Examples with KafkaResources.kafkaStatefulSetName io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName used on opensource projects

Example 1 with KafkaResources.kafkaStatefulSetName

use of io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName in project strimzi by strimzi.

the class KafkaST method testAppDomainLabels.

@ParallelNamespaceTest
@Tag(INTERNAL_CLIENTS_USED)
void testAppDomainLabels(ExtensionContext extensionContext) {
    final String namespaceName = StUtils.getNamespaceBasedOnRbac(namespace, extensionContext);
    final String clusterName = mapWithClusterNames.get(extensionContext.getDisplayName());
    final String topicName = mapWithTestTopics.get(extensionContext.getDisplayName());
    resourceManager.createResource(extensionContext, KafkaTemplates.kafkaEphemeral(clusterName, 3, 1).build());
    resourceManager.createResource(extensionContext, KafkaTopicTemplates.topic(clusterName, topicName).build());
    resourceManager.createResource(extensionContext, KafkaClientsTemplates.kafkaClients(false, clusterName + "-" + Constants.KAFKA_CLIENTS).build());
    final String kafkaClientsPodName = kubeClient(namespaceName).listPodsByPrefixInName(namespaceName, clusterName + "-" + Constants.KAFKA_CLIENTS).get(0).getMetadata().getName();
    InternalKafkaClient internalKafkaClient = new InternalKafkaClient.Builder().withUsingPodName(kafkaClientsPodName).withTopicName(topicName).withNamespaceName(namespaceName).withClusterName(clusterName).withMessageCount(MESSAGE_COUNT).withListenerName(Constants.PLAIN_LISTENER_DEFAULT_NAME).build();
    Map<String, String> labels;
    LOGGER.info("---> PODS <---");
    List<Pod> pods = kubeClient(namespaceName).listPods(namespaceName, clusterName).stream().filter(pod -> pod.getMetadata().getName().startsWith(clusterName)).filter(pod -> !pod.getMetadata().getName().startsWith(clusterName + "-" + Constants.KAFKA_CLIENTS)).collect(Collectors.toList());
    for (Pod pod : pods) {
        LOGGER.info("Getting labels from {} pod", pod.getMetadata().getName());
        verifyAppLabels(pod.getMetadata().getLabels());
    }
    LOGGER.info("---> STATEFUL SETS <---");
    Map<String, String> kafkaLabels = StUtils.getLabelsOfStatefulSetOrStrimziPodSet(namespaceName, KafkaResources.kafkaStatefulSetName(clusterName));
    LOGGER.info("Getting labels from stateful set of kafka resource");
    verifyAppLabels(kafkaLabels);
    Map<String, String> zooLabels = StUtils.getLabelsOfStatefulSetOrStrimziPodSet(namespaceName, KafkaResources.zookeeperStatefulSetName(clusterName));
    LOGGER.info("Getting labels from stateful set of zookeeper resource");
    verifyAppLabels(zooLabels);
    LOGGER.info("---> SERVICES <---");
    List<Service> services = kubeClient(namespaceName).listServices(namespaceName).stream().filter(service -> service.getMetadata().getName().startsWith(clusterName)).collect(Collectors.toList());
    for (Service service : services) {
        LOGGER.info("Getting labels from {} service", service.getMetadata().getName());
        verifyAppLabels(service.getMetadata().getLabels());
    }
    LOGGER.info("---> SECRETS <---");
    List<Secret> secrets = kubeClient(namespaceName).listSecrets(namespaceName).stream().filter(secret -> secret.getMetadata().getName().startsWith(clusterName) && secret.getType().equals("Opaque")).collect(Collectors.toList());
    for (Secret secret : secrets) {
        LOGGER.info("Getting labels from {} secret", secret.getMetadata().getName());
        verifyAppLabelsForSecretsAndConfigMaps(secret.getMetadata().getLabels());
    }
    LOGGER.info("---> CONFIG MAPS <---");
    List<ConfigMap> configMaps = kubeClient(namespaceName).listConfigMapsInSpecificNamespace(namespaceName, clusterName);
    for (ConfigMap configMap : configMaps) {
        LOGGER.info("Getting labels from {} config map", configMap.getMetadata().getName());
        verifyAppLabelsForSecretsAndConfigMaps(configMap.getMetadata().getLabels());
    }
    internalKafkaClient.checkProducedAndConsumedMessages(internalKafkaClient.sendMessagesPlain(), internalKafkaClient.receiveMessagesPlain());
}

Example 2 with KafkaResources.kafkaStatefulSetName

use of io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName in project strimzi by strimzi.

the class KafkaST method testJvmAndResources.

@ParallelNamespaceTest
void testJvmAndResources(ExtensionContext extensionContext) {
    final String namespaceName = StUtils.getNamespaceBasedOnRbac(namespace, extensionContext);
    final String clusterName = mapWithClusterNames.get(extensionContext.getDisplayName());
    final LabelSelector kafkaSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.kafkaStatefulSetName(clusterName));
    final LabelSelector zkSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.zookeeperStatefulSetName(clusterName));
    ArrayList<SystemProperty> javaSystemProps = new ArrayList<>();
    javaSystemProps.add(new SystemPropertyBuilder().withName("javax.net.debug").withValue("verbose").build());
    Map<String, String> jvmOptionsXX = new HashMap<>();
    jvmOptionsXX.put("UseG1GC", "true");
    resourceManager.createResource(extensionContext, KafkaTemplates.kafkaEphemeral(clusterName, 1, 1).editSpec().editKafka().withResources(new ResourceRequirementsBuilder().addToLimits("memory", new Quantity("1.5Gi")).addToLimits("cpu", new Quantity("1")).addToRequests("memory", new Quantity("1Gi")).addToRequests("cpu", new Quantity("50m")).build()).withNewJvmOptions().withXmx("1g").withXms("512m").withXx(jvmOptionsXX).endJvmOptions().endKafka().editZookeeper().withResources(new ResourceRequirementsBuilder().addToLimits("memory", new Quantity("1G")).addToLimits("cpu", new Quantity("0.5")).addToRequests("memory", new Quantity("0.5G")).addToRequests("cpu", new Quantity("25m")).build()).withNewJvmOptions().withXmx("1G").withXms("512M").withXx(jvmOptionsXX).endJvmOptions().endZookeeper().withNewEntityOperator().withNewTopicOperator().withResources(new ResourceRequirementsBuilder().addToLimits("memory", new Quantity("1024Mi")).addToLimits("cpu", new Quantity("500m")).addToRequests("memory", new Quantity("384Mi")).addToRequests("cpu", new Quantity("0.025")).build()).withNewJvmOptions().withXmx("2G").withXms("1024M").withJavaSystemProperties(javaSystemProps).endJvmOptions().endTopicOperator().withNewUserOperator().withResources(new ResourceRequirementsBuilder().addToLimits("memory", new Quantity("512M")).addToLimits("cpu", new Quantity("300m")).addToRequests("memory", new Quantity("256M")).addToRequests("cpu", new Quantity("30m")).build()).withNewJvmOptions().withXmx("1G").withXms("512M").withJavaSystemProperties(javaSystemProps).endJvmOptions().endUserOperator().endEntityOperator().endSpec().build());
    // Make snapshots for Kafka cluster to meke sure that there is no rolling update after CO reconciliation
    final String zkStsName = KafkaResources.zookeeperStatefulSetName(clusterName);
    final String kafkaStsName = kafkaStatefulSetName(clusterName);
    final String eoDepName = KafkaResources.entityOperatorDeploymentName(clusterName);
    final Map<String, String> zkPods = PodUtils.podSnapshot(namespaceName, zkSelector);
    final Map<String, String> kafkaPods = PodUtils.podSnapshot(namespaceName, kafkaSelector);
    final Map<String, String> eoPods = DeploymentUtils.depSnapshot(namespaceName, eoDepName);
    assertResources(namespaceName, KafkaResources.kafkaPodName(clusterName, 0), "kafka", "1536Mi", "1", "1Gi", "50m");
    assertExpectedJavaOpts(namespaceName, KafkaResources.kafkaPodName(clusterName, 0), "kafka", "-Xmx1g", "-Xms512m", "-XX:+UseG1GC");
    assertResources(namespaceName, KafkaResources.zookeeperPodName(clusterName, 0), "zookeeper", "1G", "500m", "500M", "25m");
    assertExpectedJavaOpts(namespaceName, KafkaResources.zookeeperPodName(clusterName, 0), "zookeeper", "-Xmx1G", "-Xms512M", "-XX:+UseG1GC");
    Optional<Pod> pod = kubeClient(namespaceName).listPods(namespaceName).stream().filter(p -> p.getMetadata().getName().startsWith(KafkaResources.entityOperatorDeploymentName(clusterName))).findFirst();
    assertThat("EO pod does not exist", pod.isPresent(), is(true));
    assertResources(namespaceName, pod.get().getMetadata().getName(), "topic-operator", "1Gi", "500m", "384Mi", "25m");
    assertResources(namespaceName, pod.get().getMetadata().getName(), "user-operator", "512M", "300m", "256M", "30m");
    assertExpectedJavaOpts(namespaceName, pod.get().getMetadata().getName(), "topic-operator", "-Xmx2G", "-Xms1024M", null);
    assertExpectedJavaOpts(namespaceName, pod.get().getMetadata().getName(), "user-operator", "-Xmx1G", "-Xms512M", null);
    String eoPod = eoPods.keySet().toArray()[0].toString();
    kubeClient(namespaceName).getPod(namespaceName, eoPod).getSpec().getContainers().forEach(container -> {
        if (!container.getName().equals("tls-sidecar")) {
            LOGGER.info("Check if -D java options are present in {}", container.getName());
            String javaSystemProp = container.getEnv().stream().filter(envVar -> envVar.getName().equals("STRIMZI_JAVA_SYSTEM_PROPERTIES")).findFirst().orElseThrow().getValue();
            String javaOpts = container.getEnv().stream().filter(envVar -> envVar.getName().equals("STRIMZI_JAVA_OPTS")).findFirst().orElseThrow().getValue();
            assertThat(javaSystemProp, is("-Djavax.net.debug=verbose"));
            if (container.getName().equals("topic-operator")) {
                assertThat(javaOpts, is("-Xms1024M -Xmx2G"));
            }
            if (container.getName().equals("user-operator")) {
                assertThat(javaOpts, is("-Xms512M -Xmx1G"));
            }
        }
    });
    LOGGER.info("Checking no rolling update for Kafka cluster");
    RollingUpdateUtils.waitForNoRollingUpdate(namespaceName, zkSelector, zkPods);
    RollingUpdateUtils.waitForNoRollingUpdate(namespaceName, kafkaSelector, kafkaPods);
    DeploymentUtils.waitForNoRollingUpdate(namespaceName, eoDepName, eoPods);
}

Example 3 with KafkaResources.kafkaStatefulSetName

use of io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName in project strimzi by strimzi.

the class RollingUpdateST method testClusterOperatorFinishAllRollingUpdates.

@IsolatedTest("Deleting Pod of Shared Cluster Operator")
@Tag(ROLLING_UPDATE)
void testClusterOperatorFinishAllRollingUpdates(ExtensionContext extensionContext) {
    final String clusterName = mapWithClusterNames.get(extensionContext.getDisplayName());
    final LabelSelector kafkaSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.kafkaStatefulSetName(clusterName));
    final LabelSelector zkSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.zookeeperStatefulSetName(clusterName));
    resourceManager.createResource(extensionContext, KafkaTemplates.kafkaPersistent(clusterName, 3, 3).editMetadata().withNamespace(namespace).endMetadata().build());
    Map<String, String> kafkaPods = PodUtils.podSnapshot(namespace, kafkaSelector);
    Map<String, String> zkPods = PodUtils.podSnapshot(namespace, zkSelector);
    // Changes to readiness probe should trigger a rolling update
    KafkaResource.replaceKafkaResourceInSpecificNamespace(clusterName, kafka -> {
        kafka.getSpec().getKafka().setReadinessProbe(new ProbeBuilder().withTimeoutSeconds(6).build());
        kafka.getSpec().getZookeeper().setReadinessProbe(new ProbeBuilder().withTimeoutSeconds(6).build());
    }, namespace);
    TestUtils.waitFor("rolling update starts", Constants.GLOBAL_POLL_INTERVAL, Constants.GLOBAL_STATUS_TIMEOUT, () -> kubeClient(namespace).listPods(namespace).stream().filter(pod -> pod.getStatus().getPhase().equals("Running")).map(pod -> pod.getStatus().getPhase()).collect(Collectors.toList()).size() < kubeClient().listPods().size());
    LabelSelector coLabelSelector = kubeClient(INFRA_NAMESPACE).getDeployment(INFRA_NAMESPACE, ResourceManager.getCoDeploymentName()).getSpec().getSelector();
    LOGGER.info("Deleting Cluster Operator pod with labels {}", coLabelSelector);
    kubeClient(INFRA_NAMESPACE).deletePodsByLabelSelector(coLabelSelector);
    LOGGER.info("Cluster Operator pod deleted");
    RollingUpdateUtils.waitTillComponentHasRolled(namespace, zkSelector, 3, zkPods);
    TestUtils.waitFor("rolling update starts", Constants.GLOBAL_POLL_INTERVAL, Constants.GLOBAL_STATUS_TIMEOUT, () -> kubeClient(namespace).listPods().stream().map(pod -> pod.getStatus().getPhase()).collect(Collectors.toList()).contains("Pending"));
    LOGGER.info("Deleting Cluster Operator pod with labels {}", coLabelSelector);
    kubeClient(INFRA_NAMESPACE).deletePodsByLabelSelector(coLabelSelector);
    LOGGER.info("Cluster Operator pod deleted");
    RollingUpdateUtils.waitTillComponentHasRolled(namespace, kafkaSelector, 3, kafkaPods);
}

Example 4 with KafkaResources.kafkaStatefulSetName

use of io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName in project strimzi-kafka-operator by strimzi.

the class KafkaST method testLabelsAndAnnotationForPVC.

@ParallelNamespaceTest
void testLabelsAndAnnotationForPVC(ExtensionContext extensionContext) {
    final String namespaceName = StUtils.getNamespaceBasedOnRbac(namespace, extensionContext);
    final String clusterName = mapWithClusterNames.get(extensionContext.getDisplayName());
    final String labelAnnotationKey = "testKey";
    final String firstValue = "testValue";
    final String changedValue = "editedTestValue";
    Map<String, String> pvcLabel = new HashMap<>();
    pvcLabel.put(labelAnnotationKey, firstValue);
    Map<String, String> pvcAnnotation = pvcLabel;
    Map<String, String> statefulSetLabels = new HashMap<>();
    statefulSetLabels.put("app.kubernetes.io/part-of", "some-app");
    statefulSetLabels.put("app.kubernetes.io/managed-by", "some-app");
    resourceManager.createResource(extensionContext, KafkaTemplates.kafkaPersistent(clusterName, 3, 1).editSpec().editKafka().withNewTemplate().withNewStatefulset().withNewMetadata().withLabels(statefulSetLabels).endMetadata().endStatefulset().withNewPodSet().withNewMetadata().withLabels(statefulSetLabels).endMetadata().endPodSet().withNewPersistentVolumeClaim().withNewMetadata().addToLabels(pvcLabel).addToAnnotations(pvcAnnotation).endMetadata().endPersistentVolumeClaim().endTemplate().withStorage(new JbodStorageBuilder().withVolumes(new PersistentClaimStorageBuilder().withDeleteClaim(false).withId(0).withSize("20Gi").build(), new PersistentClaimStorageBuilder().withDeleteClaim(true).withId(1).withSize("10Gi").build()).build()).endKafka().editZookeeper().withNewTemplate().withNewPersistentVolumeClaim().withNewMetadata().addToLabels(pvcLabel).addToAnnotations(pvcAnnotation).endMetadata().endPersistentVolumeClaim().endTemplate().withNewPersistentClaimStorage().withDeleteClaim(false).withSize("3Gi").endPersistentClaimStorage().endZookeeper().endSpec().build());
    LOGGER.info("Check if Kubernetes labels are applied");
    Map<String, String> actualStatefulSetLabels = StUtils.getLabelsOfStatefulSetOrStrimziPodSet(namespaceName, KafkaResources.kafkaStatefulSetName(clusterName));
    assertThat(actualStatefulSetLabels.get("app.kubernetes.io/part-of"), is("some-app"));
    assertThat(actualStatefulSetLabels.get("app.kubernetes.io/managed-by"), is("some-app"));
    LOGGER.info("Kubernetes labels are correctly set and present");
    List<PersistentVolumeClaim> pvcs = kubeClient(namespaceName).listPersistentVolumeClaims(namespaceName, clusterName).stream().filter(persistentVolumeClaim -> persistentVolumeClaim.getMetadata().getName().contains(clusterName)).collect(Collectors.toList());
    assertThat(pvcs.size(), is(7));
    for (PersistentVolumeClaim pvc : pvcs) {
        LOGGER.info("Verifying that PVC label {} - {} = {}", pvc.getMetadata().getName(), firstValue, pvc.getMetadata().getLabels().get(labelAnnotationKey));
        assertThat(firstValue, is(pvc.getMetadata().getLabels().get(labelAnnotationKey)));
        assertThat(firstValue, is(pvc.getMetadata().getAnnotations().get(labelAnnotationKey)));
    }
    pvcLabel.put(labelAnnotationKey, changedValue);
    pvcAnnotation.put(labelAnnotationKey, changedValue);
    KafkaResource.replaceKafkaResourceInSpecificNamespace(clusterName, kafka -> {
        LOGGER.info("Replacing kafka && zookeeper labels and annotations from {} to {}", labelAnnotationKey, changedValue);
        kafka.getSpec().getKafka().getTemplate().getPersistentVolumeClaim().getMetadata().setLabels(pvcLabel);
        kafka.getSpec().getKafka().getTemplate().getPersistentVolumeClaim().getMetadata().setAnnotations(pvcAnnotation);
        kafka.getSpec().getZookeeper().getTemplate().getPersistentVolumeClaim().getMetadata().setLabels(pvcLabel);
        kafka.getSpec().getZookeeper().getTemplate().getPersistentVolumeClaim().getMetadata().setAnnotations(pvcAnnotation);
    }, namespaceName);
    PersistentVolumeClaimUtils.waitUntilPVCLabelsChange(namespaceName, clusterName, pvcLabel, labelAnnotationKey);
    PersistentVolumeClaimUtils.waitUntilPVCAnnotationChange(namespaceName, clusterName, pvcAnnotation, labelAnnotationKey);
    KafkaUtils.waitForKafkaReady(namespaceName, clusterName);
    pvcs = kubeClient(namespaceName).listPersistentVolumeClaims(namespaceName, clusterName).stream().filter(persistentVolumeClaim -> persistentVolumeClaim.getMetadata().getName().contains(clusterName)).collect(Collectors.toList());
    LOGGER.info(pvcs.toString());
    assertThat(pvcs.size(), is(7));
    for (PersistentVolumeClaim pvc : pvcs) {
        LOGGER.info("Verifying replaced PVC label {} - {} = {}", pvc.getMetadata().getName(), firstValue, pvc.getMetadata().getLabels().get(labelAnnotationKey));
        assertThat(pvc.getMetadata().getLabels().get(labelAnnotationKey), is(changedValue));
        assertThat(pvc.getMetadata().getAnnotations().get(labelAnnotationKey), is(changedValue));
    }
}

Example 5 with KafkaResources.kafkaStatefulSetName

use of io.strimzi.api.kafka.model.KafkaResources.kafkaStatefulSetName in project strimzi-kafka-operator by strimzi.

the class RollingUpdateST method testKafkaAndZookeeperScaleUpScaleDown.

@ParallelNamespaceTest
@Tag(ACCEPTANCE)
@Tag(SCALABILITY)
void testKafkaAndZookeeperScaleUpScaleDown(ExtensionContext extensionContext) {
    final String namespaceName = StUtils.getNamespaceBasedOnRbac(namespace, extensionContext);
    final String clusterName = mapWithClusterNames.get(extensionContext.getDisplayName());
    final String topicName = mapWithTestTopics.get(extensionContext.getDisplayName());
    final String userName = mapWithTestUsers.get(extensionContext.getDisplayName());
    final String kafkaClientsName = mapWithKafkaClientNames.get(extensionContext.getDisplayName());
    final LabelSelector kafkaSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.kafkaStatefulSetName(clusterName));
    final LabelSelector zkSelector = KafkaResource.getLabelSelector(clusterName, KafkaResources.zookeeperStatefulSetName(clusterName));
    resourceManager.createResource(extensionContext, KafkaTemplates.kafkaPersistent(clusterName, 3, 3).editSpec().editKafka().addToConfig(singletonMap("default.replication.factor", 1)).addToConfig("auto.create.topics.enable", "false").endKafka().endSpec().build());
    Map<String, String> kafkaPods = PodUtils.podSnapshot(namespaceName, kafkaSelector);
    KafkaUser user = KafkaUserTemplates.tlsUser(namespaceName, clusterName, userName).build();
    resourceManager.createResource(extensionContext, user);
    testDockerImagesForKafkaCluster(clusterName, clusterOperator.getDeploymentNamespace(), namespaceName, 3, 1, false);
    // kafka cluster already deployed
    LOGGER.info("Running kafkaScaleUpScaleDown {}", clusterName);
    final int initialReplicas = kubeClient(namespaceName).getClient().pods().inNamespace(namespaceName).withLabelSelector(kafkaSelector).list().getItems().size();
    assertEquals(3, initialReplicas);
    resourceManager.createResource(extensionContext, KafkaTopicTemplates.topic(clusterName, topicName, 3, initialReplicas, initialReplicas).build());
    resourceManager.createResource(extensionContext, false, KafkaClientsTemplates.kafkaClients(true, kafkaClientsName, user).build());
    final String defaultKafkaClientsPodName = PodUtils.getPodsByPrefixInNameWithDynamicWait(namespaceName, kafkaClientsName).get(0).getMetadata().getName();
    InternalKafkaClient internalKafkaClient = new InternalKafkaClient.Builder().withUsingPodName(defaultKafkaClientsPodName).withTopicName(topicName).withNamespaceName(namespaceName).withClusterName(clusterName).withMessageCount(MESSAGE_COUNT).withKafkaUsername(userName).withListenerName(Constants.TLS_LISTENER_DEFAULT_NAME).build();
    internalKafkaClient.produceAndConsumesTlsMessagesUntilBothOperationsAreSuccessful();
    // scale up
    final int scaleTo = initialReplicas + 4;
