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# Changelog
All notable changes to this project are documented in this file.
## 0.23.0 (2020-02-06)
Adds support for service name configuration and rollback webhook
#### Features
- Implement service name override [#416](https://github.com/weaveworks/flagger/pull/416)
- Add support for gated rollback [#420](https://github.com/weaveworks/flagger/pull/420)
## 0.22.0 (2020-01-16)
Adds event dispatching through webhooks
#### Features
- Implement event dispatching webhook [#409](https://github.com/weaveworks/flagger/pull/409)
- Add general purpose event webhook [#401](https://github.com/weaveworks/flagger/pull/401)
#### Improvements
- Update Contour to v1.1 and add Linkerd header [#411](https://github.com/weaveworks/flagger/pull/411)
- Update Istio e2e to v1.4.3 [#407](https://github.com/weaveworks/flagger/pull/407)
- Update Kubernetes packages to 1.17 [#406](https://github.com/weaveworks/flagger/pull/406)
## 0.21.0 (2020-01-06)
Adds support for Contour ingress controller
#### Features
- Add support for Contour ingress controller [#397](https://github.com/weaveworks/flagger/pull/397)
- Add support for Envoy managed by Crossover via SMI [#386](https://github.com/weaveworks/flagger/pull/386)
- Extend canary target ref to Kubernetes Service kind [#372](https://github.com/weaveworks/flagger/pull/372)
#### Improvements
- Add Prometheus operator PodMonitor template to Helm chart [#399](https://github.com/weaveworks/flagger/pull/399)
- Update e2e tests to Kubernetes v1.16 [#390](https://github.com/weaveworks/flagger/pull/390)
## 0.20.4 (2019-12-03)
Adds support for taking over a running deployment without disruption
#### Improvements
- Add initialization phase to Kubernetes router [#384](https://github.com/weaveworks/flagger/pull/384)
- Add canary controller interface and Kubernetes deployment kind implementation [#378](https://github.com/weaveworks/flagger/pull/378)
#### Fixes
- Skip primary check on skip analysis [#380](https://github.com/weaveworks/flagger/pull/380)
## 0.20.3 (2019-11-13)
Adds wrk to load tester tools and the App Mesh gateway chart to Flagger Helm repository
#### Improvements
- Add wrk to load tester tools [#368](https://github.com/weaveworks/flagger/pull/368)
- Add App Mesh gateway chart [#365](https://github.com/weaveworks/flagger/pull/365)
## 0.20.2 (2019-11-07)
Adds support for exposing canaries outside the cluster using App Mesh Gateway annotations
#### Improvements
- Expose canaries on public domains with App Mesh Gateway [#358](https://github.com/weaveworks/flagger/pull/358)
#### Fixes
- Use the specified replicas when scaling up the canary [#363](https://github.com/weaveworks/flagger/pull/363)
## 0.20.1 (2019-11-03)
Fixes promql execution and updates the load testing tools
#### Improvements
- Update load tester Helm tools [#8349dd1](https://github.com/weaveworks/flagger/commit/8349dd1cda59a741c7bed9a0f67c0fc0fbff4635)
- e2e testing: update providers [#346](https://github.com/weaveworks/flagger/pull/346)
#### Fixes
- Fix Prometheus query escape [#353](https://github.com/weaveworks/flagger/pull/353)
- Updating hey release link [#350](https://github.com/weaveworks/flagger/pull/350)
## 0.20.0 (2019-10-21)
Adds support for [A/B Testing](https://docs.flagger.app/usage/progressive-delivery#traffic-mirroring) and retry policies when using App Mesh
#### Features
- Implement App Mesh A/B testing based on HTTP headers match conditions [#340](https://github.com/weaveworks/flagger/pull/340)
- Implement App Mesh HTTP retry policy [#338](https://github.com/weaveworks/flagger/pull/338)
- Implement metrics server override [#342](https://github.com/weaveworks/flagger/pull/342)
#### Improvements
- Add the app/name label to services and primary deployment [#333](https://github.com/weaveworks/flagger/pull/333)
- Allow setting Slack and Teams URLs with env vars [#334](https://github.com/weaveworks/flagger/pull/334)
- Refactor Gloo integration [#344](https://github.com/weaveworks/flagger/pull/344)
#### Fixes
- Generate unique names for App Mesh virtual routers and routes [#336](https://github.com/weaveworks/flagger/pull/336)
## 0.19.0 (2019-10-08)
Adds support for canary and blue/green [traffic mirroring](https://docs.flagger.app/usage/progressive-delivery#traffic-mirroring)
#### Features
- Add traffic mirroring for Istio service mesh [#311](https://github.com/weaveworks/flagger/pull/311)
- Implement canary service target port [#327](https://github.com/weaveworks/flagger/pull/327)
#### Improvements
- Allow gPRC protocol for App Mesh [#325](https://github.com/weaveworks/flagger/pull/325)
- Enforce blue/green when using Kubernetes networking [#326](https://github.com/weaveworks/flagger/pull/326)
#### Fixes
- Fix port discovery diff [#324](https://github.com/weaveworks/flagger/pull/324)
- Helm chart: Enable Prometheus scraping of Flagger metrics [#2141d88](https://github.com/weaveworks/flagger/commit/2141d88ce1cc6be220dab34171c215a334ecde24)
## 0.18.6 (2019-10-03)
Adds support for App Mesh conformance tests and latency metric checks
#### Improvements
- Add support for acceptance testing when using App Mesh [#322](https://github.com/weaveworks/flagger/pull/322)
- Add Kustomize installer for App Mesh [#310](https://github.com/weaveworks/flagger/pull/310)
- Update Linkerd to v2.5.0 and Prometheus to v2.12.0 [#323](https://github.com/weaveworks/flagger/pull/323)
#### Fixes
- Fix slack/teams notification fields mapping [#318](https://github.com/weaveworks/flagger/pull/318)
## 0.18.5 (2019-10-02)
Adds support for [confirm-promotion](https://docs.flagger.app/how-it-works#webhooks) webhooks and blue/green deployments when using a service mesh
#### Features
- Implement confirm-promotion hook [#307](https://github.com/weaveworks/flagger/pull/307)
- Implement B/G for service mesh providers [#305](https://github.com/weaveworks/flagger/pull/305)
#### Improvements
- Canary promotion improvements to avoid dropping in-flight requests [#310](https://github.com/weaveworks/flagger/pull/310)
- Update end-to-end tests to Kubernetes v1.15.3 and Istio 1.3.0 [#306](https://github.com/weaveworks/flagger/pull/306)
#### Fixes
- Skip primary check for App Mesh [#315](https://github.com/weaveworks/flagger/pull/315)
## 0.18.4 (2019-09-08)
Adds support for NGINX custom annotations and Helm v3 acceptance testing
#### Features
- Add annotations prefix for NGINX ingresses [#293](https://github.com/weaveworks/flagger/pull/293)
- Add wide columns in CRD [#289](https://github.com/weaveworks/flagger/pull/289)
- loadtester: implement Helm v3 test command [#296](https://github.com/weaveworks/flagger/pull/296)
- loadtester: add gPRC health check to load tester image [#295](https://github.com/weaveworks/flagger/pull/295)
#### Fixes
- loadtester: fix tests error logging [#286](https://github.com/weaveworks/flagger/pull/286)
## 0.18.3 (2019-08-22)
Adds support for tillerless helm tests and protobuf health checking
#### Features
- loadtester: add support for tillerless helm [#280](https://github.com/weaveworks/flagger/pull/280)
- loadtester: add support for protobuf health checking [#280](https://github.com/weaveworks/flagger/pull/280)
#### Improvements
- Set HTTP listeners for AppMesh virtual routers [#272](https://github.com/weaveworks/flagger/pull/272)
#### Fixes
- Add missing fields to CRD validation spec [#271](https://github.com/weaveworks/flagger/pull/271)
- Fix App Mesh backends validation in CRD [#281](https://github.com/weaveworks/flagger/pull/281)
## 0.18.2 (2019-08-05)
Fixes multi-port support for Istio
#### Fixes
- Fix port discovery for multiple port services [#267](https://github.com/weaveworks/flagger/pull/267)
#### Improvements
- Update e2e testing to Istio v1.2.3, Gloo v0.18.8 and NGINX ingress chart v1.12.1 [#268](https://github.com/weaveworks/flagger/pull/268)
## 0.18.1 (2019-07-30)
Fixes Blue/Green style deployments for Kubernetes and Linkerd providers
#### Fixes
- Fix Blue/Green metrics provider and add e2e tests [#261](https://github.com/weaveworks/flagger/pull/261)
## 0.18.0 (2019-07-29)
Adds support for [manual gating](https://docs.flagger.app/how-it-works#manual-gating) and pausing/resuming an ongoing analysis
#### Features
- Implement confirm rollout gate, hook and API [#251](https://github.com/weaveworks/flagger/pull/251)
#### Improvements
- Refactor canary change detection and status [#240](https://github.com/weaveworks/flagger/pull/240)
- Implement finalising state [#257](https://github.com/weaveworks/flagger/pull/257)
- Add gRPC load testing tool [#248](https://github.com/weaveworks/flagger/pull/248)
#### Breaking changes
- Due to the status sub-resource changes in [#240](https://github.com/weaveworks/flagger/pull/240), when upgrading Flagger the canaries status phase will be reset to `Initialized`
- Upgrading Flagger with Helm will fail due to Helm poor support of CRDs, see [workaround](https://github.com/weaveworks/flagger/issues/223)
## 0.17.0 (2019-07-08)
Adds support for Linkerd (SMI Traffic Split API), MS Teams notifications and HA mode with leader election
#### Features
- Add Linkerd support [#230](https://github.com/weaveworks/flagger/pull/230)
- Implement MS Teams notifications [#235](https://github.com/weaveworks/flagger/pull/235)
- Implement leader election [#236](https://github.com/weaveworks/flagger/pull/236)
#### Improvements
- Add [Kustomize](https://docs.flagger.app/install/flagger-install-on-kubernetes#install-flagger-with-kustomize) installer [#232](https://github.com/weaveworks/flagger/pull/232)
- Add Pod Security Policy to Helm chart [#234](https://github.com/weaveworks/flagger/pull/234)
## 0.16.0 (2019-06-23)
Adds support for running [Blue/Green deployments](https://docs.flagger.app/usage/blue-green) without a service mesh or ingress controller
#### Features
- Allow blue/green deployments without a service mesh provider [#211](https://github.com/weaveworks/flagger/pull/211)
- Add the service mesh provider to the canary spec [#217](https://github.com/weaveworks/flagger/pull/217)
- Allow multi-port services and implement port discovery [#207](https://github.com/weaveworks/flagger/pull/207)
#### Improvements
- Add [FAQ page](https://docs.flagger.app/faq) to docs website
- Switch to go modules in CI [#218](https://github.com/weaveworks/flagger/pull/218)
- Update e2e testing to Kubernetes Kind 0.3.0 and Istio 1.2.0
#### Fixes
- Update the primary HPA on canary promotion [#216](https://github.com/weaveworks/flagger/pull/216)
## 0.15.0 (2019-06-12)
Adds support for customising the Istio [traffic policy](https://docs.flagger.app/how-it-works#istio-routing) in the canary service spec
#### Features
- Generate Istio destination rules and allow traffic policy customisation [#200](https://github.com/weaveworks/flagger/pull/200)
#### Improvements
- Update Kubernetes packages to 1.14 and use go modules instead of dep [#202](https://github.com/weaveworks/flagger/pull/202)
## 0.14.1 (2019-06-05)
Adds support for running [acceptance/integration tests](https://docs.flagger.app/how-it-works#integration-testing) with Helm test or Bash Bats using pre-rollout hooks
#### Features
- Implement Helm and Bash pre-rollout hooks [#196](https://github.com/weaveworks/flagger/pull/196)
#### Fixes
- Fix promoting canary when max weight is not a multiple of step [#190](https://github.com/weaveworks/flagger/pull/190)
- Add ability to set Prometheus url with custom path without trailing '/' [#197](https://github.com/weaveworks/flagger/pull/197)
## 0.14.0 (2019-05-21)
Adds support for Service Mesh Interface and [Gloo](https://docs.flagger.app/usage/gloo-progressive-delivery) ingress controller
#### Features
- Add support for SMI (Istio weighted traffic) [#180](https://github.com/weaveworks/flagger/pull/180)
- Add support for Gloo ingress controller (weighted traffic) [#179](https://github.com/weaveworks/flagger/pull/179)
## 0.13.2 (2019-04-11)
Fixes for Jenkins X deployments (prevent the jx GC from removing the primary instance)
#### Fixes
- Do not copy labels from canary to primary deployment [#178](https://github.com/weaveworks/flagger/pull/178)
