v2.6.0

Highlights

Flux v2.6.0 is a feature release. Users are encouraged to upgrade for the best experience.

For a compressive overview of new features and API changes included in this release, please refer to the Announcing Flux 2.6 GA blog post.

Overview of the new features:

• General availability release for the Flux OCI Artifacts APIs and flux artifact commands
• Support for OCI digests pinning (ImagePolicy, ImageUpdateAutomation)
• Object-level workload identity authentication (OCIRepository, ImageRepository, Kustomization, Alert Provider)
• Cache registry credentials for cloud providers (OCIRepository, ImageRepository)
• Git HTTP/S Mutual TLS authentication (GitRepository, ImageUpdateAutomation)
• Support for sparse checkout (GitRepository)
• Support for GitHub App authentication (Alert Provider)
• Support for managed Identity authentication to Azure Event Hub (Alert Provider)
• Customize the ID of the Git commit status with CEL expressions (Alert Provider)
• WaitForTermination deletion policy (Kustomization)
• DisableChartDigestTracking feature gate (HelmRelease)

❤️ Big thanks to all the Flux contributors that helped us with this release!

Kubernetes compatibility

This release is compatible with the following Kubernetes versions:

Kubernetes version	Minimum required
v1.31	>= 1.31.0
v1.32	>= 1.32.0
v1.33	>= 1.33.0

Note

Note that the Flux project offers support only for the latest three minor versions of Kubernetes.
Backwards compatibility with older versions of Kubernetes and OpenShift is offered by vendors such as
ControlPlane that provide enterprise support for Flux.

OpenShift compatibility

Flux can be installed on Red Hat OpenShift cluster directly from OperatorHub using Flux Operator.
The operator allows the configuration of Flux multi-tenancy lockdown, network policies, persistent storage, sharding, vertical scaling and the synchronization of the cluster state from Git repositories, OCI artifacts, and S3-compatible storage.

Upgrade procedure

Upgrade Flux from v2.5.0 to v2.6.0 by following the upgrade guide.

To upgrade the APIs, make sure the new CRDs and controllers are deployed, and then change the manifests in Git:

1. Set apiVersion: source.toolkit.fluxcd.io/v1 in the YAML files that contain OCIRepository definitions.
2. Add an annotation api.fluxcd.io/upgrade: "v2.6.0" to the OCIRepository resources. (this is not required if Flux Operator is used for upgrade)
3. Commit, push, and reconcile the API version changes.

Bumping the APIs version in manifests can be done gradually.
It is advised to not delay this procedure as the deprecated versions will be removed after 6 months.

Components changelog

• source-controller v1.6.0
• kustomize-controller v1.6.0
• notification-controller v1.6.0
• helm-controller v1.3.0
• image-reflector-controller v0.35.0
• image-automation-controller v0.41.0

New Documentation

• OCIRepository v1 specification
• AWS integrations
• Azure integrations
• GCP integrations

What's Changed

• fix: correct name on github app secret by @NotAwar in #5202
• Update RFC 0008 and RFC 0009 milestones by @matheuscscp in #5141
• Update kustomize-controller to v1.5.1 by @fluxcdbot in #5214
• Update backport labels for 2.5 by @matheuscscp in #5215
• Fix command debug hr not taking targetPath into account by @matheuscscp in #5227
• Remove redundant space. by @laiminhtrung1997 in #5038
• ci: switch to goreleaser changelog generation by @y-eight in #5284
• change: use the default ephemeral GITHUB_TOKEN instead of the static one by @piontec in #5282
• add: OSSF scorecard configuration file - ignore false-positive by @piontec in #5287
• build(deps): bump helm.sh/helm/v3 from 3.17.0 to 3.17.3 by @dependabot in #5295
• Allow to pull/push artifacts to insecure registries without TLS by @mottetm in #5299
• [RFC-0010] Multi-Tenant Workload Identity by @matheuscscp in #5209
• flux diff: Reset target struct before decoding by @maboehm in #5302
• fix: allow recursive dry-run over local sources by @niveau0 in #5219
• Run conformance tests for Kubernetes 1.33.0 by @stefanprodan in #5318
• Update to Kubernetes 1.33.0 and Go 1.24.0 by @stefanprodan in #5323
• [RFC-0010] Remove EKS Pod Identity from the proposal by @matheuscscp in #5309
• [RFC-0010] Add RBAC for creating service account tokens by @matheuscscp in #5332
• Upgrade fluxcd/pkg auth, oci, git and git/gogit by @matheuscscp in #5333
• Fix exit code handling in get command by @dgunzy in #5338
• build(deps): bump the ci group across 1 directory with 18 updates by @dependabot in #5325
• Fix flux trace for HRs from OCIRepositorys by @makkes in #5349
• Fix e2e workflow by @makkes in #5351
• [RFC-0010] Update RFC to include opt-in feature gate by @matheuscscp in #5354
• [RFC-0010] Update RFC feature gate behavior by @matheuscscp in #5355
• Upgrade fluxcd/pkg packages by @matheuscscp in #5356
• Upgrade fluxcd/pkg packages by @matheuscscp in #5357
• Set Kubernetes 1.31 as min supported version by @stefanprodan in #5364
• Update dependencies by @matheuscscp in #5366
• Update toolkit components by @fluxcdbot in #5368
• Promote artifact commands to stable by @matheuscscp in #5369
• Add --interval and --reflect-digest flags to flux create image policy by @matheuscscp in #5345
• Update CLI to OCIRepository v1 (GA) by @stefanprodan in #5371
• Update dependabot config by @stefanprodan in #5373
• Update toolkit components by @fluxcdbot in #5370

