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Helm Controller
The Helm Controller is a Kubernetes operator, allowing one to declaratively manage Helm chart releases with Kubernetes manifests.
The desired state of a Helm release is described through a Kubernetes Custom Resource named HelmRelease.
Based on the creation, mutation or removal of a HelmRelease resource in the cluster,
Helm actions are performed by the controller.
Features:
- Watches for
HelmReleaseobjects and generatesHelmChartobjects - Fetches artifacts produced by source-controller from
HelmChartobjects - Watches
HelmChartobjects for revision changes (semver ranges) - Performs Helm v3 actions including Helm tests as configured in the
HelmReleaseobjects - Runs Helm install/upgrade in a specific order, taking into account the depends-on relationship
- Prunes Helm releases removed from cluster (garbage collection)
- Reports Helm releases status (alerting provided by notification-controller)
Links:
- Source code fluxcd/helm-controller
- Specification docs