KEDA 2.5.0

We are happy to release KEDA 2.5.0 🎉

Here are some highlights:

• Introducing a new Cassandra scaler
• Introducing a new Elasticsearch scaler
• Introducing a new Graphite scaler
• GCP PubSub Scaler: subscriptionSize is deprecated in favor of mode and value
• Performance improvements
• Lot of improvements in several scalers

Learn how to deploy KEDA by reading our documentation.

New

• Add Cassandra Scaler (#2211)
• Add Elasticsearch Scaler (#2311)
• Add Graphite Scaler (#1628)
• ScaledJob: introduce MultipleScalersCalculation (#2016)
• ScaledJob: introduce RolloutStrategy (#2164)
• Add ScalersCache to reuse scalers unless they need changing (#2187)
• Cache metric names provided by KEDA Metrics Server (#2279)

Improvements

• Artemis Scaler: parse out broker config parameters in case restAPITemplate is given (#2104)
• AWS Cloudwatch Scaler: improve metric exporting logic (#2243)
• AWS Cloudwatch Scaler: return minimum value for the metric when cloudwatch returns empty list (#2345)
• Azure Log Analytics Scaler: add support to provide the metric name(#2106)
• Azure Pipelines Scaler: improve logs (#2297)
• Cron Scaler: improve validation in case start & end input is same (#2032)
• Cron Scaler: improve the cron validation (#2038)
• GCP PubSub Scaler: introduce SubscriptionSize and OldestUnackedMessageAge modes (#2266)
• GCP PubSub Scaler: add GCP identity authentication when using (#2225)
• GCP PubSub Scaler: add possibility to reference a GCP PubSub subscription by full link, including project ID (#2269)
• InfluxDB Scaler: add unsafeSsl parameter (#2157|#2320)
• Metrics API Scaler: add Bearer auth (#2028)
• MongoDB Scaler: add support to get connection data from Trigger Authorization (#2115)
• MSSQL Scaler: add support to get connection data from Trigger Authorization (#2112)
• MySQL Scaler: add support to get connection data from Trigger Authorization (#2113)
• MySQL Scaler: don't expose connection string in metricName (#2171)
• PostgreSQL Scaler: add support to get connection data from Trigger Authorization (#2114)
• Prometheus Scaler: validating values length in Prometheus query response (#2264)
• Prometheus Scaler: omit serverAddress from generated metric name (#2099)
• RabbitMQ Scaler: anonymize the host in case of HTTP failure (#2041)
• RabbitMQ Scaler: escape queueName and vhostName before use them in query string (bug fix) (#2055)
• RabbitMQ Scaler: add custom http timeout (#2086)
• RabbitMQ Scaler: add pageSize (using regex) (#2162|#2319)
• Redis Scaler: upgrade library, add username and Sentinel support (#2181)
• SeleniumGrid Scaler: add unsafeSsl parameter (#2157)
• Stan Scaler: provide support for configuring authentication through TriggerAuthentication (#2167)
• Allow setting MaxConcurrentReconciles for controllers (#2272)
• Cleanup metric names inside scalers (#2260)
• Drop support to ValueMetricType using cpu_memory_scaler (#2218)
• Improve metric name creation to be unique using scaler index inside the scaler (#2161)
• Improve error message if IdleReplicaCount are equal to MinReplicaCount to be the same as the check (#2212)
• TriggerAuthentication/Vault: add support for HashiCorp Vault namespace (Vault Enterprise) (#2085)

Deprecations

• GCP PubSub Scaler: subscriptionSize is deprecated in favor of mode and value (#2266)

Breaking Changes

• None

Other

• Ensure that context.Context values are properly passed down the stack (#2202|#2249)
• Refactor AWS related scalers to reuse the AWS clients instead of creating a new one for every GetMetrics call (#2255)
• Improve context handling in appropriate functionality in which we instantiate scalers (#2267)
• Migrate to Kubebuilder v3 (#2082)
  • API path has been changed: github.com/kedacore/keda/v2/api/v1alpha1 -> github.com/kedacore/keda/v2/apis/keda/v1alpha1
• Use Patch to set FallbackCondition on ScaledObject.Status (#2037)
• Bump Golang to 1.17.3 (#2329)
• Add Makefile mockgen targets (#2090|#2184)
• Add github action to run e2e command "on-demand" (#2241)
• Add execution url in the pr-e2e triggering comment and fix problem related with not starting with (#2306)

