Merge pull request #55 from xhensiladoda/feat-envs-from-field-path

feat(chart): support env variables from fieldPath (feat for #54)

Author: raffis

chart/prometheus-mongodb-query-exporter/Chart.yaml

@@ -15,4 +15,4 @@ keywords:
 name: prometheus-mongodb-query-exporter
 sources:
 - https://github.com/raffis/mongodb-query-exporter
-version: 2.0.1
+version: 2.1.0

chart/prometheus-mongodb-query-exporter/templates/deployment.yaml

@@ -53,6 +53,12 @@ spec:
         - secretRef:
             name: {{ .Values.envFromSecret }}
         {{- end }}
+        {{- range $key, $value := .Values.extraEnvFieldPath }}
+          - name: {{ $key }}
+            valueFrom:
+              fieldRef:
+                fieldPath: {{ $value }}
+          {{- end }}
         image: "{{ .Values.image.repository }}:{{ default .Chart.AppVersion .Values.image.tag }}"
         imagePullPolicy: {{ .Values.image.pullPolicy }}
         args:

chart/prometheus-mongodb-query-exporter/values.yaml

@@ -127,6 +127,13 @@ envFromSecret: ""
 ##     key: password
 extraEnvSecrets: {}
 
+## A list of environment variables from fieldPath refs that will expose pod information to the container
+## This can be useful for enriching the custom metrics with pod information
+## example:
+## extraEnvFieldPath:
+##   POD_NAME: metadata.name
+extraEnvFieldPath: {}
+
 securityContext:
   allowPrivilegeEscalation: false
   capabilities: