Allow configuring of cloudconfig using helm chart values

Author: kylewuolle

charts/aws-cloud-controller-manager/templates/_helpers.tpl

@@ -2,4 +2,6 @@
 {{- .Values.nameOverride }}
 {{- end -}}
 
-
+{{- define "aws-cloud-config.name" -}}
+"aws-cloud-config"
+{{- end }}

charts/aws-cloud-controller-manager/templates/cloudconfigmap.yaml

@@ -0,0 +1,17 @@
+---
+{{- if .Values.cloudConfig.enabled }}
+apiVersion: v1
+data:
+  cloudconfig.cfg: |
+    {{- range $key, $value := .Values.cloudConfig }}
+    {{- if not (eq $key "enabled") }}
+    [{{ camelcase $key }}]
+      {{- range $subKey, $subValue := $value }}
+    {{ $subKey }}={{ $subValue }}
+      {{- end }}
+    {{- end }}
+    {{- end }}
+kind: ConfigMap
+metadata:
+  name: {{- include "aws-cloud-config.name" . }}
+{{- end }}

charts/aws-cloud-controller-manager/templates/daemonset.yaml

@@ -32,28 +32,42 @@ spec:
       hostNetwork: true
       {{- end }}
       securityContext: {{- toYaml .Values.podSecurityContext | nindent 8 }}
-      {{- with .Values.imagePullSecrets }}
-      imagePullSecrets:
-        {{- toYaml . | nindent 8 }}
-      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          {{- $args := .Values.args }}
+          {{- if and (.Values.cloudConfig.enabled) (not (contains  "--cloud-config" (cat $args))) }}
+            {{- $args = append $args "--cloud-config=/etc/cloudconfig.cfg" }}
+          {{- end }}
           args:
-            {{- range .Values.args }}
+            {{- range $args }}
             - {{ . }}
             {{- end }}
           resources:
           {{- toYaml .Values.resources | nindent 12 }}
           env: {{- toYaml .Values.env | nindent 12 }}
           securityContext:
           {{- toYaml .Values.securityContext | nindent 12 }}
-          {{- with .Values.extraVolumeMounts  }}
+          {{- if or (.Values.cloudConfig.enabled) (.Values.extraVolumeMounts) }}
           volumeMounts:
+          {{- if .Values.cloudConfig.enabled }}
+            - name: {{ include "aws-cloud-config.name" . }}
+              mountPath: /etc/cloudconfig.cfg
+              subPath: cloudconfig.cfg
+          {{- end }}
+          {{- with .Values.extraVolumeMounts}}
           {{- toYaml .| nindent 12 }}
           {{- end }}
-      {{- with .Values.extraVolumes  }}
+          {{- end }}
+      {{- if or (.Values.cloudConfig.enabled) (.Values.extraVolumes) }}
       volumes:
+      {{- with .Values.extraVolumes}}
       {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- end }}
+      {{- if .Values.cloudConfig.enabled  }}
+        - name: {{- include "aws-cloud-config.name" . }}
+          configMap:
+            name: {{- include "aws-cloud-config.name" . }}
+      {{- end }}
 ---

charts/aws-cloud-controller-manager/values.yaml

@@ -8,9 +8,6 @@ image:
     repository: registry.k8s.io/provider-aws/cloud-controller-manager
     tag: v1.27.1
 
-# Specify image pull secrets
-imagePullSecrets: []
-
 # nameOverride overrides `cloud-controller-manager.fullname`
 nameOverride: "aws-cloud-controller-manager"
 
@@ -98,18 +95,6 @@ clusterRoleRules:
   - serviceaccounts/token
   verbs:
   - create
-- apiGroups:
-    - authentication.k8s.io
-  resources:
-    - tokenreviews
-  verbs:
-    - create
-- apiGroups:
-    - authorization.k8s.io
-  resources:
-    - subjectaccessreviews
-  verbs:
-    - create
 
 # resources -- Pod resource requests and limits.
 resources:
@@ -153,3 +138,6 @@ roleName: extension-apiserver-authentication-reader
 
 extraVolumes: []
 extraVolumeMounts: []
+
+cloudConfig:
+  enabled: false