Update supported Kubernetes version to 1.25+

.azure/scripts/setup-helm.sh

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 set -x
 
-TEST_HELM3_VERSION=${TEST_HELM3_VERSION:-'v3.15.1'}
-TEST_HELM_UNITTEST_VERSION=${TEST_HELM_UNITTEST_VERSION:-'v0.5.1'}
+TEST_HELM3_VERSION=${TEST_HELM3_VERSION:-'v3.15.4'}
+TEST_HELM_UNITTEST_VERSION=${TEST_HELM_UNITTEST_VERSION:-'v0.5.2'}
 
 function install_helm3 {
     export HELM_INSTALL_DIR=/usr/bin

.azure/scripts/setup-kind.sh

@@ -3,7 +3,7 @@ set -xe
 
 rm -rf ~/.kube
 
-KUBE_VERSION=${KUBE_VERSION:-1.23.0}
+KUBE_VERSION=${KUBE_VERSION:-1.25.0}
 COPY_DOCKER_LOGIN=${COPY_DOCKER_LOGIN:-"false"}
 
 DEFAULT_CLUSTER_MEMORY=$(free -m | grep "Mem" | awk '{print $2}')

.azure/scripts/setup-kubernetes.sh

@@ -3,7 +3,7 @@ set -xe
 
 rm -rf ~/.kube
 
-KUBE_VERSION=${KUBE_VERSION:-1.23.0}
+KUBE_VERSION=${KUBE_VERSION:-1.25.0}
 MINIKUBE_REGISTRY_IMAGE=${REGISTRY_IMAGE:-"registry"}
 COPY_DOCKER_LOGIN=${COPY_DOCKER_LOGIN:-"false"}
 

.azure/templates/steps/default_variables.yaml

@@ -22,8 +22,7 @@ variables:
   repo_slug: $(Build.Repository.Name)
   commit_message: $(Build.SourceVersionMessage)
   test_cluster: minikube
-  test_kubectl_version: v1.23.0
-  test_helm_version: v2.17.0
+  test_kubectl_version: v1.25.0
   strimzi_default_log_level: DEBUG
   operator_image_pull_policy: IfNotPresent
   components_image_pull_policy: IfNotPresent

.azure/templates/steps/prerequisites/install_helm.yaml

@@ -2,5 +2,5 @@ steps:
   - bash: ".azure/scripts/setup-helm.sh"
     displayName: "Install Helm"
     env:
-      TEST_HELM3_VERSION: v3.15.1
-      TEST_HELM_UNITTEST_VERSION: v0.5.1
+      TEST_HELM3_VERSION: v3.15.4
+      TEST_HELM_UNITTEST_VERSION: v0.5.2

.azure/templates/steps/prerequisites/install_minikube.yaml

@@ -3,5 +3,5 @@ steps:
     displayName: "Setup Minikube cluster"
     env:
       TEST_CLUSTER: minikube
-      TEST_KUBECTL_VERSION: v1.23.0
-      TEST_MINIKUBE_VERSION: v1.32.0
+      TEST_KUBECTL_VERSION: v1.25.0
+      TEST_MINIKUBE_VERSION: v1.33.1

CHANGELOG.md

@@ -6,6 +6,8 @@
 
 ### Changes, deprecations and removals
 
+* **From Strimzi 0.44.0 on, we support only Kubernetes 1.25 and newer.**
+  Kubernetes 1.23 and 1.24 are not supported anymore.
 * When finalizers are enabled (default), the Topic Operator will no longer restore finalizers on unmanaged `KafkaTopic` resources if they are removed, aligning the behavior with paused topics, where finalizers are also not restored.
   This change matches user expectations.
 

api/pom.xml

@@ -233,7 +233,7 @@
                                 <argument>io.strimzi.crdgenerator.DocGenerator</argument>
                                 <argument>--linker</argument>
                                 <argument>io.strimzi.crdgenerator.KubeLinker</argument>
-                                <argument>https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/</argument>
+                                <argument>https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.25/</argument>
                                 <argument>modules/appendix_crds.adoc</argument>
                                 <argument>io.strimzi.api.kafka.model.kafka.Kafka</argument>
                                 <argument>io.strimzi.api.kafka.model.connect.KafkaConnect</argument>

api/src/main/java/io/strimzi/platform/KubernetesVersion.java

@@ -13,9 +13,9 @@ public class KubernetesVersion implements Comparable<KubernetesVersion> {
 
