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29 lines
1.6 KiB
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29 lines
1.6 KiB
Markdown
# Helm Controller
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The Helm Controller is a Kubernetes operator, allowing one to declaratively manage Helm chart
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releases with Kubernetes manifests.
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The desired state of a Helm release is described through a Kubernetes Custom Resource named `HelmRelease`.
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Based on the creation, mutation or removal of a `HelmRelease` resource in the cluster,
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Helm actions are performed by the controller.
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Features:
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- Watches for `HelmRelease` objects and generates `HelmChart` objects
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- Supports `HelmChart` artifacts produced from `HelmRepository` and `GitRepository` sources
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- Fetches artifacts produced by [source-controller](../source/controller.md) from `HelmChart` objects
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- Watches `HelmChart` objects for revision changes (including semver ranges for charts from `HelmRepository` sources)
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- Performs automated Helm actions, including Helm tests, rollbacks and uninstalls
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- Offers extensive configuration options for automated remediation (rollback, uninstall, retry) on failed Helm install, upgrade or test actions
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- Runs Helm install/upgrade in a specific order, taking into account the depends-on relationship defined in a set of `HelmRelease` objects
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- Prunes Helm releases removed from cluster (garbage collection)
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- Reports Helm releases statuses (alerting provided by [notification-controller](../notification/controller.md))
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- Built-in Kustomize compatible Helm post renderer, providing support for strategic merge, JSON 6902 and images patches
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Links:
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- Source code [fluxcd/helm-controller](https://github.com/fluxcd/helm-controller)
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- Specification [docs](https://github.com/fluxcd/helm-controller/tree/main/docs/spec)
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