotations:
-{{ toYaml .Values.podAnnotations | indent 8 }}
-      {{- end }}
     spec:      
       nodeSelector:
 {{ toYaml .Values.nodeSelector | indent 8 }}
@@ -44,6 +47,20 @@ spec:
       {{- end}}
       {{- end }}
       containers:
+      {{- if .Values.metrics.enabled }}
+        - name: prometheus-exporter
+          image: marcinbudny/eventstore_exporter:0.7.0
+          imagePullPolicy: {{ .Values.imagePullPolicy }}
+          env:
+            - name: EVENTSTORE_USER
+              value: admin
+            - name: EVENTSTORE_PASSWORD
+              value: {{- if .Values.admin.password }} {{- .Values.admin.password }} {{- else }} changeit {{- end }}
+            - name: PORT
+              value: {{ .Values.metrics.port | quote }}
+            - name: CLUSTER_MODE
+              value: {{- if and .Values.extIp (gt (.Values.clusterSize | float64) 1.0) }} cluster {{- else }} single {{- end }}
+      {{- end }}
         - name: {{ .Chart.Name }}
           image: "{{ .Values.image }}:{{ .Values.imageTag }}"
           imagePullPolicy: {{ .Values.imagePullPolicy }}

stable/eventstore/values.yaml

@@ -124,6 +124,12 @@ persistence:
   mountPath: /var/lib/eventstore
   annotations: {}
 
+## Export prometheus metrics
+metrics:
+  enabled: false
+  ## The port the exporter sidecar will expose its metrics on
+  port: 9448
+
 resources: {}
   ## If you want to specify resources, uncomment the following
   ## lines, adjust them as necessary, and remove the curly braces after 'resources:'.