RADAR-base · pvannierop · Nov 11, 2025
diff --git a/charts/radar-kafka/Chart.yaml b/charts/radar-kafka/Chart.yaml
@@ -4,7 +4,7 @@ apiVersion: v2
 appVersion: 3.9.0
 description: "Apache Kafka for RADAR-base using the Strimzi Operator"
 name: radar-kafka
-version: 0.3.0
+version: 0.5.0
 keywords:
   - kafka
   - queue

diff --git a/charts/radar-kafka/README.md b/charts/radar-kafka/README.md
@@ -3,7 +3,7 @@
 # radar-kafka
 [![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/radar-kafka)](https://artifacthub.io/packages/helm/radar-base/radar-kafka)
 
-![Version: 0.3.0](https://img.shields.io/badge/Version-0.3.0-informational?style=flat-square) ![AppVersion: 3.9.0](https://img.shields.io/badge/AppVersion-3.9.0-informational?style=flat-square)
+![Version: 0.5.0](https://img.shields.io/badge/Version-0.5.0-informational?style=flat-square) ![AppVersion: 3.9.0](https://img.shields.io/badge/AppVersion-3.9.0-informational?style=flat-square)
 
 Apache Kafka for RADAR-base using the Strimzi Operator
 
@@ -60,19 +60,24 @@ Consult the [documentation](https://github.com/lsst-sqre/strimzi-registry-operat
 | strimzi-registry-operator | object | `{"clusterName":"radar","operatorNamespace":"default"}` | Values for schema registry operator ref: https://github.com/lsst-sqre/strimzi-registry-operator |
 | strimzi-registry-operator.clusterName | string | `"radar"` | Keep in sync with 'fullnameOverride' |
 | strimzi-registry-operator.operatorNamespace | string | `"default"` | Keep in sync with namespace used by deployment |
-| kafka | object | `{"cruiseControl":{"addRebalanceTemplate":true,"enabled":false,"goals":[],"skipHardGoalCheck":true},"insyncReplicas":2,"metadataVersion":"3.9-IV0","partitions":9,"podSecurityContext":{},"replicas":3,"replicationFactor":3,"resources":{"requests":{"cpu":"100m","memory":"1Gi"}},"securityContext":{},"storage":{"size":"10Gi"}}` | Values for Kafka cluster deployed by Strimzi kafka operator |
+| kafka | object | `{"cruiseControl":{"addRebalanceTemplate":true,"enabled":false,"goals":[],"javaOptions":{"Xms":"128m","Xmx":"256m"},"skipHardGoalCheck":true},"insyncReplicas":2,"javaOptions":{"Xms":"512m","Xmx":"1G"},"metadataVersion":"3.9-IV0","nodePool":{"jvmOptions":{"Xms":"512m","Xmx":"1G"},"resources":{"limits":{"cpu":1,"memory":"2Gi"},"requests":{"cpu":"100m","memory":"1Gi"}}},"partitions":9,"podSecurityContext":{},"replicas":3,"replicationFactor":3,"resources":{"limits":{"cpu":1,"memory":"2Gi"},"requests":{"cpu":"100m","memory":"1Gi"}},"securityContext":{},"storage":{"size":"10Gi"},"topicOperator":{"jvmOptions":{"Xms":"64m","Xmx":"128m"}},"userOperator":{"jvmOptions":{"Xms":"64m","Xmx":"128m"}}}` | Values for Kafka cluster deployed by Strimzi kafka operator |
 | kafka.replicas | int | `3` | Number of Kafka brokers |
 | kafka.replicationFactor | int | `3` | Number of replicas for Kafka topics |
 | kafka.insyncReplicas | int | `2` | Number of in-sync kafka broker replicas |
 | kafka.partitions | int | `9` | Number of topic data partitions. Rule of thumb: 3 times the number of brokers. Headroom is used for future upscale of brokers. ref: https://learn.conduktor.io/kafka/kafka-topics-choosing-the-replication-factor-and-partitions-count/ |
 | kafka.metadataVersion | string | `"3.9-IV0"` | Metadata API version. Keep in sync with appVersion |
 | kafka.storage | object | `{"size":"10Gi"}` | Storage size for Kafka pods |
-| kafka.resources | object | `{"requests":{"cpu":"100m","memory":"1Gi"}}` | Resource requests for Kafka pods |
-| kafka.cruiseControl | object | `{"addRebalanceTemplate":true,"enabled":false,"goals":[],"skipHardGoalCheck":true}` | Config for the Cruise Control rebalancer (https://github.com/linkedin/cruise-control) |
+| kafka.resources.requests | object | `{"cpu":"100m","memory":"1Gi"}` | Resource requests for Kafka pods |
+| kafka.resources.limits | object | `{"cpu":1,"memory":"2Gi"}` | Resource limits for Kafka pods |
+| kafka.javaOptions | object | `{"Xms":"512m","Xmx":"1G"}` | JVM options for Kafka pods |
+| kafka.nodePool.resources.requests | object | `{"cpu":"100m","memory":"1Gi"}` | Resource requests for Kafka pods |
+| kafka.nodePool.resources.limits | object | `{"cpu":1,"memory":"2Gi"}` | Resource limits for Kafka pods |
+| kafka.cruiseControl | object | `{"addRebalanceTemplate":true,"enabled":false,"goals":[],"javaOptions":{"Xms":"128m","Xmx":"256m"},"skipHardGoalCheck":true}` | Config for the Cruise Control rebalancer (https://github.com/linkedin/cruise-control) |
 | kafka.cruiseControl.enabled | bool | `false` | Deploy the Cruise Control rebalancer operator. |
 | kafka.cruiseControl.addRebalanceTemplate | bool | `true` | Add a KafkaRebalance template CRD. Note that this does not automatically rebalance the cluster. For rebalancing, you need to create a KafkaRebalance resource using the template. |
 | kafka.cruiseControl.goals | list | `[]` | Goals for the Cruise Control rebalancer. If left empty, the default goals are used (see: https://github.com/linkedin/cruise-control#goals). |
 | kafka.cruiseControl.skipHardGoalCheck | bool | `true` | Skip hard goal check by Cruise Control rebalancer. |
+| kafka.cruiseControl.javaOptions | object | `{"Xms":"128m","Xmx":"256m"}` | JVM options for Cruise Control pods |
 | kafka.podSecurityContext | object | `{}` | Security Context for Kafka pods ref: https://strimzi.io/docs/operators/latest/deploying#assembly-security-providers-str |
 | kafka.securityContext | object | `{}` | Security Context for Kafka containers ref: https://strimzi.io/docs/operators/latest/deploying#assembly-security-providers-str |
 | schema-registry | object | check `values.yaml` | Values for schema registry deployed by strimzi-registry-operator ref: https://github.com/lsst-sqre/strimzi-registry-operator |
diff --git a/charts/radar-kafka/templates/kafka.yaml b/charts/radar-kafka/templates/kafka.yaml
@@ -25,6 +25,13 @@ spec:
       default.replication.factor: {{ $topicReplicationFactor }}
       min.insync.replicas: {{ $insyncReplicas }}
       num.partitions: {{ $topicPartitions }}
+    {{- if .Values.kafka.javaOptions }}
+    jvmOptions: {{ .Values.kafka.javaOptions | toYaml | nindent 6 }}
+    {{- end }}
+    {{- if .Values.kafka.resources }}
+    resources:
+      {{ .Values.kafka.resources | toYaml | indent 4 | trim }}
+    {{- end }}
     listeners:
       - name: plain
         port: 9092
@@ -71,10 +78,23 @@ spec:
       - mode: remove-brokers
         template:
           name: {{ template "common.names.fullname" . }}-rebalance-template
+    {{- if .values.kafka.cruiseControl.javaOptions }}
+    jvmOptions: {{ .values.kafka.cruiseControl.javaOptions | toYaml | nindent 6 }}
+    {{- end }}
   {{- end }}
   kafkaExporter:
     {{- toYaml .Values.metrics.kafkaExporter | nindent 4 }}
   {{- end }}
   entityOperator:
-    topicOperator: {}
-    userOperator: {}
+    topicOperator:
+      {{- if .Values.kafka.topicOperator.jvmOptions }}
+      jvmOptions: {{ .Values.kafka.topicOperator.jvmOptions | toYaml | nindent 8 }}
+      {{- else }}
+      {}
+      {{- end }}
+    userOperator:
+      {{- if .Values.kafka.userOperator.jvmOptions }}
+      jvmOptions: {{ .Values.kafka.userOperator.jvmOptions | toYaml | nindent 8 }}
+      {{- else }}
+      {}
+      {{- end }}
diff --git a/charts/radar-kafka/templates/nodepool.yaml b/charts/radar-kafka/templates/nodepool.yaml
@@ -12,9 +12,12 @@ spec:
   roles:
     - controller
     - broker
-  {{- if .Values.kafka.resources }}
+  {{- if .Values.kafka.nodePool.javaOptions }}
+  jvmOptions: {{ .Values.kafka.nodePool.javaOptions | toYaml | nindent 6 }}
+  {{- end }}
+  {{- if .Values.kafka.nodePool.resources }}
   resources:
-    {{ .Values.kafka.resources | toYaml | indent 4 | trim }}
+    {{ .Values.kafka.nodePool.resources | toYaml | indent 4 | trim }}
   {{- end }}
   storage:
     type: jbod

