[telegraf-ds] add custom volumes and mountPoints support (#446)

charts/telegraf-ds/Chart.yaml

 apiVersion: v1
 name: telegraf-ds
-version: 1.0.33
+version: 1.0.34
 appVersion: 1.22.0
 deprecated: false
 description: Telegraf is an agent written in Go for collecting, processing, aggregating, and writing metrics.

charts/telegraf-ds/templates/daemonset.yaml

@@ -52,6 +52,9 @@ spec:
         {{- end }}
         - name: config
           mountPath: /etc/telegraf
+        {{- if .Values.mountPoints }}
+{{ toYaml .Values.mountPoints | indent 8 }}
+        {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml . | indent 8 }}
@@ -80,6 +83,9 @@ spec:
       - name: config
         configMap:
           name:  {{ include "telegraf.fullname" . }}
+      {{- if .Values.volumes }}
+{{ toYaml .Values.volumes | indent 6 }}
+      {{- end }}
       hostNetwork: {{ default false .Values.hostNetwork }}
       {{- if .Values.dnsPolicy }}
       dnsPolicy: {{ .Values.dnsPolicy }}

charts/telegraf-ds/values.yaml

@@ -44,6 +44,16 @@ env:
   - name: "HOST_MOUNT_PREFIX"
     value: "/hostfs"
 
+## Add custom volumes and mountPoints
+# volumes:
+# - name: telegraf-output-influxdb2
+#   configMap:
+#     name: "telegraf-output-influxdb2"
+# mountPoints:
+# - name: telegraf-output-influxdb2
+#   mountPath: /etc/telegraf/conf.d
+#   subPath: influxdb2.conf
+
 ## Tolerations for pod assignment
 ## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
 ##