FleetAddonConfig Reference

The FleetAddonConfig Custom Resource Definition (CRD) is used to configure the behavior of the Cluster API Addon Provider for Fleet.

Spec

The spec field of the FleetAddonConfig CRD contains the configuration options. It is a required field and provides a config for fleet addon functionality.

config
- Description: An object that holds various configuration settings.
- Type: object
- Optional: Yes
- config.bootstrapLocalCluster
  - Description: Enable auto-installation of a fleet agent in the local cluster.
  - Type: boolean
  - Optional: Yes
  When set to true, the provider will automatically install a Fleet agent in the cluster where the provider is running. This is useful for bootstrapping a local development or management cluster to be managed by Fleet.
  
  Example:
```
spec:
  config:
    bootstrapLocalCluster: true
```
- config.featureGates
  - Description: Feature gates controlling experimental features.
  - Type: object
  - Optional: Yes
  This section allows enabling or disabling experimental features within the provider.
  - config.featureGates.configMap
    - Description: References a ConfigMap where to apply feature flags. If a ConfigMap is referenced, the controller will update it instead of upgrading the Fleet chart.
    - Type: object (ObjectReference)
    - Optional: Yes
    Example:
```
spec:
  config:
    featureGates:
      configMap:
        ref:
          apiVersion: v1
          kind: ConfigMap
          name: fleet-feature-flags
          namespace: fleet-system
```
  - config.featureGates.experimentalHelmOps
    - Description: Enables experimental Helm operations support.
    - Type: boolean
    - Optional: No (Required within featureGates)
    Example:
```
spec:
  config:
    featureGates:
      experimentalHelmOps: true
```
  - config.featureGates.experimentalOciStorage
    - Description: Enables experimental OCI storage support.
    - Type: boolean
    - Optional: No (Required within featureGates)
    Example:
```
spec:
  config:
    featureGates:
      experimentalOciStorage: true
```
- config.server
  - Description: Fleet server URL configuration options.
  - Type: object (oneOf inferLocal or custom)
  - Optional: Yes
  This section configures how the provider connects to the Fleet server. You must specify either inferLocal or custom.
  - config.server.inferLocal
    - Description: Infer the local cluster's API server URL as the Fleet server URL.
    - Type: boolean
    - Optional: No (Required if custom is not set)
    Example:
```
spec:
  config:
    server:
      inferLocal: true
```
  - config.server.custom
    - Description: Custom configuration for the Fleet server URL.
    - Type: object
    - Optional: No (Required if inferLocal is not set)
    - config.server.custom.apiServerCaConfigRef
      - Description: Reference to a ConfigMap containing the CA certificate for the API server.
      - Type: object (ObjectReference)
      - Optional: Yes
      Example:
```
spec:
  config:
    server:
      custom:
        apiServerCaConfigRef:
          apiVersion: v1
          kind: ConfigMap
          name: fleet-server-ca
          namespace: fleet-system
```
    - config.server.custom.apiServerUrl
      - Description: The custom URL for the Fleet API server.
      - Type: string
      - Optional: Yes
      Example:
```
spec:
  config:
    server:
      custom:
        apiServerUrl: https://fleet.example.com
```
cluster
- Description: Enable Cluster config functionality. This will create Fleet Cluster for each Cluster with the same name. In case the cluster specifies topology.class, the name of the ClusterClass will be added to the Fleet Cluster labels.
- Type: object
- Optional: Yes
This section configures the behavior for creating Fleet Clusters from Cluster API Clusters.
- cluster.agentEnvVars
  - Description: Extra environment variables to be added to the agent deployment.
  - Type: array of object (EnvVar)
  - Optional: Yes
  Example:
```
spec:
  cluster:
    agentEnvVars:
      - name: HTTP_PROXY
        value: http://proxy.example.com:8080
      - name: NO_PROXY
        value: localhost,127.0.0.1,.svc
```
- cluster.agentNamespace
  - Description: Namespace selection for the fleet agent.
  - Type: string
  - Optional: Yes
  Example:
```
spec:
  cluster:
    agentNamespace: fleet-agents
```
- cluster.agentTolerations
  - Description: Agent taint toleration settings for every cluster.
  - Type: array of object (Toleration)
  - Optional: Yes
  Example:
```
spec:
  cluster:
    agentTolerations:
      - key: "node.kubernetes.io/unreachable"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 600
      - key: "node.kubernetes.io/not-ready"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 600
```
- cluster.applyClassGroup
  - Description: Apply a ClusterGroup for a ClusterClass referenced from a different namespace.
  - Type: boolean
  - Optional: Yes
  When a CAPI Cluster references a ClusterClass in a different namespace, a corresponding ClusterGroup is created in the Cluster namespace. This ensures that all clusters within the namespace that share the same ClusterClass from another namespace are grouped together.
  
