v1.5 release

Published on: 2022-06-06 ,  Revised on: 2023-08-03

Announcing Knative 1.5 Release

A new version of Knative is now available across multiple components.

Follow the instructions in Installing Knative to install the components you require.

Table of Contents


πŸ’« New Features & Changes

  • Allows dnsConfig and dnsPolicy to be specified on pod specs when the feature is enabled in the config-features config map. (#12897)
  • Enabling the container freezer will disable the readiness probe defaulted in by Knative. (#12967)
  • All hops encrypted epic - (alpha) TLS between activator and queue proxy (#12815)

🐞 Bug Fixes

  • Support for parsing name and namespace in activator from a request when 'Host' header or host name contains a port (#12974)
  • The value of panicRPSM was set as observedStableValue, but it should have been observedPanicValue as part of the metric collection. (#12910)
  • Reduce the chance of 503s when rolling out a new revision (#12842)


πŸ’« New Features & Changes

  • Propagate per-component logging levels to source receive adapters. (#6391)

🐞 Bug Fixes

  • 🧹 MTChannelBroker filter does not proxy headers from replies anymore other than the headers specified in its hardcoded allow-list. The list so far only contains Retry-After. (#6357)
  • πŸ› Fix pingsource-mt-adapter crash when the initial replicas is set to a value other than 0 (#6359, @lionelvillard)
  • πŸ› Fix Parallel not properly reporting underlying Channel creation failures (#6354)
  • 🧹 Now the Eventing Performance tests are ready to use, including Sender Throughput and latency graphs (#6340)

Networking Extensions

cert-manager plugin (net-certmanager)

πŸ’« New Features & Changes

  • Cert-manager is now in version 1.8.0. (#399)
  • Secrets automatically generated due to certificate creation are labeled with a special label key to support proper filtering from K8s informers in components that consume them. (#402)

Istio plugin (net-istio)

πŸ’« New Features & Changes

  • Memory leak fix for large clusters where all cluster secrets were listed in net-istio. Secret informer in ingress controller can be enabled to filter secrets based on the existence of a label key certificate.networking.knative.dev
  • Users are required to add the label key for custom secrets defined in ingresses. For special cases users are recommended to reach out to Knative community.
  • In case of AutoTLS provided by Knative net-certmanager this is done transparently.
  • To enable this behavior at net-istio set env var ENABLE_SECRET_INFORMER_FILTERING_BY_CERT_UID to true.
  • This will be available by default in future releases. (#920)
  • local-gateway.mesh: "mesh" option was dropped. (#915)

Eventing Extensions

Apache Kafka Broker

πŸ’« New Features & Changes

  • Deploy just the KafkaSource v2 controller and new statefulset dispatcher (no receiver) for users of KakfaSource (#2089)
  • With the kafka.eventing.knative.dev/external.topic annotation it is possible to use an externally managed Apache Kafka topic for the broker usage (#1023)
  • vertx_* metrics have been removed since they were causing unnecessary allocations. (#2147)
  • 🧽 Update or clean up current behavior The control plane sends retry configurations to the data plane. (#263)

🐞 Bug Fixes

  • Receiver's prober targets services instead of pods directly to allow components to be part of an Istio mesh (#2112)

RabbitMQ Broker and Source

🚨 Breaking or Notable

  • With the removal of standalone-broker, Secret type is no longer a supported Broker.Config (#773)

πŸ’« New Features & Changes

  • A new type RabbitmqBrokerConfig can be used to configure a Broker (#780)
  • Dispatcher will timeout after 30s when sending to the subscriber (#687)
  • Now the docs are better organized and performance tests graphs are correct (#721)
  • Resource requests for source controller increased (#738)
  • The Broker's Ingress and Dispatcher have deployment resource requests and limits
  • The Source's Receive Adapter have deployment resources requests and limits (#771)
  • The Broker's ingress uses the Binary representation of the CloudEvents
  • The Broker's Dispatcher uses the protocol binding to get a CloudEvent from a RabbitMQ Message
  • Added performance tests for the source using the new Ingress CE Binary representation, that makes the Ingress plugable to the Source (#751)
  • Script to automate the generation of the performance results per release
  • Complete performance results graph tests for the RabbitMQ's Broker and Source (#767)

🐞 Bug Fixes

  • The backoffDelay env variable is parsed correctly on the Broker's and Trigger's Dispatcher
  • The backoffDelay env variable is parsed correctly on the Source's receive adapter (#750)
  • BackoffDelay is used when defined in Broker or Trigger delivery spec
  • dead letter messaging uses the same delivery spec (#723)
  • Fixed bug in Trigger dispatcher deployment from getting updated too frequently (#744)
  • Fixed bug where the broker ingress was not reconnecting after the connection or channel with RabbitMQ was closed (#778)


πŸ’« New Features & Changes

  • New flag options has been added to broker create and broker update commands:
          --backoff-delay string     The delay before retrying.
          --backoff-policy string    The retry backoff policy (linear, exponential).
          --class string             Broker class like 'MTChannelBasedBroker' or 'Kafka' (if available).
          --dl-sink string           The sink receiving event that could not be sent to a destination.
      -n, --namespace string         Specify the namespace to operate in.
          --retry int32              The minimum number of retries the sender should attempt when sending an event before moving it to the dead letter sink.
          --retry-after-max string   An optional upper bound on the duration specified in a "Retry-After" header when calculating backoff times for retrying 429 and 503 response codes. Setting the value to zero ("PT0S") can be used to opt-out of respecting "Retry-After" header values altogether. This value only takes effect if "Retry" is configured, and also depends on specific implementations (Channels, Sources, etc.)
                                     choosing to provide this capability.
          --timeout string           The timeout of each single request. The value must be greater than 0.


πŸ’« New Features & Changes

  • Update the template and samples for csv bundle (#1061)

🐞 Bug Fixes

  • Add the support of port and host configuration for gateways (#1047)
  • Add the configuration of selector for services (#1050)
  • Add the annotation sidecar.istio.io/inject: "false" to operator-webhook (#1066)
  • Support overriding env vars per container (#1085)

Thank you, contributors

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