MachineInventorySelectorTemplate reference

The MachineInventorySelectorTemplate is a user defined resource that will be used as the blueprint to create the required MachineInventorySelectors.

It is the resource responsible of defining the matching criteria to pair an inventoried machine with a Cluster resource.

The relevant key is the selector which includes label selector expressions.

MachineInventorySelectorTemplate

apiVersion: elemental.cattle.io/v1beta1
kind: MachineInventorySelectorTemplate
metadata:
  name: my-machine-selector
  namespace: fleet-default
spec:
  template:
    spec:
      selector:
        ...

template.spec.selector can include matchLabels and or matchExpressions keys.

template.spec.selector.matchLabels

It is a map of {key,value} pairs (map[string]string). When multiple labels are provided all labels must match.

Example

...
spec:
  template:
    spec:
      selector:
        matchLabels:
          element: fire
          manufacturer: somevalue

A Cluster defined with the above selector will only attempt to provision nodes inventoried including these two labels.

template.spec.selector.matchExpressions

It is a list of label selectors, each label selectors can be defined as:

Example

...
spec:
  template:
    spec:
      selector:
        matchExpressions:
          - key: element
            operator: In
            values: [ 'fire' ]
          - key: manufacturer
            operator: Exists

A Cluster defined with the above selector will only attempt to provision nodes inventoried with the element=fire label and including a manufacturer label defined with any value.