KEDA 2.0.0

Today, we are happy to announce another milestone - KEDA 2.0 is now generally available and ready to scale all your workloads! 🎊

Learn more about this release in our blog post and easily get started.

What's new?

New

• Introduce Azure Log Analytics scaler (#1061) | docs)
• Introduce External Push scaler (#820 | docs)
• Introduce Metrics API Scaler (#1026 | docs)
• Introduce IBM MQ Scaler (#1259 | docs)
• Introduce CPU scaler (#1215 | docs)
• Introduce Memory scaler (#1215 | docs)
• Introduce scaling any CustomResource that implements Scale subresource (#703)
• Provide KEDA go-client (#494)
• Provide KEDA readiness and liveness probes (#788)
• Support for configuring scaling behavior in HPA v2beta2 (#802)
• Provide Standard Resource metrics to KEDA (#874)
• Provide support for Managed Identity support for Azure Monitor scaler (#936)
• Provide support for multiple triggers on ScaledObject (#476)
• Provide consumer offset reset policy option to Kafka scaler (#925)
• Provide option to restore to original replica count after ScaledObject's deletion (#219)
• Support for multiple redis list types in redis list scaler (#1006 | docs)
• Introduce Prometheus metrics for KEDA Metrics API Server (#823 | docs)
• Introduce Scaling Strategy for ScaledJob (#1227)

Improvements

• ScaledJobs: Introduce new scaling logic with fix orphan pod issue (#1214)
• enabling authentication for metric api scaler (#1137)
• Avoid exception when CRD doesn't follow Pod spec shape (#1195)
• Fix for not sending trigger metadata to the External Scaler
• Fix for up-down scaling behavior configuration is ignored in Kubernetes version >= 18.0
• Fix for RabbitMQ queue name causing problems in HPA external metric
• Update version.go properly during make release
• Improved code linting
• Move from autoscaling v2beta1 to v2beta2 for HPA (#721)
• Introduce shortnames for CRDs (#774)
• Improve kubectl get scaledobject to show related trigger authentication (#777)
• Improve kubectl get triggerauthentication to show information about configured parameters (#778)
• Added ScaledObject Status Conditions to display status of scaling (#750)
• Added optional authentication parameters for the Redis Scaler (#962)
• Improved GCP PubSub Scaler performance by closing the client correctly (#1087)

Breaking Changes

We are making some breaking changes, but you can easily migrate with our migration guide.

• Introduce a separate ScaledObject and ScaledJob(#653)
• Change apiGroup from keda.k8s.io to keda.sh (#552)
• Use apiextensions.k8s.io/v1 instead of apiextensions.k8s.io/v1beta1
• Kubernetes v1.16+ is required instead of v1.13
• All scalers metadata that is resolved from the scaleTarget environment have suffix FromEnv added. e.g: connection -> connectionFromEnv
• Remove New() and Close() from the interface of service ExternalScaler in externalscaler.proto.

Changes in our scalers:

• Kafka:
  • Split metadata and config for SASL and TLS (#1074)
  • Remove Kafka scaler requirement for CA/cert/key (#1288)
  • Removed deprecated brokerList for Kafka scaler (#882)
• Service Bus:
  • queueLength is now called messageCount (#1109)
• RabbitMQ:
  • Use host instead of apiHost in rabbitmq scaler. Add protocol in trigger spec to specify which protocol should be used (#1115)

Other

• Change Metrics Server image name from keda-metrics-adapter to keda-metrics-apiserver (#1105)
• Update Operator SDK and k8s deps (#1007,#870)
• Improved code linting
• Update dependencies

KEDA 2.0.0-rc2

We're happy to release KEDA 2.0.0 release candidate 2 (RC2) which is an incremental release to v2.0.0-rc. 🎉

Our goal is to release KEDA 2.0.0 stable in a couple of weeks.

What's new?

New

• New IBM MQ Scaler (#1259)
• Adding Scaling Strategy for ScaledJob (#1227)
• Adding support for cpu/memory scaler (#1215)

Improvements

• ScaledJobs: Introduce new scaling logic with fix orphan pod issue (#1214)
• enabling authentication for metric api scaler (#1137)
• Update dependencies
• Avoid exception when CRD doesn't follow Pod spec shape (#1195)
• Improved code linting

Breaking Changes

• Remove Kafka scaler requirement for CA/cert/key (#1288)
• Kubernetes v1.16+ is required instead of v1.13
• Use apiextensions.k8s.io/v1 instead of apiextensions.k8s.io/v1beta1

KEDA 2.0.0-rc

We're happy to release KEDA 2.0.0 release candidate (RC) which is an incremental release to v2.0.0-beta. 🎉

Our goal is to release KEDA 2.0.0 stable in mid-October.