    LOGGER.info("Scale up Kafka to {}", scaleTo);
    // Create snapshot of current cluster
    String kafkaStsName = kafkaStatefulSetName(clusterName);
    KafkaResource.replaceKafkaResourceInSpecificNamespace(clusterName, kafka -> {
        kafka.getSpec().getKafka().setReplicas(scaleTo);
    }, namespaceName);
    kafkaPods = RollingUpdateUtils.waitTillComponentHasRolled(namespaceName, kafkaSelector, scaleTo, kafkaPods);
    LOGGER.info("Kafka scale up to {} finished", scaleTo);
    internalKafkaClient = internalKafkaClient.toBuilder().withConsumerGroupName(ClientUtils.generateRandomConsumerGroup()).build();
    internalKafkaClient.consumesTlsMessagesUntilOperationIsSuccessful(MESSAGE_COUNT);
    assertThat((int) kubeClient(namespaceName).listPersistentVolumeClaims().stream().filter(pvc -> pvc.getMetadata().getName().contains(KafkaResources.kafkaStatefulSetName(clusterName))).count(), is(scaleTo));
    final int zookeeperScaleTo = initialReplicas + 2;
    LOGGER.info("Scale up Zookeeper to {}", zookeeperScaleTo);
    KafkaResource.replaceKafkaResourceInSpecificNamespace(clusterName, k -> k.getSpec().getZookeeper().setReplicas(zookeeperScaleTo), namespaceName);
    RollingUpdateUtils.waitForComponentAndPodsReady(namespaceName, zkSelector, zookeeperScaleTo);
    LOGGER.info("Kafka scale up to {} finished", zookeeperScaleTo);
    internalKafkaClient = internalKafkaClient.toBuilder().withConsumerGroupName(ClientUtils.generateRandomConsumerGroup()).build();
    internalKafkaClient.consumesTlsMessagesUntilOperationIsSuccessful(MESSAGE_COUNT);
    // scale down
    LOGGER.info("Scale down Kafka to {}", initialReplicas);
    KafkaResource.replaceKafkaResourceInSpecificNamespace(clusterName, k -> k.getSpec().getKafka().setReplicas(initialReplicas), namespaceName);
    RollingUpdateUtils.waitTillComponentHasRolled(namespaceName, kafkaSelector, initialReplicas, kafkaPods);
    LOGGER.info("Kafka scale down to {} finished", initialReplicas);
    internalKafkaClient = internalKafkaClient.toBuilder().withConsumerGroupName(ClientUtils.generateRandomConsumerGroup()).build();
    internalKafkaClient.consumesTlsMessagesUntilOperationIsSuccessful(MESSAGE_COUNT);
    assertThat(kubeClient(namespaceName).listPersistentVolumeClaims(namespaceName, clusterName).stream().filter(pvc -> pvc.getMetadata().getName().contains("data-" + KafkaResources.kafkaStatefulSetName(clusterName))).collect(Collectors.toList()).size(), is(initialReplicas));
    // Create new topic to ensure, that ZK is working properly
    String newTopicName = KafkaTopicUtils.generateRandomNameOfTopic();
    resourceManager.createResource(extensionContext, KafkaTopicTemplates.topic(clusterName, newTopicName).build());
    internalKafkaClient = internalKafkaClient.toBuilder().withTopicName(newTopicName).withConsumerGroupName(ClientUtils.generateRandomConsumerGroup()).build();
    internalKafkaClient.produceAndConsumesTlsMessagesUntilBothOperationsAreSuccessful();
}