chore: bump Kafka versions for 26.7

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - BREAKING: Add required CLI argument and env var to set the image repository used to construct final product image names: `IMAGE_REPOSITORY` (`--image-repository`), eg. `oci.example.org/my/namespace` ([#961]).
+- Add Kafka 3.9.2 and 4.2.1 in tests, docs, getting started guide, etc. ([#973]).
 
 ### Changed
 
@@ -24,6 +25,7 @@ All notable changes to this project will be documented in this file.
 [#961]: https://github.com/stackabletech/kafka-operator/pull/961
 [#968]: https://github.com/stackabletech/kafka-operator/pull/968
 [#971]: https://github.com/stackabletech/kafka-operator/pull/971
+[#973]: https://github.com/stackabletech/kafka-operator/pull/973
 
 ## [26.3.0] - 2026-03-16
 

docs/modules/kafka/examples/getting_started/kafka.yaml

@@ -5,7 +5,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     tls:
       serverSecretClass: null

docs/modules/kafka/examples/kraft_migration/01-setup.yaml

@@ -81,7 +81,7 @@ metadata:
   namespace: kraft-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: zookeeper

docs/modules/kafka/examples/kraft_migration/02-start-controllers.yaml

@@ -6,7 +6,7 @@ metadata:
   namespace: kraft-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: zookeeper

docs/modules/kafka/examples/kraft_migration/03-migrate-metadata.yaml

@@ -6,7 +6,7 @@ metadata:
   namespace: kraft-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: zookeeper
@@ -25,7 +25,7 @@ spec:
         replicas: 3
     configOverrides:
       broker.properties:
-        inter.broker.protocol.version: "3.9" # - Latest value known to Kafka 3.9.1
+        inter.broker.protocol.version: "3.9" # - Latest value known to Kafka 3.9.2
         zookeeper.metadata.migration.enable: "true" # - Enable migration mode so the broker can participate in metadata migration.
         controller.listener.names: "CONTROLLER"
         controller.quorum.bootstrap.servers: "simple-kafka-controller-default-0.simple-kafka-controller-default-headless.kraft-migration.svc.cluster.local:9093,simple-kafka-controller-default-1.simple-kafka-controller-default-headless.kraft-migration.svc.cluster.local:9093,simple-kafka-controller-default-2.simple-kafka-controller-default-headless.kraft-migration.svc.cluster.local:9093"

docs/modules/kafka/examples/kraft_migration/04-migrate-brokers.yaml

@@ -6,7 +6,7 @@ metadata:
   namespace: kraft-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: zookeeper

docs/modules/kafka/examples/kraft_migration/05-kraft-mode.yaml

@@ -6,7 +6,7 @@ metadata:
   namespace: kraft-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: kraft

docs/modules/kafka/examples/mirror_maker/01-setup-source.yaml

@@ -71,7 +71,7 @@ metadata:
   namespace: mm-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: zookeeper

docs/modules/kafka/examples/mirror_maker/02-setup-target.yaml

@@ -41,7 +41,7 @@ metadata:
   namespace: mm-migration
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
     pullPolicy: IfNotPresent
   clusterConfig:
     metadataManager: kraft

docs/modules/kafka/pages/getting_started/first_steps.adoc

@@ -85,7 +85,7 @@ Labels:                   app.kubernetes.io/component=broker
                           app.kubernetes.io/managed-by=listeners.stackable.tech_listener
                           app.kubernetes.io/name=listener
                           app.kubernetes.io/role-group=default
-                          app.kubernetes.io/version=3.9.1-stackable0.0.0-dev
+                          app.kubernetes.io/version=3.9.2-stackable0.0.0-dev
                           stackable.tech/vendor=Stackable
 Annotations:              <none>
 Selector:                 listener.stackable.tech/mnt.9555cbb6f38d4b0ca1771e6d83d28e27=simple-kafka-broker-default-bootstrap

docs/modules/kafka/pages/usage-guide/kraft-controller.adoc

@@ -31,7 +31,7 @@ spec:
   clusterConfig:
     metadataManager: kraft
   image:
-    productVersion: "3.9.1"
+    productVersion: "3.9.2"
   brokers:
     roleGroups:
       default:
@@ -124,7 +124,7 @@ NOTE: Before starting the migration we recommend to reduce producer/consumer ope
 To make the migration step as clear as possible, we'll use a complete working example throughout this guide.
 The example cluster will be kept minimal without any additional configuration.
 
-We'll use Kafka version `3.9.1` for this purpose. This is because this is the last version from the 3.x Kafka series that runs on ZooKeeper mode and is supported by the SDP.
+We'll use Kafka version `3.9.2` for this purpose. This is because this is the last version from the 3.x Kafka series that runs on ZooKeeper mode and is supported by the SDP.
 
 We'll also assign broker ids manually from the beginning to simplify this guide. In a real-workd scenario, you do not have this option at this step because your cluster is already running.
 In a real world-scenario you'll have to collect these ids and configure manual assignment at the second step of the migration.

docs/modules/kafka/pages/usage-guide/security.adoc

@@ -15,7 +15,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     zookeeperConfigMapName: simple-kafka-znode
     tls:
@@ -95,7 +95,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     authentication:
       - authenticationClass: kafka-client-tls # <1>
@@ -140,7 +140,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     authentication:
       - authenticationClass: kafka-client-kerberos # <1>
@@ -184,7 +184,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     authorization:
       opa:
@@ -208,7 +208,7 @@ metadata:
   name: simple-kafka
 spec:
   image:
-    productVersion: 3.9.1
+    productVersion: 3.9.2
   clusterConfig:
     authorization:
       opa:

docs/modules/kafka/partials/supported-versions.adoc

@@ -2,8 +2,10 @@
 // This is a separate file, since it is used by both the direct Kafka documentation, and the overarching
 // Stackable Platform documentation.
 
