---
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  labels:
    airshipit.org/node-role: "control-plane"
  name: master-0
spec:
  online: true
  bootMACAddress: 00:3b:8b:0c:ec:8b
  bmc:
    address: ""
    credentialsName: master-0-bmc-secret
---
apiVersion: v1
kind: Secret
metadata:
  labels:
    airshipit.org/node-role: "control-plane"
  name: master-0-bmc-secret
type: Opaque
data:
  username: YWRtaW4=
  password: cGFzc3dvcmQ=
...