chore: Helm chart option to set POD container name (#7384)

Co-authored-by: udhos <udhos>

charts/karpenter/README.md

@@ -44,6 +44,7 @@ cosign verify public.ecr.aws/karpenter/karpenter:1.1.0 \
 | additionalClusterRoleRules | list | `[]` | Specifies additional rules for the core ClusterRole. |
 | additionalLabels | object | `{}` | Additional labels to add into metadata. |
 | affinity | object | `{"nodeAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":{"nodeSelectorTerms":[{"matchExpressions":[{"key":"karpenter.sh/nodepool","operator":"DoesNotExist"}]}]}},"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"topologyKey":"kubernetes.io/hostname"}]}}` | Affinity rules for scheduling the pod. If an explicit label selector is not provided for pod affinity or pod anti-affinity one will be created from the pod selector labels. |
+| controller.containerName | string | `"controller"` | Distinguishing container name (containerName: karpenter-controller). |
 | controller.env | list | `[]` | Additional environment variables for the controller pod. |
 | controller.envFrom | list | `[]` |  |
 | controller.extraVolumeMounts | list | `[]` | Additional volumeMounts for the controller pod. |

charts/karpenter/templates/deployment.yaml

@@ -60,7 +60,7 @@ spec:
       schedulerName: {{ . | quote }}
       {{- end }}
       containers:
-        - name: controller
+        - name: {{ .Values.controller.containerName | default "controller" }}
           securityContext:
             runAsUser: 65532
             runAsGroup: 65532

charts/karpenter/values.yaml

@@ -102,6 +102,8 @@ extraVolumes: []
 #         expirationSeconds: 86400
 #         path: token
 controller:
+  # -- Distinguishing container name (containerName: karpenter-controller).
+  containerName: controller
   image:
     # -- Repository path to the controller image.
     repository: public.ecr.aws/karpenter/controller