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Clarify cluster targeting and customization

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Mario Manno 2023-05-25 15:22:55 +02:00
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docs/gitrepo-targets.md
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@ -6,6 +6,7 @@
__Multi-cluster Only__:
This approach only applies if you are running Fleet in a multi-cluster style
If no targets are specified, i.e. when using a single-cluster, the bundles target the default cluster group.
:::
@ -84,6 +85,12 @@ and add clusters to it.
## Customization per Cluster
:::info
The `targets:` in the `GitRepo` resource select clusters to deploy on. The `targetCustomizations:` in `fleet.yaml` override Helm values only and do not change targeting.
:::
To demonstrate how to deploy Kubernetes manifests across different clusters with customization using Fleet, we will use [multi-cluster/helm/fleet.yaml](https://github.com/rancher/fleet-examples/blob/master/multi-cluster/helm/fleet.yaml).
**Situation:** User has three clusters with three different labels: `env=dev`, `env=test`, and `env=prod`. User wants to deploy a frontend application with a backend database across these clusters.
@ -136,6 +143,30 @@ Fleet will deploy the Helm chart with your customized `values.yaml` to the diffe
>**Note:** Configuration management is not limited to deployments but can be expanded to general configuration management. Fleet is able to apply configuration management through customization among any set of clusters automatically.
### Supported Customizations
* [DefaultNamespace](/ref-crds#bundledeploymentoptions)
* [ForceSyncGeneration](/ref-crds#bundledeploymentoptions)
* [KeepResources](/ref-crds#bundledeploymentoptions)
* [ServiceAccount](/ref-crds#bundledeploymentoptions)
* [TargetNamespace](/ref-crds#bundledeploymentoptions)
* [Helm.Atomic](/ref-crds#helmoptions)
* [Helm.Chart](/ref-crds#helmoptions)
* [Helm.DisablePreProcess](/ref-crds#helmoptions)
* [Helm.Force](/ref-crds#helmoptions)
* [Helm.ReleaseName](/ref-crds#helmoptions)
* [Helm.Repo](/ref-crds#helmoptions)
* [Helm.TakeOwnership](/ref-crds#helmoptions)
* [Helm.TimeoutSeconds](/ref-crds#helmoptions)
* [Helm.ValuesFrom](/ref-crds#helmoptions)
* [Helm.Values](/ref-crds#helmoptions)
* [Helm.Version](/ref-crds#helmoptions)
* [Helm.WaitForJobs](/ref-crds#helmoptions)
* [Kustomize.Dir](/ref-crds#kustomizeoptions)
* [YAML.Overlays](/ref-crds#yamloptions)
* [Diff.ComparePatches](/ref-crds#diffoptions)
## Additional Examples
Examples using raw Kubernetes YAML, Helm charts, Kustomize, and combinations