mirror of https://github.com/knative/docs.git
318 lines
14 KiB
HTML
318 lines
14 KiB
HTML
---
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title: "Announcing the Knative v0.5 release"
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linkTitle: "Version 0.5 release"
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date: 2019-04-11
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description: "The Knative v0.5 release announcement"
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type: "blog"
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image: knative-eventing.png
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---
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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</head>
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<body>
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<article class="h-entry">
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<section data-field="subtitle" class="p-summary">
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Once again, we are excited to announce new release of Knative: a
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platform to help developers build, deploy, and manage modern serverless…
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</section>
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<section data-field="body" class="e-content">
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<section
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name="3f42"
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class="section section--body section--first section--last"
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>
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<div class="section-divider"><hr class="section-divider" /></div>
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<div class="section-content">
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<div class="section-inner sectionLayout--insetColumn">
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<h3
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name="da2e"
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id="da2e"
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class="graf graf--h3 graf--leading graf--title"
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>
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Announcing Knative v0.5 Release
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</h3>
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<p name="bc75" id="bc75" class="graf graf--p graf-after--h3">
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Once again, we are excited to announce a new release of
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<a
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href="https://www.knative.dev/"
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data-href="https://www.knative.dev/"
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class="markup--anchor markup--p-anchor"
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rel="noopener"
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target="_blank"
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>Knative</a
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>: a platform to help developers build, deploy, and manage
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modern serverless workloads on Kubernetes.
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</p>
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<p name="dd43" id="dd43" class="graf graf--p graf-after--p">
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While the more frequent and predictable releases of Knative
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gives us an opportunity to collect faster feedback from
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real-world use-cases, they also mean smaller and more
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incremental features. Well, that’s not always the case. Knative
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v0.5 delivers an exciting set of updates in eventing.
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Introducing Trigger and Broker objects which further improve and
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simplify the developer experience building event-driven systems
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on Knative.
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</p>
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<p name="3634" id="3634" class="graf graf--p graf-after--p">
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In addition to eventing, this release of Knative also improves a
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number of metrics and the overall observability of autoscaling,
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queue proxy, and Istio telemetry. Let’s review these and a few
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other changes in more depth:
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</p>
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<h3 name="e284" id="e284" class="graf graf--h3 graf-after--p">
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Eventing
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</h3>
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<p name="b67b" id="b67b" class="graf graf--p graf-after--h3">
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With the introduction of
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<strong class="markup--strong markup--p-strong">Trigger</strong>
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and
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<strong class="markup--strong markup--p-strong">Broker</strong>
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objects into the
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<strong class="markup--strong markup--p-strong"
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>Eventing</strong
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>
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architecture, developers can easily build robust, complex,
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event-driven systems. By decoupling
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<strong class="markup--strong markup--p-strong"
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>Producing</strong
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>
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and
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<strong class="markup--strong markup--p-strong"
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>Consuming</strong
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>
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services there is no longer the need for complex wiring or
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routing configuration. We are excited to see what new types of
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events and innovative solutions the community will develop using
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this new capability!
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</p>
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<figure
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name="b2df"
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id="b2df"
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class="graf graf--figure graf-after--p"
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>
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<div
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class="aspectRatioPlaceholder is-locked"
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style="max-width: 700px; max-height: 291px;"
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>
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<div
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class="aspectRatioPlaceholder-fill"
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></div>
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<img
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class="graf-image"
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data-image-id="knative-eventing.png"
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data-width="2586"
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data-height="1076"
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data-is-featured="true"
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src="../../../../images/knative-eventing.png"
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/>
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</div>
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<figcaption class="imageCaption">
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Knative Eventing Object Model
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</figcaption>
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</figure>
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<p name="dafe" id="dafe" class="graf graf--p graf-after--figure">
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<strong class="markup--strong markup--p-strong"
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>Trigger: </strong
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>developers no longer need to manually provision transport for
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their events and route them to downstream knative services. They
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simply define an event trigger that selects the source events
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(with any desired filtering) and sends them to the consuming
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service. This greatly simplifies the developer experience.
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</p>
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<p name="ad1c" id="ad1c" class="graf graf--p graf-after--p">
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<strong class="markup--strong markup--p-strong">Broker: </strong
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>the events Broker serves as the central events hub to which all
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messages are sent. Developers and Users simply write services or
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configure Sources that emit events to the Broker, which handles
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the rest. Consuming services need only create Triggers to
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receive the events in which they’re interested in from the
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Broker.
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</p>
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<p name="cfe0" id="cfe0" class="graf graf--p graf-after--p">
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<strong class="markup--strong markup--p-strong"
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>New event Source: </strong
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>this release of Knative adds support for the Kafka event
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source, which brings the power and richness of the Kafka
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ecosystem to Knative and Kubernetes.
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</p>
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<h3 name="1397" id="1397" class="graf graf--h3 graf-after--p">
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Autoscaling
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</h3>
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<p name="112e" id="112e" class="graf graf--p graf-after--h3">
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Autoscaling added improvements which makes autoscaling under a
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variety of workloads a smoother motion as well as being more
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efficient. Expansion of autoscaling metrics were added for
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additional visibility over time-frames.