New Contributors

• @NotAwar made their first contribution in #5202
• @laiminhtrung1997 made their first contribution in #5038
• @y-eight made their first contribution in #5284
• @piontec made their first contribution in #5282
• @mottetm made their first contribution in #5299
• @maboehm made their first contribution in #5302
• @niveau0 made their first contribution in #5219
• @dgunzy made their first contribution in #5338

Full Changelog: v2.5.0...v2.6.0

v2.5.1

Highlights

Flux v2.5.1 is a patch release which comes with various fixes. Users are encouraged to upgrade for the best experience.

Fixes:

• Fix a bug introduced in kustomize-controller v1.5.0 that was causing spurious logging for deprecated API versions and health check failures.
• Sanitize the kustomize-controller logs when encountering errors during SOPS decryption.

Components changelog

• kustomize-controller v1.5.1

CLI Changelog

• PR #5215 - @matheuscscp - Update backport labels for 2.5
• PR #5214 - @fluxcdbot - Update kustomize-controller to v1.5.1

v2.5.0

Highlights

Flux v2.5.0 is a feature release. Users are encouraged to upgrade for the best experience.

For a compressive overview of new features and API changes included in this release,
please refer to the Announcing Flux 2.5 GA blog post.

Overview of the new features:

• Support for GitHub App authentication (GitRepository and ImageUpdateAutomation API)
• Custom Health Checks using CEL (Kustomization API)
• Fine-grained control of garbage collection (Kustomization API)
• Enable decryption of secrets generated by Kustomize components (Kustomization API)
• Support for custom event metadata from annotations (Alert API)
• Git commit status updates for Flux Kustomizations with OCIRepository sources (Alert API)
• Resource filtering using CEL for webhook receivers (Receiver API)
• Debug commands for Flux Kustomizations and HelmReleases (Flux CLI)

❤️ Big thanks to all the Flux contributors that helped us with this release!

Kubernetes compatibility

This release is compatible with the following Kubernetes versions:

Kubernetes version	Minimum required
v1.30	>= 1.30.0
v1.31	>= 1.31.0
v1.32	>= 1.32.0

Note

Note that the Flux project offers support only for the latest three minor versions of Kubernetes.
Backwards compatibility with older versions of Kubernetes and OpenShift is offered by vendors such as
ControlPlane that provide enterprise support for Flux.

OpenShift compatibility

Flux can be installed on Red Hat OpenShift cluster directly from OperatorHub using
Flux Operator.
The operator allows the configuration of Flux multi-tenancy lockdown, network policies,
persistent storage, sharding, vertical scaling and the synchronization
of the cluster state from Git repositories, OCI artifacts and S3-compatible storage.

Upgrade procedure

Upgrade Flux from v2.4.0 to v2.5.0 by following the upgrade guide.

There are no new API versions in this release, so no changes are required in the YAML manifests containing Flux resources.

Components changelog

• source-controller v1.5.0
• kustomize-controller v1.5.0
• notification-controller v1.5.0
• helm-controller v1.2.0
• image-reflector-controller v0.34.0
• image-automation-controller v0.40.0

CLI Changelog

• PR #5204 - @stefanprodan - Update kubectl in flux-cli image
• PR #5203 - @stefanprodan - Update flux-cli image
• PR #5200 - @stefanprodan - Update Kubernetes min supported version to 1.30
• PR #5199 - @matheuscscp - Update integration tests dependencies for Flux 2.5
• PR #5195 - @fluxcdbot - Update toolkit components
• PR #5192 - @fluxcdbot - Update toolkit components
• PR #5190 - @dependabot[bot] - build(deps): bump github.com/distribution/distribution/v3 from 3.0.0-rc.2 to 3.0.0-rc.3
• PR #5188 - @matheuscscp - Upgrade pkg/runtime
• PR #5187 - @stefanprodan - Update conformance test suite
• PR #5181 - @dependabot[bot] - build(deps): bump the ci group across 1 directory with 13 updates
• PR #5176 - @YvanGuidoin - fix: align flux diff skipping with kustomize-controller
• PR #5175 - @stefanprodan - Update dependencies
• PR #5151 - @stefanprodan - [RFC-0009] Custom Health Checks using CEL expressions
• PR #5146 - @sjorsholtrop-ritense - Improve "flux resume" error message on non-existent object
• PR #5142 - @matheuscscp - Fix create command always using imageRepositoryType
• PR #5137 - @scottrigby - Add OpenShift 4.16 & 4.17 to conformance testing
• PR #5117 - @stefanprodan - Implement flux debug kustomization command
• PR #5114 - @stefanprodan - Update dependencies to Kubernetes 1.32.0 and Go 1.23.0
• PR #5111 - @stefanprodan - Run conformance tests for Kubernetes 1.32.0
• PR #5107 - @darkowlzz - workflows: Use setup-terraform to install latest
• PR #5106 - @stefanprodan - Implement flux debug helmrelease command
• PR #5105 - @stefanprodan - Update fluxcd/pkg dependencies
• PR #5104 - @dependabot[bot] - build(deps): bump the ci group across 1 directory with 11 updates
• PR #5103 - @dipti-pai - [RFC-007] Flux cli support for GitHub app authentication
• PR #5099 - @bkreitch - fix misplaced quotes
• PR #5073 - @mloskot - docs: Mention Flux upgrade guide in release notes
• PR #5071 - @milas - fix: skip remote Kustomizations on recursive diff
• PR #5068 - @h3nryc0ding - fix(cli): confusing error message for missing kind
• PR #5060 - @jdewinne - Use replicated-actions in conformance tests

v2.4.0

Highlights

Flux v2.4.0 is a feature release. Users are encouraged to upgrade for the best experience.

For a comprehensive overview of new features and API changes included in this release, please refer to the Announcing Flux 2.4 GA blog post.

This release marks the General Availability (GA) of Flux Bucket API. The Bucket v1 API comes with new features including: proxy support, mTLS and custom STS configuration for AWS S3 and MinIO LDAP authentication.

The GitRepository v1 API gains support for OIDC authentication. Starting with this version, you can authenticate against Azure DevOps repositories using AKS Workload Identity.

The OCIRepository v1beta2 API gains support for proxy configuration thus allowing dedicated HTTP/S Proxy authentication on multi-tenant Kubernetes clusters.

The HelmRelease v2 API gains support for disabling JSON schema validation of the Helm release values during installation and upgrade. And allows adopting existing Kubernetes resources during Helm release installation.

The Flux controllers are now built with Go 1.23 and their dependencies have been updated to Kubernetes 1.31, Helm 3.16, SOPS 3.9 Cosign 2.4 and Notation 1.2.

❤️ Big thanks to all the Flux contributors that helped us with this release!

Kubernetes compatibility

This release is compatible with the following Kubernetes versions:

Kubernetes version	Minimum required
v1.29	>= 1.29.0
v1.30	>= 1.30.0
v1.31	>= 1.31.0

Note

Note that the Flux project offers support only for the latest three minor versions of Kubernetes.
Backwards compatibility with older versions of Kubernetes and OpenShift is offered by vendors such as
ControlPlane that provide enterprise support for Flux.

OpenShift compatibility

Flux can be installed on Red Hat OpenShift cluster directly from OperatorHub using Flux Operator.
The operator allows the configuration of Flux multi-tenancy lockdown, network policies, persistent storage, sharding, vertical scaling and the synchronization of the cluster state from Git repositories, OCI artifacts and S3-compatible storage.

API changes

Bucket v1

The Bucket kind was promoted from v1beta2 to v1 (GA).

The v1 API is backwards compatible with v1beta2.

New fields:

• .spec.proxySecretRef allows configuring HTTP/S Proxy authentication for the S3-compatible storage service.
• .spec.certSecretRef allows custom TLS client certificate and CA for secure communication with the S3-compatible storage service.
• .spec.sts allows custom STS configuration for AWS S3 and MinIO LDAP authentication.

GitRepository v1

The GitRepository kind gains new optional fields with no breaking changes.

New fields:

• .spec.provider allows specifying an OIDC provider used for authentication purposes. Currently, only the azure provider is supported.

OCIRepository v1beta2

The OCIRepository kind gains new optional fields with no breaking changes.

New fields:

• .spec.proxySecretRef allows configuring HTTP/S Proxy authentication for the container registry service.

HelmRelease v2

The HelmRelease kind gains new optional fields with no breaking changes.

New fields:

• .spec.install.disableSchemaValidation allows disabling the JSON schema validation of the Helm release values during installation.
• .spec.upgrade.disableSchemaValidation allows disabling the JSON schema validation of the Helm release values during upgrade.

Upgrade procedure

Upgrade Flux from v2.3.0 to v2.4.0 either by rerunning bootstrap or by using the Flux GitHub Action.

To upgrade the APIs, make sure the new CRDs and controllers are deployed, and then change the manifests in Git:

1. Set apiVersion: source.toolkit.fluxcd.io/v1 in the YAML files that contain Bucket definitions.
2. Commit, push and reconcile the API version changes.

Bumping the APIs version in manifests can be done gradually.
It is advised to not delay this procedure as the deprecated versions will be removed after 6 months.

Components changelog

• source-controller v1.4.0 v1.4.1
• kustomize-controller v1.4.0
• notification-controller v1.4.0
• helm-controller v1.1.0
• image-reflector-controller v0.33.0
• image-automation-controller v0.39.0

New Documentation

• Bucket v1 specification
• Azure DevOps OIDC auth configuration

CLI Changelog

• PR #5014 - @stefanprodan - Update Kubernetes dependencies to v1.31.1
• PR #5011 - @stefanprodan - Remove TLS deprecated flags from flux create secret
• PR #5010 - @stefanprodan - Add flux create secret proxy command
• PR #5009 - @stefanprodan - Add --proxy-secret-ref to flux create source commands
• PR #5008 - @stefanprodan - Promote bucket commands to GA
• PR #5007 - @stefanprodan - Run conformance tests for Kubernetes 1.29-1.31
• PR #5005 - @fluxcdbot - Update toolkit components
• PR #5004 - @fluxcdbot - Update source-controller to v1.4.1
• PR #4986 - @dipti-pai - [RFC-0007] Add --provider flag to flux create source git
• PR #4970 - @JasonTheDeveloper - Update notaryproject/notation-go to 1.2.1
• PR #4967 - @mxtw - tests: use tempdir to avoid manual gc
• PR #4959 - @stefanprodan - Fix GitHub bootstrap for repositories with custom properties
• PR #4948 - @harshitasao - fix: fixed GHA token-permission and pinned dependencies issue
• PR #4939 - @bkreitch - Recursively diff Kustomizations
• PR #4936 - @stefanprodan - Build with Go 1.23
• PR #4934 - @stefanprodan - Update dependencies to Kubernetes v1.31.0
• PR #4922 - @bkreitch - Stop spinner on cancel of flux diff kustomization
• PR #4918 - @matheuscscp - Fix reconcile helmrelease command description
• PR #4892 - @stefanprodan - Run conformance tests for Kubernetes v1.31
• PR #4871 - @harshitasao - changed the scorecard badge link to the standard format
• PR #4866 - @nagyv - Introduce visibility flag for bootstrap gitlab
• PR #4863 - @stefanprodan - Update conformance tests to Kubernetes v1.30.2
• PR #4845 - @stefanprodan - Run ARM64 e2e tests on GitHub runners
• PR #4842 - @stefanprodan - Add part-of label to controllers base
• PR #4835 - @stefanprodan - ci: Adapt config to GoRelease v2
• PR #4806 - @dipti-pai - [RFC] Passwordless authentication for Git repositories

v2.3.0

Highlights

Flux v2.3.0 is a feature release. Users are encouraged to upgrade for the best experience.

For a comprehensive overview of new features and API changes included in this release, please refer to the Announcing Flux 2.3 GA blog post.

This release marks the General Availability (GA) of Flux Helm features and APIs, including helm-controller, the HelmRelease, HelmChart, and HelmRepository APIs.

The HelmRepository v2 API comes with new features, such as the ability to reference Helm charts from OCIRepository sources, reuse existing HelmChart resources, and verify the integrity of Helm chart artifacts signed with Notary Notation.

❤️ Big thanks to all the Flux contributors that helped us with this release!

Kubernetes compatibility

This release is compatible with the following Kubernetes versions:

Kubernetes version	Minimum required
v1.28	>= 1.28.0
v1.29	>= 1.29.0
v1.30	>= 1.30.0

Note

Note that the Flux project offers support only for the latest three minor versions of Kubernetes.
Backwards compatibility with older versions of Kubernetes and OpenShift is offered by vendors such as
ControlPlane that provide enterprise support for Flux.

API changes

HelmRelease v2

The HelmRelease kind was promoted from v2beta2 to v2 (GA).

The v2 API is backwards compatible with v2beta2, with the exception of the deprecated fields which have been removed.

Removed fields:

• .spec.chart.spec.valuesFile replaced by .spec.chart.spec.valuesFiles.
• .spec.postRenderers.kustomize.patchesJson6902 replaced by .spec.postRenderers.kustomize.patches.
• .spec.postRenderers.kustomize.patchesStrategicMerge replaced by .spec.postRenderers.kustomize.patches.
• .status.lastAppliedRevision replaced by .status.history.chartVersion.

New fields:

• .spec.chartRef allows referencing chart artifacts from OCIRepository and HelmChart objects.
• .spec.chart.spec.ignoreMissingValuesFiles allows ignoring missing values files instead of failing to reconcile.

HelmChart v1

The HelmChart kind was promoted from v1beta2 to v1 (GA).

The v1 API is backwards compatible with v1beta2, with the exception of the deprecated fields which have been removed.

Removed fields:

• .spec.valuesFile replaced by .spec.chart.valuesFiles.

New fields:

• .spec.ignoreMissingValuesFiles allows ignoring missing values files instead of failing to reconcile.
• .spec.verify.provider: notation verify the signature of a Helm OCI artifacts using Notation trust policy and CA certificate.

