0.23.0

CRD Upgrades

!!! IMPORTANT !!!

This release supports only the API version v1beta2 and CRD version apiextensions.k8s.io/v1. Migration to v1beta2 needs to be completed for all Strimzi CRDs and CRs before the upgrade to 0.23 is done!

For more details about the CRD upgrades, see the documentation.

Main changes since 0.22

• Add support for Kafka 2.8.0 and 2.6.2, remove support for Kafka 2.5.x
• Make it possible to configure maximum number of connections and maximum connection creation rate in listener configuration
• Add support for configuring finalizers for loadbalancer type listeners
• Use dedicated Service Account for Kafka Connect Build on Kubernetes
• Remove direct ZooKeeper access for handling user quotas in the User Operator. Add usage of Admin Client API instead.
• Migrate to CRD v1 (required by Kubernetes 1.22+)
• Support for configuring custom Authorizer implementation
• Changed Reconciliation interval for Topic Operator from 90 to 120 seconds (to keep it the same as for other operators)
• Changed Zookeeper session timeout default value to 18 seconds for Topic and User Operators (for improved resiliency)
• Removed requirement for replicas and partitions KafkaTopic spec making these parameters optional
• Support to configure a custom filter for parent CR's labels propagation into subresources
• Allow disabling service links (environment variables describing Kubernetes services) in Pod template
• Update Kaniko executor to 1.6.0
• Add support for separate control plane listener (disabled by default, available via the ControlPlaneListener feature gate)
• Support for Dual Stack networking

All changes can be found under the 0.23.0 milestone.

Changes, deprecations and removals

• Strimzi API versions v1alpha1 and v1beta1 were removed from all Strimzi custom resources apart from KafkaTopic and KafkaUser (use v1beta2 versions instead)
• The following annotations have been removed and cannot be used anymore:
  • cluster.operator.strimzi.io/delete-claim (used internally only - replaced by strimzi.io/delete-claim)
  • operator.strimzi.io/generation (used internally only - replaced by strimzi.io/generation)
  • operator.strimzi.io/delete-pod-and-pvc (use strimzi.io/delete-pod-and-pvc instead)
  • operator.strimzi.io/manual-rolling-update (use strimzi.io/manual-rolling-update instead)
• When the class field is configured in the configuration section of an Ingress-type listener, Strimzi will not automatically set the deprecated kubernetes.io/ingress.class annotation anymore. In case you still need this annotation, you can set it manually in the listener configuration using the annotations field or in the .spec.kafka.template section.
• The .spec.kafkaExporter.template.service section in the Kafka custom resource has been deprecated and will be removed in the next API version (the service itself was removed several releases ago).

Upgrading from Strimzi 0.22

See the documentation for upgrade instructions.