feat(helm): support environment variable configuration

This change allows users to define environment variables in values.yaml,
which are then injected into the container spec in deployment.yaml.

Signed-off-by: Tsubasa Watanabe <[email protected]>

Author: ttsuuubasa

charts/karpenter/templates/deployment.yaml

@@ -40,8 +40,68 @@ spec:
           {{- end }}
           ports:
             - name: http-metrics
-              containerPort: 8080
+              containerPort: {{ .Values.metricsPort.port }}
               protocol: TCP
+            - name: http-health
+              containerPort: {{ .Values.healthProbePort.port }}
+              protocol: TCP
+          env:
+          {{- with .Values.env.batchIdleDuration }}
+            - name: BATCH_IDLE_DURATION
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.batchMaxDuration }}
+            - name: BATCH_MAX_DURATION
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.clusterAPICertificateAuthorityData }}
+            - name: CLUSTER_API_CERTIFICATE_AUTHORITY_DATA
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.clusterAPIKubeconfig }}
+            - name: CLUSTER_API_KUBECONFIG
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.clusterAPISkipTLSVerify }}
+            - name: CLUSTER_API_SKIP_TLS_VERIFY
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.clusterAPIToken }}
+            - name: CLUSTER_API_TOKEN
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.env.clusterAPIURL }}
+            - name: CLUSTER_API_URL
+              value: "{{ . }}"
+          {{- end }}
+            - name: HEALTH_PROBE_PORT
+              value: "{{ .Values.healthProbePort.port }}"
+          {{- with .Values.env.karpenterService }}
+            - name: KARPENTER_SERVICE
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.logLevel }}
+            - name: LOG_LEVEL
+              value: "{{ . }}"
+          {{- end }}
+          {{- with .Values.logOutputPaths }}
+            - name: LOG_OUTPUT_PATHS
+              value: "{{ join "," . }}"
+          {{- end }}
+          {{- with .Values.logErrorOutputPaths }}
+            - name: LOG_ERROR_OUTPUT_PATHS
+              value: "{{ join "," . }}"
+          {{- end }}
+          {{- with .Values.env.memoryLimit }}
+            - name: MEMORY_LIMIT
+              value: "{{ . }}"
+          {{- end }}
+            - name: METRICS_PORT
+              value: "{{ .Values.metricsPort.port }}"
+          {{- with .Values.env.preferencePolicy}}
+            - name: PREFERENCE_POLICY
+              value: "{{ . }}"
+          {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

charts/karpenter/values.yaml

@@ -21,6 +21,25 @@ securityContext:
 # -- Resources for the controller container
 resources: { }
 
+# -- Port for the health probe
+healthProbePort:
+  port: 8081
+# -- Port for the metrics endpoint
+metricsPort:
+  port: 8080
+
+# -- Environment variables for the controller container
+env: { }
+
+# -- Log level for the controller, default is "info"
+logLevel: info
+# -- Log output paths for the controller, default is "stdout"
+logOutputPaths:
+  - stdout
+# -- Log error output paths for the controller, default is "stderr"
+logErrorOutputPaths:
+  - stderr
+
 # -- Node selectors to schedule the pod to nodes with labels
 nodeSelector: { }