     // Notable Kubernetes versions => this includes the minimal supported version and for example also any Kubernetes
     // versions from some features are supported.
-    public static final KubernetesVersion V1_23 = new KubernetesVersion(1, 23);
+    public static final KubernetesVersion V1_25 = new KubernetesVersion(1, 25);
 
-    public static final KubernetesVersion MINIMAL_SUPPORTED_VERSION = V1_23;
+    public static final KubernetesVersion MINIMAL_SUPPORTED_VERSION = V1_25;
     public static final int MINIMAL_SUPPORTED_MAJOR = MINIMAL_SUPPORTED_VERSION.major;
     public static final int MINIMAL_SUPPORTED_MINOR = MINIMAL_SUPPORTED_VERSION.minor;
 

crd-generator/src/main/java/io/strimzi/crdgenerator/annotations/Crd.java

@@ -142,7 +142,7 @@ Subresources subresources() default @Subresources(
 
             /**
              * The scale subresource of a custom resources that this is the definition for.
-             * @see <a href="https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#customresourcesubresourcescale-v1beta1-apiextensions-k8s-io">Kubernetes 1.23 API documtation</a>
+             * @see <a href="https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.25/#customresourcesubresourcescale-v1-apiextensions-k8s-io">Kubernetes 1.25 API documtation</a>
              */
             @interface Scale {
                 /**

documentation/shared/attributes.adoc

@@ -20,7 +20,7 @@
 :UpgradeGuide: link:https://strimzi.io/docs/operators/0.24.0/deploying.html#assembly-upgrade-resources-str[Strimzi 0.24.0 upgrade documentation^]
 
 // Kubernetes versions
-:KubernetesVersion: 1.23 and later
+:KubernetesVersion: 1.25 and later
 
 // Kafka upgrade attributes used in kafka upgrades section
 :DefaultKafkaVersion: 3.8.0
@@ -80,7 +80,7 @@
 :K8sMeaningOfMemory: link:https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-memory[Meaning of memory^]
 :K8sManagingComputingResources: link:https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/[Managing Compute Resources for Containers^]
 :K8sLivenessReadinessProbes: link:https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/[Configure Liveness and Readiness Probes^]
-:K8sNetworkPolicyPeerAPI: link:https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#networkpolicypeer-v1-networking-k8s-io[NetworkPolicyPeer API reference^]
+:K8sNetworkPolicyPeerAPI: link:https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.25/#networkpolicypeer-v1-networking-k8s-io[NetworkPolicyPeer API reference^]
 :K8sImagePullPolicies: link:https://kubernetes.io/docs/concepts/containers/images/#updating-images[Disruptions^]
 :K8sCRDs: link:https://kubernetes.io/docs/tasks/access-kubernetes-api/custom-resources/custom-resource-definitions/[Extend the Kubernetes API with CustomResourceDefinitions^]
 :K8sResizingPersistentVolumesUsingKubernetes: link:https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/[Resizing Persistent Volumes using Kubernetes^]

packaging/helm-charts/helm3/strimzi-kafka-operator/README.md

@@ -9,8 +9,8 @@ Upgrading to Strimzi 0.32 and newer directly from Strimzi 0.22 and earlier is no
 Please follow the [documentation](https://strimzi.io/docs/operators/latest/full/deploying.html#assembly-upgrade-str) for more details.
 
 **!!! IMPORTANT !!!**
-Strimzi 0.43.0 (and any of its patch releases) is the last Strimzi version with support for Kubernetes 1.23 and 1.24.
-From Strimzi 0.44.0 on, Strimzi will support only Kubernetes 1.25 and newer.
+From Strimzi 0.44.0 on, we support only Kubernetes 1.25 and newer.
+Kubernetes 1.23 and 1.24 are not supported anymore.
 
 ## Introduction
 
@@ -60,7 +60,7 @@ Strimzi is licensed under the [Apache License, Version 2.0](https://github.com/s
 
 ## Prerequisites
 
-- Kubernetes 1.23+
+- Kubernetes 1.25+
 
 ## Installing the Chart
 

systemtest/scripts/results_info.sh

@@ -4,7 +4,7 @@ RESULTS_PATH=${1}
 TEST_CASE=${2}
 TEST_PROFILE=${3}
 BUILD_ID=${4:-0}
-KUBE_VERSION=${5:-1.23.0}
+KUBE_VERSION=${5:-1.25.0}
 TEST_ONLY=${6:-''}
 TEST_COUNT_RUNNING_IN_PARALLEL=${7:-''}
 EXCLUDED_GROUPS=${8:-''}