New Contributors

• @fbalicchia made their first contribution in #2051
• @chapurlatn made their first contribution in #2085
• @bpinske made their first contribution in #2092
• @mihaitodor made their first contribution in #2137
• @dtsioumas made their first contribution in #2157
• @Deichindianer made their first contribution in #2212
• @jerbob92 made their first contribution in #2181
• @etamarw made their first contribution in #2164
• @jmalvarezf-lmes made their first contribution in #2225
• @fivesheep made their first contribution in #2243
• @sosoftmandruszak made their first contribution in #2264
• @Friedrich42 made their first contribution in #2266
• @endersonmenezes made their first contribution in #2297
• @orphaner made their first contribution in #2311
• @allupaku made their first contribution in #2345

Full Changelog: v2.4.0...v2.5.0

Detailed Overview

• Update Python in dev containers and add .gitattributes by @JorTurFer in #2021
• validation and check in cron scaler for same start and end case by @Ritikaa96 in #2032
• chore: KEDA was accepted as CNCF Incubation project by @tomkerkhove in #2039
• Add Bearer Auth for Metrics API scaler by @JorTurFer in #2028
• Update cron scaler to parse the cron with parser instead of searching for '-' by @JorTurFer in #2038
• adapt test to #381 by @fbalicchia in #2051
• use Patch to set FallbackCondition on ScaledObject.Status by @zroubalik in #2037
• Escape queueName and vhostName in RabbitMQ Scaler before use them in query string (bug fix) by @JorTurFer in #2055
• Anonymize the host in case of HTTP failure (RabbitMQ Scaler) by @JorTurFer in #2041
• Update Makefile to ensure that bash is used instead of sh or another by @JorTurFer in #2061
• Adds explicit the option of setting KEDA_HTTP_DEFAULT_TIMEOUT by @JorTurFer in #2062
• fix typo in isScalableCache by @zroubalik in #2064
• build-tools image: bump Golang to 1.16.7 by @zroubalik in #2067
• bump golangci-lint to 1.42.0 by @zroubalik in #2066
• bump Golang to 1.16.7 by @zroubalik in #2065
• Bump bruceadams/get-release from 1.2.2 to 1.2.3 by @dependabot in #2081
• Migrate to Kubebuilder v3 by @zroubalik in #2082
• Bump github.com/aws/aws-sdk-go from 1.40.34 to 1.40.35 by @dependabot in #2088
• Bump github.com/tidwall/gjson from 1.8.1 to 1.9.0 by @dependabot in #2089
• Adds e2e test for PostgreSQL scaler by @JorTurFer in #2091
• Add custom http timeout in RabbitMQ Scaler by @JorTurFer in #2086
• TriggerAuthentication/Vault: add support for vault namespace by @chapurlatn in #2085
• ScaledJob: introduce MultipleScalersCalculation by @TsuyoshiUshio in #2016
• Graphite Scaler + e2e tests by @bpinske in #2092
• Fix dev container after Golang version update by @JorTurFer in #2102
• Raises an error when RabbitMQ regex matches more than 1 page by @JorTurFer in #2103
• Add support to provide the metric name in Azure Log Analytics Scaler by @JorTurFer in #2106
• Add e2e test for cron scaler by @JorTurFer in #2107
• Add support to get connection data from Trigger Authorization in MSSQL Scaler by @JorTurFer in #2112
• Add support to get connection data from Trigger Authorization in MySQL Scaler by @JorTurFer in #2113
• Add support to get connection data from Trigger Authorization in MongoDB Scaler by @JorTurFer in #2115
• Add support to get connection data from Trigger Authorization in PostgreSQL Scaler by @JorTurFer in #2114
• Fix MongoDB dbName property parsing by @JorTurFer in #2140
• Add Makefile mockgen targets by @mihaitodor in #2137
• Fix typo in Makefile by @JorTurFer in #2154
• Add pageSize (using regex) in RabbitMQ Scaler by @JorTurFer in #2162
• Artemis Scaler parses out broker config parameters in case restAPITemplate is given by @Ritikaa96 in #2104
• Add unsafeSsl parameter on InfluxDB by @dtsioumas in #2157
• bump Golang to 1.16.9 by @zroubalik in #2186
• bump deps by @zroubalik in #2185
• update liiklus protobuf generation by @zroubalik in #2184
• Prometheus scaler: omit serverAddress from generated metric name by @zroubalik in #2099
• Improve metric name creation to be unique using scaler index inside the scaler by @JorTurFer in #2161
• Provide support for configuring authentication through TriggerAuthentication for Stan scaler by @Ritikaa96 in #2167
• MySQL Scaler: don't expose connection string in metricName by @zroubalik in #2171