HelmRepository v1

The HelmRepository kind was promoted from v1beta2 to v1 (GA).

The v1 API is backwards compatible with v1beta2.

OCIRepository v1beta2

The OCIRepository kind gains new optional fields with no breaking changes.

New fields:

• .spec.ref.semverFilter allows filtering the tags based on regular expressions before applying the semver range.
• .spec.verify.provider: notation verify the signature of OCI artifacts using Notation trust policy and CA certificate.

Kustomization v1

The Flux Kustomization kind gains new optional fields with no breaking changes.

New fields:

• .spec.namePrefix allows setting a name prefix for the generated resources.
• .spec.nameSuffix allows setting a name suffix for the generated resources.

ImageUpdateAutomation v1beta2

The ImageUpdateAutomation kind was promoted from v1beta1 to v1beta2.

The v1beta2 API is backwards compatible with v1beta1.

Deprecated fields:

• Updated template data has been deprecated in favour of Changed that is designed to accommodate for all the types of updates made.

New fields:

• .spec.policySelector allows filtering ImagePolicy based on labels.

Receiver v1

The Receiver kind gains new optional fields with no breaking changes.

New fields:

• .spec.type: cdevents allows receiving, validating and filtering of CDEvents.

Upgrade procedure

Upgrade Flux from v2.x to v2.3.0 either by rerunning bootstrap or by using the Flux GitHub Action.

For more details, please refer to the upgrade guide from the Announcing Flux 2.3 GA blog post.

Components changelog

• source-controller v1.3.0
• kustomize-controller v1.3.0
• notification-controller v1.3.0
• helm-controller v1.0.0 v1.0.1
• image-reflector-controller v0.32.0
• image-automation-controller v0.38.0

New Documentation

• HelmRelease v2 specification
• ImageUpdateAutomation v1beta2 specification
• Oracle VBS bootstrap guide
• Azure DevOps bootstrap guide for SSH RSA SHA-2
• OpenShift installation guide and SCC configuration
• Air-gapped installation guide for private container registries
• Bootstrap with Terraform examples
• Flux hub-and-spoke example repository
• Flux CD Architecture Overview blog post

CLI Changelog

• PR #4783 - @stefanprodan - ci: Consolidate conformance tests
• PR #4781 - @stefanprodan - Set Kubernetes 1.28 as min required version
• PR #4780 - @stefanprodan - Update helm-controller to v1.0.1
• PR #4779 - @fluxcdbot - Update toolkit components
• PR #4778 - @darkowlzz - tests/integration: Run flux check after installation
• PR #4777 - @stefanprodan - Add k3s to the conformance test suite
• PR #4775 - @stefanprodan - Update HelmRelease API to v2 (GA)
• PR #4773 - @makkes - Add (create|delete|export) source chart commands
• PR #4771 - @matheuscscp - Add 2.3.x release label
• PR #4770 - @stefanprodan - Update Flux architecture diagram
• PR #4769 - @frekw - Add --reproducible flag to flux push artifact
• PR #4768 - @stefanprodan - Improve end-to-end test workflow
• PR #4766 - @souleb - Add support for HelmRelease v2 in flux reconcile and flux create
• PR #4764 - @stefanprodan - ci: Adapt image automation test to v1beta2
• PR #4759 - @stefanprodan - Update Helm Source APIs to v1 (GA)
• PR #4754 - @stefanprodan - Add --ssh-hostkey-algos flag to bootstrap command
• PR #4747 - @stefanprodan - Update dependencies to Kubernetes 1.30
• PR #4746 - @swade1987 - Specifying go version in setup-go github action.
• PR #4736 - @dependabot[bot] - build(deps): bump the ci group with 4 updates
• PR #4735 - @JasonTheDeveloper - feat(secret): add create notation secret handler
• PR #4734 - @stefanprodan - Run conformance tests for Kubernetes 1.30.0
• PR #4729 - @stefanprodan - Add OpenShift to the conformance test suite
• PR #4728 - @toomaj - bootstrap: Add support for Git HTTP/S authorization header
• PR #4727 - @makkes - Add flags for issuer/subject OCI signature verification
• PR #4717 - @hawwwdi - Set GOMAXPROCS and GOMEMLIMIT to all Flux controllers
• PR #4710 - @stefanprodan - Add flux envsubst command
• PR #4709 - @stefanprodan - Add --strict-substitute flag to flux build ks and flux diff ks
• PR #4706 - @stefanprodan - Add --registry-creds flag to bootstrap and install commands
• PR #4705 - @stefanprodan - Update dependencies to Kustomize v5.4.0
• PR #4701 - @fluxcdbot - Update toolkit components
• PR #4699 - @stefanprodan - Update dependencies to Go 1.22 and Kubernetes 1.29.3
• PR #4689 - @makkes - Pin envtest version
• PR #4687 - @carlpett - Add permissions required for flow control
• PR #4678 - @darkowlzz - Update ImageUpdateAutomation API to v1beta2
• PR #4666 - @stefanprodan - Mark RFC-0006 as implementable
• PR #4657 - @stefanprodan - ci: Include all go modules in snyk testing
• PR #4654 - @stefanprodan - Remove deprecated e2e tests
• PR #4629 - @rishinair11 - Fix a typo in --force flag description
• PR #4620 - @stefanprodan - Update Equinix ARM64 GitHub runners
• PR #4610 - @takp - Fix typo in build.go
• PR #4589 - @stefanprodan - Update dependencies
• PR #4583 - @fluxcdbot - Update toolkit components
• PR #4575 - @stefanprodan - Update dependencies to Kubernetes v1.28.6
• PR #4558 - @twinguy - flux check should error o...

