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Strimzi

1.2.0Networking & Messaging
Aug 20, 2026

ACTION 2CHECK 3OTHER 7

This release removes legacy CRD API versions and resource state metrics, and changes defaults for token mounting, feature gates, and container security contexts. It also adds Kafka and configuration capabilities and updates shipped dependencies.

Action needed (2)

  • breakingService Account token mounting

    Service Account tokens are no longer auto-mounted into Pods. They are mounted through a volume instead.

  • breakingThe ServerSideApplyPhase1 feature gate, permanently enabled

    The ServerSideApplyPhase1 feature gate has moved to GA and is permanently enabled. It can no longer be disabled.

Check if affected (3)

  • breakingLegacy CRD API versions, no longer supported

    Applies before upgrading to Strimzi 1.0.0 or later if you use the v1beta2, v1beta1, or v1alpha1 APIs.

    Strimzi 1.0.0 and later support only the v1 CRD API. The older v1beta2, v1beta1, and v1alpha1 APIs are no longer supported.

    convert all custom resources and upgrade the CRDs

  • breakingResource state metrics, removed

    Applicability is not stated in the release notes.

    Deprecated resource state metrics have been removed. The kube-state-metrics project should be used instead.

  • breakingDefault securityContext for operator installations

    Applies if you use the Cluster, Topic, and User Operator YAML installation files or the Cluster Operator Helm Chart.

    The Cluster, Topic, and User Operator YAML installation files and the Cluster Operator Helm Chart now use a default container security context that matches the Restricted Kubernetes Pod Security Standard. The default can be overridden with the securityContext property in the YAML installation files or Cluster Operator Helm Chart values.

    Restricted Kubernetes Pod Security Standard

All 7 other recorded changesadditions 3 · value changes 3 · constraints 1

additions (3)

  • * Support templated (per-pod) additional volumes for Kafka, Kafka Connect and Kafka MirrorMaker 2 operands
  • * Support for configuring Maven mirrors for Kafka Connect Build
  • * Added support for broker cordoning [KIP-1066](https://cwiki.apache.org/confluence/spaces/KAFKA/pages/311627566/KIP-1066+Mechanism+to+cordon+brokers+and+log+directories) during auto-rebalancing on scale down for Kafka 4.3+.

value changes (3)

  • * Connectors that request the stopped or paused state via spec.state are now created directly in that state instead of being started first and then stopped or paused.
  • * Update Strimzi metrics-reporter to 0.4.0
  • * Update strimzi-kafka-oauth to 0.18.0

constraints (1)

  • * Add support for Apache Kafka 4.3.1
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