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</p>
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<h3 name="65a6" id="65a6" class="graf graf--h3 graf-after--p">
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Core API
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</h3>
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<p name="dbe8" id="dbe8" class="graf graf--p graf-after--h3">
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In this release, named sub-routes now surface their URLs in the
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status of Service and Route resources, so there’s no more
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guesswork in how to target one fork of your traffic split. This
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is one of the first changes to result from our “v1beta1 task
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force” which has been discussing the next iteration of the
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Serving API. Expect to see lots more changes in the coming
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releases.
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</p>
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<p name="48d8" id="48d8" class="graf graf--p graf-after--p">
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In addition, several of the default values populated by our
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webhook are now configurable through a new ConfigMap called
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config-defaults. We have also increased the visibility into
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system errors by surfacing more Kubernetes events when our
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controllers suffer internal errors. Last but not least, we have
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expanded our conformance testing to include securityContext and
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metadata.generateName.
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</p>
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<h3 name="f9b0" id="f9b0" class="graf graf--h3 graf-after--p">
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Networking
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</h3>
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<p name="7e4b" id="7e4b" class="graf graf--p graf-after--h3">
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Bulk of the work in the networking space this sprint focused on
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fixing bugs and improving overall cold-starts for gRPC services
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as well as further improving client default authority header
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handling.
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</p>
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<p name="3590" id="3590" class="graf graf--p graf-after--p">
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The complete set of Knative v0.5 release notes outlining the new
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features as well as bug fixes are available in the
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<a
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href="https://github.com/knative/serving/releases/tag/v0.5.0"
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data-href="https://github.com/knative/serving/releases/tag/v0.5.0"
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class="markup--anchor markup--p-anchor"
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rel="noopener"
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target="_blank"
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>Serving</a
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>,
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<a
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href="https://github.com/knative/build/releases/tag/v0.5.0"
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data-href="https://github.com/knative/build/releases/tag/v0.5.0"
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class="markup--anchor markup--p-anchor"
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rel="noopener"
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target="_blank"
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>Build</a
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>, and
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<a
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href="https://github.com/knative/eventing/releases/tag/v0.5.0"
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data-href="https://github.com/knative/eventing/releases/tag/v0.5.0"
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class="markup--anchor markup--p-anchor"
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rel="noopener"
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target="_blank"
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>Eventing</a
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>
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repositories.
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</p>
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<h3 name="813d" id="813d" class="graf graf--h3 graf-after--p">
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Learn more
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</h3>
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<ul class="postList">
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<li name="c00d" id="c00d" class="graf graf--li graf-after--h3">
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<a
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href="https://github.com/knative/docs#welcome-to-knative"
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data-href="https://github.com/knative/docs#welcome-to-knative"
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class="markup--anchor markup--li-anchor"
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rel="nofollow noopener noopener noopener noopener"
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target="_blank"
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>Welcome to Knative</a
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>
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</li>
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<li name="d88a" id="d88a" class="graf graf--li graf-after--li">
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<a
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href="https://knative.dev/docs/"
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target="_blank"
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>Getting started documentation</a
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>
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</li>
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<li name="a9ca" id="a9ca" class="graf graf--li graf-after--li">
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<a
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href="https://knative.dev/docs/samples/"
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target="_blank"
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>Samples and demos</a
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>
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</li>
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<li name="fe75" id="fe75" class="graf graf--li graf-after--li">
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<a
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href="https://knative.dev/contributing/"
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target="_blank"
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>Knative meetings and work groups</a
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>
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</li>
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<li name="cf03" id="cf03" class="graf graf--li graf-after--li">
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<a
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href="https://knative.dev/community/"
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target="_blank"
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>Questions and issues</a
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>
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</li>
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<li name="19ce" id="19ce" class="graf graf--li graf-after--li">
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Knative on Twitter (<a
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href="https://twitter.com/KnativeProject"
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data-href="https://twitter.com/KnativeProject"
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class="markup--anchor markup--li-anchor"
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rel="nofollow noopener noopener noopener noopener"
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target="_blank"
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>@KnativeProject</a
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>)
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</li>
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<li name="5fcb" id="5fcb" class="graf graf--li graf-after--li">
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Knative on
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<a
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href="https://stackoverflow.com/questions/tagged/knative"
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data-href="https://stackoverflow.com/questions/tagged/knative"
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class="markup--anchor markup--li-anchor"
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rel="nofollow noopener noopener noopener noopener"
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target="_blank"
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>StackOverflow</a
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>
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</li>
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<li
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name="3813"
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id="3813"
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class="graf graf--li graf-after--li graf--trailing"
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>
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Knative
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<a
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href="https://slack.knative.dev/"
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data-href="https://slack.knative.dev/"
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class="markup--anchor markup--li-anchor"
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rel="nofollow noopener noopener noopener noopener"
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target="_blank"
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>Slack</a
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>
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</li>
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</ul>
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</div>
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</div>
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</section>
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</section>
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<footer>
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<p>
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By
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<a href="https://medium.com/@mchmarny_google" class="p-author h-card"
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>Mark Chmarny</a
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>
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on
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<a href="https://medium.com/p/cfe646ca8e30"
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><time class="dt-published" datetime="2019-04-11T14:30:40.853Z"
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>April 11, 2019</time
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></a
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>.
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</p>
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<p>
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<a
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href="https://medium.com/@mchmarny_google/announcing-knative-v0-5-release-cfe646ca8e30"
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class="p-canonical"
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>Canonical link</a
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>
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</p>
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<p>
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Exported from <a href="https://medium.com">Medium</a> on June 7, 2019.
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</p>
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</footer>
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</article>
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</body>
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</html>
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