We'll provide a full changelog later today after everything is released.

What's new?

New

• Support for Pod Identity for Log Analytics scaler

Improvements

• Fix for not sending trigger metadata to the External Scaler
• Fix for up-down scaling behavior configuration is ignored in Kubernetes version >= 18.0
• Fix for RabbitMQ queue name causing problems in HPA external metric
• Update version.go properly during make release
• Upgrade to operator-sdk v1.0.1
• Improved code linting

Breaking Changes

• Kubernetes v1.16+ is required instead of v1.13
• Use apiextensions.k8s.io/v1 instead of apiextensions.k8s.io/v1beta1

Other

None.

KEDA 2.0.0-beta

New

• KEDA scales any CustomResource that implements Scale subresource (#703)
• Provide KEDA go-client (#494)
• Define KEDA readiness and liveness probes (#788)
• KEDA Support for configurable scaling behavior in HPA v2beta2 (#802)
• Add External Push scaler (#820 | docs)
• Add Standard Resource metrics to KEDA (#874)
• Managed Identity support for Azure Monitor scaler (#936)
• Add support for multiple triggers on ScaledObject (#476)
• Add consumer offset reset policy option to Kafka scaler (#925)
• Add option to restore to original replica count after ScaledObject's deletion (#219)
• Add Prometheus metrics for KEDA Metrics API Server (#823 | docs)
• Add support for multiple redis list types in redis list scaler (#1006) | docs)
• Introduce Azure Log Analytics scaler (#1061) | docs)
• Add Metrics API Scaler (#1026)

Improvements

• Move from autoscaling v2beta1 to v2beta2 for HPA (#721)
• Introduce shortnames for CRDs (#774)
• Improve kubectl get scaledobject to show related trigger authentication (#777)
• Improve kubectl get triggerauthentication to show information about configured parameters (#778)
• Added ScaledObject Status Conditions to display status of scaling (#750)
• Added optional authentication parameters for the Redis Scaler (#962)
• Improved GCP PubSub Scaler performance by closing the client correctly (#1087)

Breaking Changes

• Change apiGroup from keda.k8s.io to keda.sh (#552)
• Introduce a separate ScaledObject and ScaledJob(#653)
• Remove New() and Close() from the interface of service ExternalScaler in externalscaler.proto.
• Removed deprecated brokerList for Kafka scaler (#882)
• All scalers metadata that is resolved from the scaleTarget environment have suffix FromEnv added. e.g: connection -> connectionFromEnv
• Kafka: split metadata and config for SASL and TLS (#1074)
• Service Bus: queueLength is now called messageCount (#1109)
• Use host instead of apiHost in rabbitmq scaler. Add protocol in trigger spec to specify which protocol should be used (#1115)

Other

• Update Operator SDK and k8s deps (#1007,#870)
• Change Metrics Server image name from keda-metrics-adapter to keda-metrics-apiserver (#1105)

KEDA 1.5.0

New

• Scalers
  • Introduce Active MQ Artemis scaler (Docs)
  • Introduce Redis Streams scaler (Docs | Details)
  • Introduce Cron scaler (Docs | Details)
• Secret Providers
  • Introduce HashiCorp Vault secret provider (Docs | Details)
• Other
  • Introduction of nodeSelector in raw YAML deployment specifications (Details)

Improvements

• Improved message count determination when using includeUnacked in RabbitMQ scaler (Details)
• Fix for blank path without trailing slash in RabbitMQ scaler (Details)
• Improved parsing of connection strings to support BlobEndpoint, QueueEndpoint, TableEndpoint & FileEndpoint segments (Details)
• Support scaling when no storage checkpoint exists in Azure Event Hubs scaler (Details)
• GCP Pub Scaler should not panic on invalid credentials (Details)
• Make queueLength optional in RabbitMQ scaler (Details)

Breaking Changes

None.

Other

None.

KEDA 1.4.1

New

None

Improvements

• Fix for scale-to-zero for Prometheus scaler no longer working (#770)
• Fix for passing default VHost for Rabbit MQ scaler no longer working (#770)
• Provide capability to define time encoding for operator (#766)

Breaking Changes

None.

Other

• Print version of metric adapter in logs (#770)

KEDA 1.4.0

License has changed from MIT to Apache 2.0 as per our CNCF donation.