  This ClusterGroup inherits ClusterClass labels and applies two CAAPF-specific labels to uniquely identify the group within the cluster scope:
  - clusterclass-name.fleet.addons.cluster.x-k8s.io: <class-name>
  - clusterclass-namespace.fleet.addons.cluster.x-k8s.io: <class-ns>
  Additionally, this configuration enables the creation of a BundleNamespaceMapping. This mapping selects all available bundles and establishes a link between the namespace of the Cluster and the namespace of the referenced ClusterClass. This allows the Fleet Cluster to be evaluated as a target for application sources such as Bundles, HelmApps, or GitRepos from the ClusterClass namespace.
  
  When all CAPI Cluster resources referencing the same ClusterClass are removed, both the ClusterGroup and BundleNamespaceMapping are cleaned up.
  
  Note: If the cluster field is not set, this setting is enabled by default.
  
  Example:
```
spec:
  cluster:
    applyClassGroup: true
```
- cluster.hostNetwork
  - Description: Host network allows to deploy agent configuration using hostNetwork: true setting which eludes dependency on the CNI configuration for the cluster.
  - Type: boolean
  - Optional: Yes
  Example:
```
spec:
  cluster:
    hostNetwork: true
```
- cluster.namespaceSelector
  - Description: Namespace label selector. If set, only clusters in the namespace matching label selector will be imported. This configuration defines how to select namespaces based on specific labels. The namespaceSelector field ensures that the import strategy applies only to namespaces that have the label import: "true". This is useful for scoping automatic import to specific namespaces rather than applying it cluster-wide.
  - Type: object (LabelSelector)
  - Optional: No (Required within cluster)
  Example:
```
apiVersion: addons.cluster.x-k8s.io/v1alpha1
kind: FleetAddonConfig
metadata:
  name: fleet-addon-config
spec:
  cluster:
    namespaceSelector:
      matchLabels:
        import: "true"
```
- cluster.naming
  - Description: Naming settings for the fleet cluster.
  - Type: object
  - Optional: Yes
  This section allows customizing the name of the created Fleet Cluster resource.
  - cluster.naming.prefix
    - Description: Specify a prefix for the Cluster name, applied to created Fleet cluster.
    - Type: string
    - Optional: Yes
    Example:
```
spec:
  cluster:
    naming:
      prefix: capi-
```
  - cluster.naming.suffix
    - Description: Specify a suffix for the Cluster name, applied to created Fleet cluster.
    - Type: string
    - Optional: Yes
    Example:
```
spec:
  cluster:
    naming:
      suffix: -fleet
```
- cluster.patchResource
  - Description: Allow to patch resources, maintaining the desired state. If is not set, resources will only be re-created in case of removal.
  - Type: boolean
  - Optional: Yes
  Example:
```
spec:
  cluster:
    patchResource: true
```
- cluster.selector
  - Description: Cluster label selector. If set, only clusters matching label selector will be imported. This configuration filters clusters based on labels, ensuring that the FleetAddonConfig applies only to clusters with the label import: "true". This allows more granular per-cluster selection across the cluster scope.
  - Type: object (LabelSelector)
  - Optional: No (Required within cluster)
  Example:
```
apiVersion: addons.cluster.x-k8s.io/v1alpha1
kind: FleetAddonConfig
metadata:
  name: fleet-addon-config
spec:
  cluster:
    selector:
      matchLabels:
        import: "true"
```
- cluster.setOwnerReferences
  - Description: Setting to disable setting owner references on the created resources.
  - Type: boolean
  - Optional: Yes
  Example:
```
spec:
  cluster:
    setOwnerReferences: false
```
clusterClass
- Description: Enable clusterClass controller functionality. This will create Fleet ClusterGroups for each ClusterClaster with the same name.
- Type: object
- Optional: Yes
This section configures the behavior for creating Fleet ClusterGroups from Cluster API ClusterClasses.
- clusterClass.patchResource
  - Description: Allow to patch resources, maintaining the desired state. If is not set, resources will only be re-created in case of removal.
  - Type: boolean
  - Optional: Yes
  Example:
```
spec:
  clusterClass:
    patchResource: true
```
- clusterClass.setOwnerReferences
  - Description: Setting to disable setting owner references on the created resources.
  - Type: boolean
  - Optional: Yes
  Example:
```
spec:
  clusterClass:
    setOwnerReferences: false
```
install
- Description: Configuration for installing the Fleet chart.
- Type: object (oneOf followLatest or version)
- Optional: Yes
This section configures how the Fleet chart is installed. You must specify either followLatest or version.
- install.followLatest
  - Description: Follow the latest version of the chart on install.
  - Type: boolean
  - Optional: No (Required if version is not set)
  Example:
```
spec:
  install:
    followLatest: true
```
- install.version
  - Description: Use specific version to install.
  - Type: string
  - Optional: No (Required if followLatest is not set)
  Example:
```
spec:
  install:
    version: 0.12.0
```

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Cluster API Addon Provider Fleet

FleetAddonConfig Reference

Spec