Feat/configurable memory limit

charts/karpenter/templates/deployment.yaml

@@ -119,12 +119,17 @@ spec:
                   containerName: {{ include "karpenter.controller.containerName" . }}
                   divisor: 1m
                   resource: requests.cpu
+          {{- if .Values.controller.memoryLimit }}
+            - name: MEMORY_LIMIT
+              value: {{ .Values.controller.memoryLimit | quote }}
+          {{- else }}
             - name: MEMORY_LIMIT
               valueFrom:
                 resourceFieldRef:
                   containerName: {{ include "karpenter.controller.containerName" . }}
                   divisor: "0"
                   resource: limits.memory
+          {{- end }}
             - name: FEATURE_GATES
               value: "ReservedCapacity={{ .Values.settings.featureGates.reservedCapacity }},SpotToSpotConsolidation={{ .Values.settings.featureGates.spotToSpotConsolidation }},NodeRepair={{ .Values.settings.featureGates.nodeRepair }},NodeOverlay={{ .Values.settings.featureGates.nodeOverlay }},StaticCapacity={{ .Values.settings.featureGates.staticCapacity }}"
           {{- with .Values.settings.batchMaxDuration }}

charts/karpenter/values.yaml

@@ -153,6 +153,16 @@ controller:
   #  limits:
   #    cpu: 1
   #    memory: 1Gi
+  # -- Override the MEMORY_LIMIT env var (in bytes). GOMEMLIMIT is set to 90% of this value.
+  # Must be a plain integer representing bytes. Common values:
+  #   512Mi = 536870912
+  #   1Gi   = 1073741824
+  #   2Gi   = 2147483648
+  #   4Gi   = 4294967296
+  # Set to "" (default) to use the container's limits.memory automatically.
+  # Set to "-1" to disable GOMEMLIMIT entirely.
+  memoryLimit: ""
+
   # -- Additional volumeMounts for the controller container.
   extraVolumeMounts: []
   # - name: aws-iam-token