diff --git a/charts/radar-kafka/values.yaml b/charts/radar-kafka/values.yaml
@@ -67,11 +67,44 @@ kafka:
   storage:
     size: 10Gi
 
-  # -- Resource requests for Kafka pods
   resources:
+    # -- Resource requests for Kafka pods
     requests:
       cpu: 100m
       memory: 1Gi
+    # -- Resource limits for Kafka pods
+    limits:
+      cpu: 1
+      memory: 2Gi
+
+  # -- JVM options for Kafka pods
+  javaOptions:
+    Xms: 512m
+    Xmx: 1G
+
+  nodePool:
+    jvmOptions:
+      Xms: 512m
+      Xmx: 1G
+    resources:
+      # -- Resource requests for Kafka pods
+      requests:
+        cpu: 100m
+        memory: 1Gi
+      # -- Resource limits for Kafka pods
+      limits:
+        cpu: 1
+        memory: 2Gi
+
+  userOperator:
+    jvmOptions:
+      Xms: 64m
+      Xmx: 128m
+
+  topicOperator:
+    jvmOptions:
+      Xms: 64m
+      Xmx: 128m
 
   # -- Config for the Cruise Control rebalancer (https://github.com/linkedin/cruise-control)
   cruiseControl:
@@ -85,6 +118,10 @@ kafka:
     goals: []
     # -- Skip hard goal check by Cruise Control rebalancer.
     skipHardGoalCheck: true
+    # -- JVM options for Cruise Control pods
+    javaOptions:
+      Xms: 128m
+      Xmx: 256m
 
   # -- Security Context for Kafka pods
   # ref: https://strimzi.io/docs/operators/latest/deploying#assembly-security-providers-str