v2.2.3

Highlights

Flux v2.2.3 is a patch release which comes with various fixes and improvements. Users are encouraged to upgrade for the best experience.

💡 For upgrading to Flux v2.2, please see the procedure documented in 2.2.0.

This release updates the Kubernetes dependencies to v1.28.6 and various other dependencies to their latest version to patch upstream CVEs.

All controllers are built with Go 1.21.6 using Alpine Linux 3.19.1 base image.

Note

Due to breaking changes in Helm v3.14.0, the helm-controller version included in this patch release comes with Helm SDK v3.13.3.
A preview build of the helm-controller with the latest Helm SDK is available at helm-controller#879.

Fixes:

• Reconciling empty directories and directories without Kubernetes manifests no longer results in an error. This regressing bug was introduced with the kustomize-controller upgrade to Kustomize v5.3 and has been fixed in this patch release.
• The regression due to which Roles and ClusterRoles with aggregated roles were continuous reconciled by kustomize-controller has been fixed.
• Fix the Git revision displaying when notification-controller sends alerts to Grafana.
• The HelmRelease status reporting has been improved by ensuring that the stale failure conditions get updated after failure recovery.

See the components changelog for a full list of bug fixes.

Components changelog

• source-controller v1.2.4
• kustomize-controller v1.2.2
• notification-controller v1.2.4
• helm-controller v0.37.4
• image-reflector-controller v0.31.2
• image-automation-controller v0.37.1

CLI Changelog

• PR #4589 - @stefanprodan - Update dependencies
• PR #4585 - @dependabot[bot] - build(deps): bump the ci group with 3 updates
• PR #4583 - @fluxcdbot - Update toolkit components
• PR #4575 - @stefanprodan - Update dependencies to Kubernetes v1.28.6
• PR #4573 - @dependabot[bot] - build(deps): bump the ci group with 5 updates
• PR #4558 - @twinguy - flux check should error on unrecognised args
• PR #4557 - @twinguy - flux stats should error on unrecognised args
• PR #4554 - @dependabot[bot] - build(deps): bump the ci group with 3 updates
• PR #4553 - @twinguy - Properly detect unexpected arguments during uninstall
• PR #4535 - @dependabot[bot] - build(deps): bump github.com/cloudflare/circl from 1.3.6 to 1.3.7
• PR #4533 - @darkowlzz - tests/int: Add separate resource cleanup step

v2.2.2

Highlights

Flux v2.2.2 is a patch release that addresses an issue with the label selector sharding functionality in the helm-controller. Users are encouraged to upgrade for the best experience.

💡 For upgrading to Flux v2.2, please see the procedure documented in 2.2.0.

Components changelog

• helm-controller v0.37.2

CLI Changelog

• PR #4505 - @hiddeco - Update helm-controller to v0.37.2 in tests
• PR #4501 - @fluxcdbot - Update toolkit components
• PR #4499 - @stuebingerb - Fix typo in Git bootstrap
• PR #4495 - @dependabot[bot] - build(deps): bump golang.org/x/crypto from 0.16.0 to 0.17.0 in /tests/integration
• PR #4494 - @dependabot[bot] - build(deps): bump golang.org/x/crypto from 0.16.0 to 0.17.0
• PR #4493 - @dependabot[bot] - build(deps): bump golang.org/x/crypto from 0.16.0 to 0.17.0 in /tests/azure
• PR #4491 - @dependabot[bot] - build(deps): bump the ci group with 3 updates

v2.2.1

Highlights

Flux v2.2.1 is a patch release that comes with fixes to API backwards compatibility.
Users are encouraged to upgrade for the best experience.

💡 For upgrading to Flux v2.2, please see the procedure documented in 2.2.0.

This version was tested with the latest Kubernetes release, and extends Flux support to Kubernetes v1.29.

The Helm SDK was updated to the latest version, v3.13.3.

Logging in kustomize-controller and helm-controller has been improved to provide faster feedback on any HTTP errors encountered while fetching artifacts from source-controller.