#### Improvements
- Add NGINX ingress controller e2e and unit tests [#176](https://github.com/weaveworks/flagger/pull/176)
## 0.13.1 (2019-04-09)
Fixes for custom metrics checks and NGINX Prometheus queries
#### Fixes
- Fix promql queries for custom checks and NGINX [#174](https://github.com/weaveworks/flagger/pull/174)
## 0.13.0 (2019-04-08)
Adds support for [NGINX](https://docs.flagger.app/usage/nginx-progressive-delivery) ingress controller
#### Features
- Add support for nginx ingress controller (weighted traffic and A/B testing) [#170](https://github.com/weaveworks/flagger/pull/170)
- Add Prometheus add-on to Flagger Helm chart for App Mesh and NGINX [79b3370](https://github.com/weaveworks/flagger/pull/170/commits/79b337089294a92961bc8446fd185b38c50a32df)
#### Fixes
- Fix duplicate hosts Istio error when using wildcards [#162](https://github.com/weaveworks/flagger/pull/162)
## 0.12.0 (2019-04-29)
Adds support for [SuperGloo](https://docs.flagger.app/install/flagger-install-with-supergloo)
#### Features
- Supergloo support for canary deployment (weighted traffic) [#151](https://github.com/weaveworks/flagger/pull/151)
## 0.11.1 (2019-04-18)
Move Flagger and the load tester container images to Docker Hub
#### Features
- Add Bash Automated Testing System support to Flagger tester for running acceptance tests as pre-rollout hooks
## 0.11.0 (2019-04-17)
Adds pre/post rollout [webhooks](https://docs.flagger.app/how-it-works#webhooks)
#### Features
- Add `pre-rollout` and `post-rollout` webhook types [#147](https://github.com/weaveworks/flagger/pull/147)
#### Improvements
- Unify App Mesh and Istio builtin metric checks [#146](https://github.com/weaveworks/flagger/pull/146)
- Make the pod selector label configurable [#148](https://github.com/weaveworks/flagger/pull/148)
#### Breaking changes
- Set default `mesh` Istio gateway only if no gateway is specified [#141](https://github.com/weaveworks/flagger/pull/141)
## 0.10.0 (2019-03-27)
Adds support for App Mesh
#### Features
- AWS App Mesh integration
[#107](https://github.com/weaveworks/flagger/pull/107)
[#123](https://github.com/weaveworks/flagger/pull/123)
#### Improvements
- Reconcile Kubernetes ClusterIP services [#122](https://github.com/weaveworks/flagger/pull/122)
#### Fixes
- Preserve pod labels on canary promotion [#105](https://github.com/weaveworks/flagger/pull/105)
- Fix canary status Prometheus metric [#121](https://github.com/weaveworks/flagger/pull/121)
## 0.9.0 (2019-03-11)
Allows A/B testing scenarios where instead of weighted routing, the traffic is split between the
primary and canary based on HTTP headers or cookies.
#### Features
- A/B testing - canary with session affinity [#88](https://github.com/weaveworks/flagger/pull/88)
#### Fixes
- Update the analysis interval when the custom resource changes [#91](https://github.com/weaveworks/flagger/pull/91)
## 0.8.0 (2019-03-06)
Adds support for CORS policy and HTTP request headers manipulation
#### Features
- CORS policy support [#83](https://github.com/weaveworks/flagger/pull/83)
- Allow headers to be appended to HTTP requests [#82](https://github.com/weaveworks/flagger/pull/82)
#### Improvements
- Refactor the routing management
[#72](https://github.com/weaveworks/flagger/pull/72)
[#80](https://github.com/weaveworks/flagger/pull/80)
- Fine-grained RBAC [#73](https://github.com/weaveworks/flagger/pull/73)
- Add option to limit Flagger to a single namespace [#78](https://github.com/weaveworks/flagger/pull/78)
## 0.7.0 (2019-02-28)
Adds support for custom metric checks, HTTP timeouts and HTTP retries
#### Features
- Allow custom promql queries in the canary analysis spec [#60](https://github.com/weaveworks/flagger/pull/60)
- Add HTTP timeout and retries to canary service spec [#62](https://github.com/weaveworks/flagger/pull/62)
## 0.6.0 (2019-02-25)
Allows for [HTTPMatchRequests](https://istio.io/docs/reference/config/istio.networking.v1alpha3/#HTTPMatchRequest)
and [HTTPRewrite](https://istio.io/docs/reference/config/istio.networking.v1alpha3/#HTTPRewrite)
to be customized in the service spec of the canary custom resource.
