[stable/prometheus-mongodb-exporter] Add MONGODB_URI env variable secret (#13959)

* Add MONGODB_URI env variable secret

Signed-off-by: Dagenais, Philippe <pdagenais@nuglif.com>

* Bump chart version

Signed-off-by: Dagenais, Philippe <pdagenais@nuglif.com>

* Use mongodb.uri value, remove the command line argument

Signed-off-by: Dagenais, Philippe <pdagenais@nuglif.com>

stable/prometheus-mongodb-exporter/Chart.yaml

@@ -13,4 +13,4 @@ maintainers:
 name: prometheus-mongodb-exporter
 sources:
 - https://github.com/percona/mongodb_exporter
-version: 2.0.1
+version: 2.1.0

stable/prometheus-mongodb-exporter/README.md

@@ -16,7 +16,7 @@ This command deploys the MongoDB Exporter with the default configuration. The [c
 ## Using the Chart
 
 To use the chart, ensure the `mongodb.uri` is populated with a valid [MongoDB URI](https://docs.mongodb.com/manual/reference/connection-string).
-If the MongoDB server requires authentication, credentials should be populated in the connection string as well. The MongoDB Exporter supports 
+If the MongoDB server requires authentication, credentials should be populated in the connection string as well. The MongoDB Exporter supports
 connecting to either a MongoDB replica set member, shard, or standalone instance.
 
 The chart comes with a ServiceMonitor for use with the [Prometheus Operator](https://github.com/helm/charts/tree/master/stable/prometheus-operator).

stable/prometheus-mongodb-exporter/templates/deployment.yaml

@@ -25,8 +25,13 @@ spec:
     spec:
       containers:
       - name: mongodb-exporter
-        {{- if .Values.env }}
         env:
+          - name: MONGODB_URI
+            valueFrom:
+              secretKeyRef:
+                name: {{ include "prometheus-mongodb-exporter.fullname" . }}
+                key: mongodb-uri
+        {{- if .Values.env }}
         {{- range $key, $value := .Values.env }}
           - name: "{{ $key }}"
             value: "{{ $value }}"
@@ -35,7 +40,6 @@ spec:
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
         imagePullPolicy: {{ .Values.image.pullPolicy }}
         args:
-        - --mongodb.uri={{ required "A MongoDB URI is required" .Values.mongodb.uri }}
         - --web.listen-address={{ printf ":%s" .Values.port }}
         {{- toYaml .Values.extraArgs | nindent 8 }}
         ports:

stable/prometheus-mongodb-exporter/templates/secret.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "prometheus-mongodb-exporter.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "prometheus-mongodb-exporter.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    helm.sh/chart: {{ include "prometheus-mongodb-exporter.chart" . }}
+type: Opaque
+data:
+  mongodb-uri: {{ required "A MongoDB URI is required" .Values.mongodb.uri | b64enc }}