Components changelog

• source-controller v1.2.3
• kustomize-controller v1.2.1
• notification-controller v1.2.3
• helm-controller v0.37.1

CLI Changelog

• PR #4488 - @hiddeco - tests: update API dependencies
• PR #4484 - @stefanprodan - Run conformance tests for Kubernetes v1.29.0
• PR #4483 - @fluxcdbot - Update toolkit components
• PR #4481 - @hoexter - Remove duplicate part of the reconcile hr --reset help message
• PR #4478 - @stefanprodan - Remove deprecated monitoring configs
• PR #4476 - @hiddeco - Properly detect unsupported API errors
• PR #4468 - @hiddeco - Add 2.2.x backport label

v2.2.0

Highlights

Flux v2.2.0 is a feature release. Users are encouraged to upgrade for the best experience.

The Flux CLI and controllers have been updated to Kustomize v5.3.0 and Kubernetes v1.28.4.

Flux helm-controller's reconciliation model underwent a significant overhaul, addressing persistent issues such as the automatic recovery of releases stuck in a pending state. In addition, it improves the observability of the release status, and it introduces the ability to enable drift detection on a per-object basis. For more details on the helm-controller improvements, please see the Announcing Flux 2.2 GA blog post.

The Flux CLI can now be used to force or reset the reconciliation state of a HelmRelease v2beta2 object using flux reconcile hr --force and flux reconcile hr --reset.

Flux CLI comes with support for bootstrapping Gitea repositories and adds guardrails to flux install and flux bootstrap to protect users from destructive operations. The flux version and flux check commands now print the Flux distribution version deployed on the cluster.

The Flux alerting capabilities have been extended with NATS and Bitbucket Server & Data Center support.

Starting with this release, Flux minor versions are benchmark to measure the Mean Time To Production (MTTP). The results for this version can be found at
github.com/fluxcd/flux-benchmark.

❤️ Big thanks to all the Flux contributors that helped us with this release!

Kubernetes compatibility

This release is compatible with the following Kubernetes versions:

Kubernetes version	Minimum required
v1.26	>= 1.26.0
v1.27	>= 1.27.1
v1.28	>= 1.28.0

Note that Flux may work on older versions of Kubernetes e.g. 1.25, but we don't recommend running end-of-life versions in production nor do we offer support for these versions.

API changes

HelmRelease v2beta2

The HelmRelease kind was promoted from v2beta1 to v2beta2.

The v2beta2 API is backwards compatible with v2beta1, the v2beta1 API is deprecated and will be removed in a future release.

Deprecated fields:

• The .patchesStrategicMerge and .patchesJson6902 Kustomize post-rendering fields have been deprecated in favor of .patches.
• The .status.lastAppliedRevision and .status.lastReleaseRevision fields have been deprecated in favor of .status.history.
• The .status.lastAttemptedValuesChecksum has been deprecated in favor of .status.lastAttemptedConfigDigest.

New fields:

• Drift detection and correction is now enabled on a per-release basis using the .spec.driftDetection.mode field.
• Ignoring specific fields during drift detection and correction is now supported using the .spec.driftDetection.ignore
• Helm tests can now be selectively run using the .spec.test.filters field.
• A history of metadata from Helm releases up to the previous successful release is now available in the .status.history field. This includes any Helm test results when enabled.
• The .status.lastHandledForceAt and .status.lastHandledResetAt fields have been introduced to track the last time a force upgrade or reset was handled.

Alert and Provider v1beta3

The Alert and Provider kinds were promoted from v1beta2 to v1beta3.

The v1beta3 API is backwards compatible with v1beta2, the .status field was removed making the resources static objects. Any errors encountered while sending notifications are now recorded as Kubernetes Events associated with the Alert objects.

Bucket v1beta2

A new field, .spec.prefix, has been added to the Bucket API, which enables server-side filtering of files if the object's .spec.provider is set to generic, aws or gcp.

OCIRepository and HelmChart v1beta2

Two new fields, .spec.verify.matchOIDCIdentity.issuer and .spec.verify.matchOIDCIdentity.subject have been added to the HelmChart and OCIRepository APIs. If the image has been keylessly signed via Cosign, these fields can be used to verify the OIDC issuer of the Fulcio certificate and the
OIDC identity's subject respectively.

HelmRepository and ImageRepository v1beta2

A new boolean field, .spec.insecure, has been introduced to the
HelmRepository and ImageRepository APIs, which allows connecting to a non-TLS HTTP container registry. For HelmRepositories it is only considered if the object's .spec.type is set to oci.

From this release onwards, HelmRepository objects of type OCI are treated as static objects, i.e. they have an empty status.

Upgrade procedure

Upgrade Flux from v2.x to v2.2.0 either by rerunning bootstrap or by using the Flux GitHub Action.

To upgrade the APIs, make sure the new CRDs and controllers are deployed, and then change the manifests in Git:

1. Set apiVersion: helm.toolkit.fluxcd.io/v2beta2 in the YAML files that contain HelmRelease definitions.
2. Set apiVersion: notification.toolkit.fluxcd.io/v1beta3 in the YAML files that contain Alert and Provider definitions.
3. Commit, push and reconcile the API version changes.