Scalers:

Improvements:

• Fix scalers leaking (#684)
• Provide installation YAML in the release (#740)
• Extend RabbitMQ scaler to support count unacked messages (#700)
• Handle nil pointers and empty arrays properly in Azure Monitor Scaler (#680)
• Authenticate to AWS with dedicated role without AssumeRole permissions (#656)

Misc:

• Adding label for metrics service selection (#745)
• Provide installation YAML in the release (#740)
• Filter returned metrics from api server based on queried name (#732)
• Provide better guidance around contributions & DCO (#720)
• Add redis host and port parameter to the scaler with tests (#719)
• Remove go micro version (#718)
• Remove mit license (#716)
• Link to guide for adding new scaler docs (#715)
• Correct deploying methods (#714)
• HPA: label can have max 63 chars (#707)
• add deploymentName label if needed (#709)
• Introduce CII Badge (#691)
• Update test dependencies (#696)
• Provide project governance (#690)
• Update zero result return to be non-error inducing (#695)
• Return if kafka offset response is nil (#689)
• Add DCO and remove Microsoft CLA section (#686)
• Fix typos in MySQL scaler (#683)
• Cleanup v1.3 in changelog (#677)
• Update README to mention CNCF (#682)

KEDA 1.3.0

License has changed from MIT to Apache 2.0 as per our CNCF donation.

Scalers:

• Add Azure monitor scaler (#584)
• Introduce support for AWS pod identity (#499)
• Introduce changelog (#664)

Improvements:

• Make targetQueryValue configurable in postgreSQL scaler (#643)
• Added bootstrapServers to deprecate brokerList (#621)
• Removed the need for deploymentName label #644
• Adding Kubernetes recommended labels to resources #596

Misc:

• Changed exiting in a warning when GOROOT is not defined (#607)
• Create make release target to update versions (#610)
• Update release-build.yml (#612)
• Added successful tests (#619)
• Fixed command to log keda-operator (#622)
• Update documentation to link to new Openshift 4 sample (#625)
• Change 'create' to 'push' in release action (#627)
• Document logging levels for Operator and Metrics Server (#633)
• Provide "Support" issue template (#634)
• Removed the need for deploymentName label (#644)
• Check presence of scaleTargetRef or jobTargetRef (#648)
• Add vector keda logos (#665)
• readme: community call update (#675)

KEDA 1.2.0

New scalers:

• Support for Postgres scaler (#553)
• Support for MySQL scaler (#564)

Scalers improvments:

• TLS parameter to Redis-scaler (#540)
• Redis db index option (#577)
• Optional param for ConfigMaps and Secrets (#562)
• Remove manually adding sslmode to connection string (#558)
• ScaledObject.Status update should handle stale resource (#582)
• Improve reconcile loop (#581)
• Added SASL_SSL Plain authentication for Kafka trigger scalar to work with Event Hubs (#585)
• Address naming changes for postgresql scaler (#593)

Misc:

• Move Metrics adapter into the separate Deployment (#506)
• Fix release workflow (#559)
• Improve README (#565)
• Fix gopls location (#574)
• Move release process to Markdown in repo (#569)
• Update readme steps for deploying custom KEDA (#556)
• Update the image tags for keda and keda-metrics-adapter to 1.1.0 (#549)
• Add kubernetes and platform version to the Issue template (#589)
• Add instructions on local development and debugging (#583)
• Proposal for PR template (#586)
• Add a checkenv target (#600)
• Added links to the scaler interface documentation (#597)
• Correcting release process doc (#602)
• Mentioning problem with checksum mismatch error (#605)
• Local deployment minor fix (#603)

KEDA 1.1.0

Release notes:

New scalers:

• Provide support for Huawei Cloud CloudEye scaler (#478)
• Add kinesis stream scaler (#526)
• Add azure blob scaler (#514)

Scalers improvments:

• Add unique name for aws-sqs-queue metrics (#475)
• add kafka scaler sasl (#486)
• Event Hub scalar expansion to work with Java and C# applications (#517)
• Escape Prometheus querystring (#521)
• Change how number of pending messages is calculated and add more error handling. (#533)
• Service bus scaler pod identity fix (#534)
• Eventhub scalar fix (#537)
• Kafka scaler fix for SASL plaintext auth (#544)

Misc:

• ScaledObject Status clean up (#466)
• add default log level for operator (#468)
• ensure get the metrics that have been aggregated (#509)
• scale from zero when minReplicaCount is > 0 (#524)
• Total running Jobs must not exceed maxScale - Running jobs (#528)
• check deploymentName definition in ScaledObject (#532)