MachineInventorySelectorTemplate reference

The MachineInventorySelectorTemplate 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.