Bumping the APIs version in manifests can be done gradually. It is advised to not delay this procedure as the deprecated versions will be removed after 6 months.

New Documentation

• HelmRelease v2beta2 specification
• Enable in-memory kustomize builds guide

Components changelog

• source-controller v1.2.2
• kustomize-controller v1.2.0
• notification-controller v1.2.2
• helm-controller v0.37.0
• image-reflector-controller v0.31.1
• image-automation-controller v0.37.0

CLI Changelog

• PR #4467 - @stefanprodan - Drop support for Kubernetes EOL versions
• PR #4465 - @stefanprodan - build: Update alpine and kubectl in flux-cli image
• PR #4464 - @souleb - Update go-git-providers to v0.19.2
• PR #4463 - @stefanprodan - Update Git dependencies
• PR #4461 - @fluxcdbot - Update toolkit components
• PR #4455 - @chewong - Fix typos in flux bootstrap documentation
• PR #4454 - @fluxcdbot - Update toolkit components
• PR #4437 - @stefanprodan - Add force and reset flags to flux reconcile hr
• PR #4433 - @darkowlzz - Update Helm OCI RFC - static HelmRepository design
• PR #4424 - @somtochiama - Show distribution name in flux check and flux version
• PR #4422 - @somtochiama - bootstrap: More details for context deadline exceeded error
• PR #4416 - @stefanprodan - Update dependencies to Kubernetes v1.28
• PR #4409 - @somtochiama - Make events cmd work well with lowercased and only kind selector
• PR #4404 - @VinGarcia - Fix flux install command so it returns an error when unexpected arguments are passed
• PR #4402 - @mclarke47 - fix build_artifact.go typo
• PR #4388 - @stefanprodan - [RFC-0003] OIDC identity matching for keyless verification
• PR #4382 - @darkowlzz - tests/int: Set exit code 1 on tf destroy fail
• PR #4380 - @hiddeco - Tweak permissions on created files
• PR #4355 - @somtochiama - Confirm before overriding installation by another manager
• PR #4345 - @somtochiama - Prevent flux install from overriding bootrapped cluster
• PR #4332 - @matheuscscp - Add CLI flags for OCIRepository signature verification
• PR #4329 - @hiddeco - Address various issues throughout code base
• PR #4324 - @somtochiama - bootstrap: Fix error msg when the Git token doesn't match the repo owner
• PR #4323 - @stefanprodan - e2e: Update Go dependencies
• PR #4317 - @Jaykul - Correct "sync" to "component" in log lines
• PR #4313 - @fluxcdbot - Update toolkit components
• PR #4311 - @darkowlzz - Check readiness of Flux kinds using kstatus
• PR #4298 - @darkowlzz - Add support for HelmRepo OCI and NC v1beta3 static objects
• PR #4296 - @Skarlso - fix: only wait for changeset if the result is not empty
• PR #4285 - @matheuscscp - Add badge for SLSA Level 3
• PR #4284 - @errordeveloper - Make flux pull work for OCI artifacts produced by other tools
• PR #4270 - @Azhovan - feat: add bootstrap gitea command
• PR #4255 - @hiddeco - tests/azure: update controller dependencies
• PR #4251 - @fluxcdbot - Update toolkit components
• PR #4238 - @makkes - Upgrade github.com/fluxcd/pkg/{git,git/gogit}
• PR #4233 - @sonbui00 - chore: remove support armv6h for aur package
• PR #4228 - @sonbui00 - Improve AUR package templates
• PR #4226 - @somtochiama - Update descriptio...

v2.1.2

Highlights

Flux v2.1.2 is a patch release which comes with various fixes. Users are encouraged to upgrade for the best experience.

Fixes

• Ensures faster recovery of Kustomization and HelmRelease resources when the source-controller has restarted and is working on restoring the storage.
• Prevent source-controller from failing to reconcile OCIRepositories when artifacts contain symlinks.
• Addresses issue with helm-controller miss-labeling Custom Resource Definitions.
• Detect immutable field errors in Google Cloud resources managed by Flux Kustomizations.
• Better error reporting for flux bootstrap when the owner doesn't match the identity associated with the given token.
• Allow flux pull artifact to fetch OCI artifacts produced by other tools.

Components changelog

• source-controller v1.1.2
• kustomize-controller v1.1.1
• helm-controller v0.36.2

CLI Changelog

• PR #4324 - @somtochiama - bootstrap: Fix error msg when the Git token doesn't match the repo owner
• PR #4323 - @stefanprodan - e2e: Update Go dependencies
• PR #4313 - @fluxcdbot - Update toolkit components
• PR #4296 - @Skarlso - fix: only wait for changeset if the result is not empty
• PR #4285 - @matheuscscp - Add badge for SLSA Level 3
• PR #4284 - @errordeveloper - Make flux pull work for OCI artifacts produced by other tools