• chore: Provide configuration for automatically closing inactive issues by @tomkerkhove in #2189
• chore: Change feature as allowed label for stale issues, instead of feature-request by @tomkerkhove in #2193
• docs: Add step in release process for next release by @tomkerkhove in #2205
• Fix error message if IdleReplicaCount is equal to MinReplicaCount by @Deichindianer in #2212
• e2e: run Solace and Selenium Grid tests by @zroubalik in #2216
• Update CI to run build/unit tests on arm64 by @zroubalik in #2213
• Propagate contexts down scaler call stacks by @arschles in #2202
• Drop support to ValueMetricType using cpu_memory_scaler by @JorTurFer in #2218
• Add Cassandra scaler and tests by @nilayasiktoprak in #2211
• fix: add context to Cassandra Scaler functions by @zroubalik in #2221
• Improve Redis support by @jerbob92 in #2181
• Fix Cassandra e2e test by @zroubalik in #2238
• Fix Cassandra e2e tests part 2 by @zroubalik in #2239
• ScaledJob: introduce rolloutStrategy by @etamarw in #2164
• Fix sentinel streams e2e test by @jerbob92 in #2245
• e2e: extend deployment timeouts by @zroubalik in #2246
• Add GCP identity authentication when using Pubsub Scaler by @jmalvarezf-lmes in #2225
• e2e: extending Redis timeouts by @zroubalik in #2250
• Properly propagate context by @zroubalik in #2249
• Improve AWS Cloudwatch Scaler metric exporting logic by @fivesheep in #2243
• Add github action to run e2e command "on-demand" by @JorTurFer in #2241
• Add triggering condition to failure reaction for on-demand command by @JorTurFer in #2257
• Split the workflow to trigger e2e test in 2 different jobs by @JorTurFer in #2258
• Fix: extend Cassandra e2e test timeouts by @nilayasiktoprak in #2253
• update aws related scalers to reuse the aws clients by @fivesheep in #2255
• Set concurrency for pr-e2e action by @ahmelsayed in #2261
• Reverting #2261 by @zroubalik in #2265
• Add ScalersCache to reuse scalers unless they need changing by @ahmelsayed in #2187
• Propagating contexts to all remaining scalers by @arschles in #2267
• Validate values length for prometheus scaler by @sosoftmandruszak in #2264
• Cleanup metric names inside scalers by @JorTurFer in #2260
• bump go deps by @zroubalik in #2281
• Use a different cluster for pr e2e runs by @ahmelsayed in #2283
• beta.kubernetes.io/os nodeSelector is deprecated by @zroubalik in #2280
• Add unsafeSsl parameter in Selenium Grid scaler by @JorTurFer in #2285
• docs: Provide emphasize on preparing our Helm chart by @tomkerkhove in #2288
• Add execution url in the pr-e2e triggering comment and fix problem related with not starting with by @JorTurFer in #2306
• chore(deps): update github actions by @renovate in #2298
• GCP Pub/Sub Scaler: add oldest unacked message age metric by @Friedrich42 in #2266
• Cache metric names provided by KEDA Metrics Server by @zroubalik in #2279
• improve (azure-pipelines): log url on error by @endersonmenezes in #2297
• RabbitMQ: use int64 for pageSize to avoid conversion problems by @zroubalik in #2319
• Influx: Update client generation to fix issues by @JorTurFer in #2320
• GCP Pub/Sub Scaler: add logic to accept subscription IDs with projectID by @jmalvarezf-lmes in #2269
• Add Elasticsearch Scaler based on search template by @orphaner in #2311
• Allow setting MaxConcurrentReconciles for reconcilers by @zroubalik in #2272
• chore: Use @kedacore/keda-maintainers for code ownership by @tomkerkhove in #2326
• docs: Introduce continous container scanning with Snyk in release process by @tomkerkhove in #2325
• Bump axios from 0.21.1 to 0.21.2 in /tests by @dependabot in #2327
• fix: Remove org prefix for code owners by @tomkerkhove in #2330
• bump to Go 1.17.3 by @zroubalik in #2329
• Changelog chores by @zroubalik in #2333
• fix: Use verbose code ownership by @tomkerkhove in #2335
• Changelog: fix typo by @zroubalik in #2337
• bump dependencies by @zroubalik in #2331
• chore: use @kedacore/keda-core-contributors for code ownership by @tomkerkhove in #2344
• Handle no metrics found for AWS Cloudwatch by @allupaku in #2345
• fix: Validate TLS certificate check being disabled by @JorTurFer in #2341
• Prepare 2.5.0 release by @JorTurFer in #2346
• Use GH Action to extract the tag by @JorTurFer in #2349
• Revert GH action change and fix makefile by @JorTurFer in #2350