make volume and volume mounts configurable through helm

deploy/chart/templates/daemonset.yaml

@@ -54,6 +54,9 @@ spec:
           volumeMounts:
             - mountPath: /etc/kubernetes
               name: k8s
+            {{- with .Values.volumeMounts}}
+            {{- toYaml . | nindent 12 }}
+            {{- end}}
           env:
             - name: LINODE_API_TOKEN
               valueFrom:
@@ -65,10 +68,13 @@ spec:
                 secretKeyRef:
                   name: {{ if .Values.secretRef }}{{ .Values.secretRef.name | default "ccm-linode" }}{{ else }}"ccm-linode"{{ end }}
                   key: {{ if .Values.secretRef }}{{ .Values.secretRef.regionRef | default "region" }}{{ else }}"region"{{ end }}
-            {{if .Values.env}}
-            {{- toYaml .Values.env | nindent 12 }}
-            {{end}}
+            {{- with .Values.env}}
+            {{- toYaml . | nindent 12 }}
+            {{- end}}
       volumes:
         - name: k8s
           hostPath:
             path: /etc/kubernetes
+        {{- with .Values.volumes}}
+        {{- toYaml . | nindent 8 }}
+        {{- end}}

deploy/chart/values.yaml

@@ -58,6 +58,17 @@ tolerations:
 # This section adds the ability to pass environment variables to adjust CCM defaults
 # https://github.com/linode/linode-cloud-controller-manager/blob/master/cloud/linode/loadbalancers.go
 # LINODE_HOSTNAME_ONLY_INGRESS type bool is supported
-# env:
-  # - name: EXAMPLE_ENV_VAR
-  #   value: "true"
+env:
+   - name: EXAMPLE_ENV_VAR
+     value: "true"
+
+# This section adds the ability to pass volumes to the CCM DaemonSet
+volumes:
+   - name: test-volume
+     emptyDir:
+       sizeLimit: 500Mi
+
+# this section adds the ability to pass volumeMounts to the CCM container
+volumeMounts:
+   - mountPath: /tmp/
+     name: test-volume