-* 4.1.1 (experimental) - Requires KRaft, please read on the xref:kafka:usage-guide/kraft-controller.adoc[Kraft migration guide].
-* 3.9.1 (LTS)
+* 4.2.1 (experimental, deprecated) - Requires KRaft, please read on the xref:kafka:usage-guide/kraft-controller.adoc[Kraft migration guide].
+* 4.1.1 (experimental, deprecated) - Requires KRaft, please read on the xref:kafka:usage-guide/kraft-controller.adoc[Kraft migration guide].
+* 3.9.2 (LTS)
+* 3.9.1 (deprecated)
 
 Support for clusters running in Kraft mode (which includes Apache Kafka 4.x.x) is experimental because it has not been thoroughly tested in production environments yet.
 

rust/operator-binary/src/config/jvm.rs

@@ -122,7 +122,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             zookeeperConfigMapName: xyz
           brokers:
@@ -152,7 +152,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             zookeeperConfigMapName: xyz
           brokers:

rust/operator-binary/src/crd/affinity.rs

@@ -44,7 +44,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             zookeeperConfigMapName: xyz
           brokers:

rust/operator-binary/src/crd/listener.rs

@@ -382,7 +382,7 @@ mod tests {
           namespace: default
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             authentication:
               - authenticationClass: kafka-client-tls
@@ -588,7 +588,7 @@ mod tests {
           namespace: default
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             authentication:
               - authenticationClass: kafka-kerberos

rust/operator-binary/src/crd/mod.rs

@@ -615,7 +615,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             zookeeperConfigMapName: xyz
         "#;
@@ -634,7 +634,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             tls:
               serverSecretClass: simple-kafka-server-tls
@@ -659,7 +659,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             tls:
               serverSecretClass: null
@@ -680,7 +680,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           zookeeperConfigMapName: xyz
           clusterConfig:
             tls:
@@ -705,7 +705,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             zookeeperConfigMapName: xyz
         "#;
@@ -724,7 +724,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             tls:
               internalSecretClass: simple-kafka-internal-tls
@@ -745,7 +745,7 @@ mod tests {
           name: simple-kafka
         spec:
           image:
-            productVersion: 3.9.1
+            productVersion: 3.9.2
           clusterConfig:
             tls:
               serverSecretClass: simple-kafka-server-tls
@@ -764,13 +764,13 @@ mod tests {
     }
 
     #[rstest]
-    #[case("3.9.1", None, Ok(MetadataManager::ZooKeeper))]
+    #[case("3.9.2", None, Ok(MetadataManager::ZooKeeper))]
     #[case(
-        "3.9.1",
+        "3.9.2",
         Some(MetadataManager::ZooKeeper),
         Ok(MetadataManager::ZooKeeper)
     )]
-    #[case("3.9.1", Some(MetadataManager::KRaft), Ok(MetadataManager::KRaft))]
+    #[case("3.9.2", Some(MetadataManager::KRaft), Ok(MetadataManager::KRaft))]
     #[case("4.1.1", None, Ok(MetadataManager::KRaft))]
     #[case(
         "4.1.1",

tests/templates/kuttl/upgrade/02-install-kafka.yaml.j2

@@ -32,7 +32,7 @@ spec:
     productVersion: "{{ test_scenario['values']['upgrade_old'] }}"
     pullPolicy: IfNotPresent
   clusterConfig:
-    # Need to set this explicitly because the default would be zookeeper for 3.9.1
+    # Need to set this explicitly because the default would be zookeeper for 3.9.2
     # but we don't want to test zookeeper -> kraft migration here
     metadataManager: kraft
 {% if test_scenario['values']['use-client-auth-tls'] == 'true' %}

tests/test-definition.yaml

@@ -6,20 +6,22 @@
 dimensions:
   - name: kafka-kraft
     values:
-      - 3.9.1
+      - 3.9.2
       - 4.1.1
+      - 4.2.1
   - name: kafka
     values:
       - 3.9.1
+      - 3.9.2
       # Alternatively, if you want to use a custom image, append a comma and the full image name to the product version
       # as in the example below.
-      # - 3.9.1,oci.stackable.tech/sdp/kafka:3.9.1-stackable0.0.0-dev
+      # - 3.9.2,oci.stackable.tech/sdp/kafka:3.9.2-stackable0.0.0-dev
   - name: kafka-latest
     values:
-      - 3.9.1 # Using LTS version here
+      - 3.9.2 # Using LTS version here
       # Alternatively, if you want to use a custom image, append a comma and the full image name to the product version
       # as in the example below.
-      # - 3.9.1,oci.stackable.tech/sdp/kafka:3.9.1-stackable0.0.0-dev
+      # - 3.9.2,oci.stackable.tech/sdp/kafka:3.9.2-stackable0.0.0-dev
   - name: zookeeper
     values:
       - 3.9.4
@@ -31,10 +33,10 @@ dimensions:
       - 1.16.2
   - name: upgrade_old
     values:
-      - 3.9.1
+      - 3.9.2
   - name: upgrade_new
     values:
-      - 4.1.1
+      - 4.2.1
   - name: use-client-tls
     values:
       - "true"