#### Features
- Add HTTP match conditions and URI rewrite to the canary service spec [#55](https://github.com/weaveworks/flagger/pull/55)
- Update virtual service when the canary service spec changes
[#54](https://github.com/weaveworks/flagger/pull/54)
[#51](https://github.com/weaveworks/flagger/pull/51)
#### Improvements
- Run e2e testing on [Kubernetes Kind](https://github.com/kubernetes-sigs/kind) for canary promotion
[#53](https://github.com/weaveworks/flagger/pull/53)
## 0.5.1 (2019-02-14)
Allows skipping the analysis phase to ship changes directly to production
#### Features
- Add option to skip the canary analysis [#46](https://github.com/weaveworks/flagger/pull/46)
#### Fixes
- Reject deployment if the pod label selector doesn't match `app: <DEPLOYMENT_NAME>` [#43](https://github.com/weaveworks/flagger/pull/43)
## 0.5.0 (2019-01-30)
Track changes in ConfigMaps and Secrets [#37](https://github.com/weaveworks/flagger/pull/37)
#### Features
- Promote configmaps and secrets changes from canary to primary
- Detect changes in configmaps and/or secrets and (re)start canary analysis
- Add configs checksum to Canary CRD status
- Create primary configmaps and secrets at bootstrap
- Scan canary volumes and containers for configmaps and secrets
#### Fixes
- Copy deployment labels from canary to primary at bootstrap and promotion
## 0.4.1 (2019-01-24)
Load testing webhook [#35](https://github.com/weaveworks/flagger/pull/35)
#### Features
- Add the load tester chart to Flagger Helm repository
- Implement a load test runner based on [rakyll/hey](https://github.com/rakyll/hey)
- Log warning when no values are found for Istio metric due to lack of traffic
#### Fixes
- Run wekbooks before the metrics checks to avoid failures when using a load tester
## 0.4.0 (2019-01-18)
Restart canary analysis if revision changes [#31](https://github.com/weaveworks/flagger/pull/31)
#### Breaking changes
- Drop support for Kubernetes 1.10
#### Features
- Detect changes during canary analysis and reset advancement
- Add status and additional printer columns to CRD
- Add canary name and namespace to controller structured logs
#### Fixes
- Allow canary name to be different to the target name
- Check if multiple canaries have the same target and log error
- Use deep copy when updating Kubernetes objects
- Skip readiness checks if canary analysis has finished
## 0.3.0 (2019-01-11)
Configurable canary analysis duration [#20](https://github.com/weaveworks/flagger/pull/20)
#### Breaking changes
- Helm chart: flag `controlLoopInterval` has been removed
#### Features
- CRD: canaries.flagger.app v1alpha3
- Schedule canary analysis independently based on `canaryAnalysis.interval`
- Add analysis interval to Canary CRD (defaults to one minute)
- Make autoscaler (HPA) reference optional
## 0.2.0 (2019-01-04)
Webhooks [#18](https://github.com/weaveworks/flagger/pull/18)
#### Features
- CRD: canaries.flagger.app v1alpha2
- Implement canary external checks based on webhooks HTTP POST calls
- Add webhooks to Canary CRD
- Move docs to gitbook [docs.flagger.app](https://docs.flagger.app)
## 0.1.2 (2018-12-06)
Improve Slack notifications [#14](https://github.com/weaveworks/flagger/pull/14)
#### Features
- Add canary analysis metadata to init and start Slack messages
- Add rollback reason to failed canary Slack messages
## 0.1.1 (2018-11-28)
Canary progress deadline [#10](https://github.com/weaveworks/flagger/pull/10)
#### Features
- Rollback canary based on the deployment progress deadline check
- Add progress deadline to Canary CRD (defaults to 10 minutes)
## 0.1.0 (2018-11-25)
First stable release
#### Features
- CRD: canaries.flagger.app v1alpha1
- Notifications: post canary events to Slack
- Instrumentation: expose Prometheus metrics for canary status and traffic weight percentage
- Autoscaling: add HPA reference to CRD and create primary HPA at bootstrap
- Bootstrap: create primary deployment, ClusterIP services and Istio virtual service based on CRD spec
## 0.0.1 (2018-10-07)
Initial semver release
#### Features
- Implement canary rollback based on failed checks threshold
- Scale up the deployment when canary revision changes
- Add OpenAPI v3 schema validation to Canary CRD
- Use CRD status for canary state persistence
- Add Helm charts for Flagger and Grafana
- Add canary analysis Grafana dashboard
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