helm: provide an option to set extra volume tags

aws-ebs-csi-driver/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "0.4.0"
 name: aws-ebs-csi-driver
 description: A Helm chart for AWS EBS CSI Driver
-version: 0.1.0
+version: 0.2.0
 kubeVersion: ">=1.13.0-0"
 home: https://github.com/kubernetes-sigs/aws-ebs-csi-driver
 sources:

aws-ebs-csi-driver/templates/_helpers.tpl

@@ -43,3 +43,16 @@ app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{- end -}}
+
+{{/*
+Convert the `--extra-volume-tags` command line arg from a map.
+*/}}
+{{- define "aws-ebs-csi-driver.extra-volume-tags" -}}
+{{- $result := dict "pairs" (list) -}}
+{{- range $key, $value := .Values.extraVolumeTags -}}
+{{- $noop := printf "%s=%s" $key $value | append $result.pairs | set $result "pairs" -}}
+{{- end -}}
+{{- if gt (len $result.pairs) 0 -}}
+- --extra-volume-tags={{- join "," $result.pairs -}}
+{{- end -}}
+{{- end -}}

aws-ebs-csi-driver/templates/manifest.yaml

@@ -213,10 +213,11 @@ spec:
       containers:
         - name: ebs-plugin
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-          args :
+          args:
             - --endpoint=$(CSI_ENDPOINT)
             - --logtostderr
             - --v=5
+            {{ include "aws-ebs-csi-driver.extra-volume-tags" . }}
           env:
             - name: CSI_ENDPOINT
               value: unix:///var/lib/csi/sockets/pluginproxy/csi.sock

aws-ebs-csi-driver/values.yaml

@@ -39,3 +39,10 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+# Extra volume tags to attach to each dynamically provisioned volume.
+# ---
+# extraVolumeTags:
+#   key1: value1
+#   key2: value2
+extraVolumeTags: {}