Knative GCP release v0.18.0

Release notes for release-0.18

Documentation

Changelog since v0.17.0

Changes by Kind

Action Required

• V1alpha1 sources and channels will be removed in 0.19. (#1676, @danyinggu)

Breaking Changes

• Change storage versions of all below resources from v1beta1 to v1
• Since we will remove v1alpha1 in 0.19, please make sure resources are migrated to storage version v1beta1

Action Required

• You must run pre-install job. (#1653, @danyinggu)

• You must run pre-install job prior to upgrading to get these resources to v1 API.
  ko apply -f config/pre-install/v0.18.0/ (#1644, @danyinggu)

Detailed Changes

• Change storage versions of all below resources from v1beta1 to v1:
  - "cloudauditlogssources.events.cloud.google.com"
  - "cloudpubsubsources.events.cloud.google.com"
  - "cloudstoragesources.events.cloud.google.com"
  - "cloudschedulersources.events.cloud.google.com"
  - "pullsubscriptions.internal.events.cloud.google.com"
  - "topics.internal.events.cloud.google.com"

• Since we will remove v1alpha1 in 0.19, please make sure the below resources are migrated to storage version v1beta1:
  - "channels.messaging.cloud.google.com"
  - "cloudbuildsources.events.cloud.google.com"

Resource Usage

• Default ingress CPU to 2000m and memory to 2000Mi
  • Adjust default HPA parameters accordingly
  • Default pubsub publish buffer limit to 300Mi
  • Loosen probe check threshold to 5 times (#1656, @yolocs)
• Update broker deployments spec for better availability during upgrades
  • Add MinReadySeconds=60s for broker deployments
  • Add a safer rolling update strategy
  • Relax probe period (#1690, @yolocs)

Reliability

• 🐛 Fix broker config reconcilation delay. (#1705, @ian-mi)
• 🐛 Fix bug status messag showing error (#1675, @zhongduo)
• Allows istio sidecar injection for all broker components (#1736, @yolocs)

Observability

• 🎁 Add exemplar traces to dispatch time and processing time, the exemplar can be viewed in Stackdriver dashboard in heatmap view. (#1638, @zhongduo)
• Provide additional error info when auth with pubsub fails in broker ingress. (#1666, @cathyzhyi)
• Return 429 (too many messages) when the ingress broker is sending too many messages, instead of 500 (internal server error). (#1737, @tayarani)
• 🎁 Add data residency support through configuration map. (#1681, @zhongduo)

Sources

• Add v1 API for CloudBuildSource. (#1657, @danyinggu)
• CloudPubSubSource now populates the dataschema CloudEvent attribute. The value is: https://raw.githubusercontent.com/googleapis/google-cloudevents/master/proto/google/events/cloud/pubsub/v1/data.proto (#1667, @nachocano)
• The CloudBuildSource reconciler is now using v1 CloudBuildSource API. (#1662, @danyinggu)