Flux Ecosystem Evolution Stefan Prodan - ControlPlane Flux & Flagger maintainer Sanskar Jaiswal - Kong Flagger maintainer 

Title Flux CD Projects Flux v2 - Continuous Delivery Flux is powered by the GitOps Toolkit, a set of composable APIs and specialized tools for managing the lifecycle of infrastructure and application workloads across environments. Flux main goal is to perform cluster state drift detection and correction based on desired state stored in version control systems and artifacts registries. Flagger - Progressive Delivery Flagger is a Progressive Delivery tool that automates the release process for applications running on Kubernetes. Flagger comes with a declarative model for decoupling the deployment of apps on Kubernetes from the release process. Flagger main goal is to reduce the risk of introducing a new software version in production by gradually shifting traffic to the new version while automating the application analysis, testing, promotion and rollback. https://github.com/fluxcd 

Title GitOps Progressive Delivery 

Title What’s new in Flagger Flagger v1.40 - v1.41 highlights ● Support for AWS Gateway API controller ● Metrics analysis with Splunk Observability ● Support for generating headless Kubernetes Services. ● Support for Grafana Mimir’s multi tenancy. 

Title Flagger + Knative 

Progressive Delivery Today 

Title The problem with Progressive Delivery 

Weighted Routing + Session Affinity How does it behave? ● Weight based traffic distribution between primary and canary workloads. ● Once served by the canary workload? Always served by the canary workload. 

Flagger Demo 

Flux Ecosystem 

Headlamp - Flux UI https://headlamp.dev/blog/2025/03/26/flux-ui-updates/ 

Title Flux Operator - GitOps on Autopilot Mode The Flux Operator is designed to automate the lifecycle management of Flux components and to streamline the GitOps workflows. The operator extends Flux with self-service capabilities and preview environments for GitLab and GitHub pull requests testing. Highlights ● Flux advanced configuration made easy ● Flexible cluster synchronisation (Git repos, OCI registries, S3 buckets) ● Deep insight into the delivery pipelines managed by Flux ● Automated updates of Flux components across a fleet of Kubernetes clusters ● High-level abstractions built on top of Flux APIs The Flux Operator is an open-source project developed by Flux mantainers part of the ControlPlane team. https://github.com/controlplaneio-fluxcd/flux-operator 

Title Flux Instance API The operator removes the operational burden of managing Flux across fleets of clusters by fully automating the installation, configuration, and upgrade of the Flux controllers based on a declarative API - FluxInstance CRD. Configuration options ● Multi-tenancy lockdown, sharding, horizontal and vertical scaling ● Air-gapped Gitless bootstrap (OCI-based desired state storage) ● Persistent storage for Flux internal artifacts ● Automate upgrades of Flux controllers and custom resources API versions ● OpenShift, EKS Auto Mode, GKE Autopilot, AKS Automatic compatible The Flux Instance API offers an alternative to the upstream Flux CLI & Terraform bootstrap. 

Title Flux Instance Configuration 

Title Flux ResourceSet APIs The Flux Operator ResourceSet APIs enable platform teams to define their own application standard as a group of Flux and Kubernetes resources that can be templated, parameterized and deployed as a single unit on self-service environments. Features ● Reduces the complexity of Kustomize overlays by providing a compact way of defining different configurations for a set of workloads per tenant and/or environment. ● Dynamic resource generation based on a matrix of inputs ● Multi-instance & multi-cluster provisioning for tenants and workloads ● Advanced dependency management based on CEL expressions ● Deploy app code and config changes made in a GitHub Pull Request or GitLab Merge Request to an ephemeral environment for testing and validation. 

Title Ephemeral environments for PRs 

Title What’s new in Flux Flux v2.5 highlights ● Support for GitHub App authentication ● Custom Health Checks using Common Expression Language (CEL) ● Resource filtering using CEL for webhook receivers ● Debug commands for Flux Kustomizations and HelmReleases ● Custom event metadata for Flux notifications ● Git commit status updates for Flux Kustomizations with OCIRepository sources https://fluxcd.io/roadmap/ 

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