telegraf: Allow passing ENV variables to pod

telegraf-ds/templates/daemonset.yaml

@@ -39,6 +39,9 @@ spec:
           value: "/rootfs/proc"
         - name: "HOST_SYS"
           value: "/rootfs/sys"
+        {{- if .Values.env }}
+          {{- .Values.env | toYaml | trimSuffix "\n" | nindent 8 }}
+        {{- end }}
         volumeMounts:
         - name: varrunutmpro
           mountPath: /var/run/utmp

telegraf-ds/values.yaml

@@ -21,6 +21,12 @@ resources:
 ##
 tolerations: []
 
+## Telegraf accepts environment variables in its configuration
+## ref: https://docs.influxdata.com/telegraf/latest/administration/configuration/#environment-variables
+env: {}
+  # - name: INFLUXDB_DB
+  #   value: "demo"
+
 ## Exposed telegraf configuration
 ## ref: https://docs.influxdata.com/telegraf/v1.8/administration/configuration/
 config:

telegraf-s/templates/deployment.yaml

@@ -23,6 +23,10 @@ spec:
         imagePullPolicy: {{ default "" .Values.image.pullPolicy | quote }}
         resources:
 {{ toYaml .Values.resources | indent 10 }}
+        {{- if .Values.env }}
+        env:
+        {{- .Values.env | toYaml | trimSuffix "\n" | nindent 8 }}
+        {{- end }}
         volumeMounts:
         - name: config
           mountPath: /etc/telegraf

telegraf-s/values.yaml

@@ -33,6 +33,12 @@ nodeSelector: {}
 ##
 tolerations: []
 
+## Telegraf accepts environment variables in its configuration
+## ref: https://docs.influxdata.com/telegraf/latest/administration/configuration/#environment-variables
+env: {}
+  # - name: INFLUXDB_DB
+  #   value: "demo"
+
 ## Affinity for pod assignment
 ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
 ##