When adding a day-2 node using AI, it has no BareMetalHost associated with it and it is not in the machine pool. When we try to create them - we end up deleting the node.

To recreate:

1) Install a day-1 cluster with assisted installer (I used the SaaS)

2) Add a day-2 node using AI as well

3) To create the BMH for the node, first create a secret with the BMC credentials:
kubectl create secret generic worker-0-3-secret --from-literal=username=admin --from-literal=password=password -n openshift-machine-api
4) Create the BMH as an "externally provisioned" host and disable introspection (since it was already up and running thanks to AI day-2):
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
annotations:
inspect.metal3.io: disabled
name: openshift-worker-0-3
namespace: openshift-machine-api
spec:
bmc:
address: redfish-virtualmedia://192.168.123.1:8000/redfish/v1/Systems/9b72c048-2e2a-43ef-a77a-aef8f12ad44d
credentialsName: worker-0-3-secret
disableCertificateVerification: true
bootMACAddress: 52:54:00:3e:64:24
online: true
externallyProvisioned: true
5) Patch the node to point to the BMH:
oc patch node worker-0-3 --type merge --patch '{"spec":{"providerID":"baremetalhost:///openshift-machine-api/openshift-worker-0-3"}}'
6) Create the machine (this is where things go wrong):
apiVersion: machine.openshift.io/v1beta1
kind: Machine
metadata:
annotations:
metal3.io/BareMetalHost: openshift-machine-api/openshift-worker-0-3
finalizers:

• machine.machine.openshift.io
  labels:
  machine.openshift.io/cluster-api-cluster: titan91cluster-0-zfrdz
  machine.openshift.io/cluster-api-machine-role: worker
  machine.openshift.io/cluster-api-machine-type: worker
  machine.openshift.io/cluster-api-machineset: titan91cluster-0-zfrdz-worker-0
  name: titan91cluster-0-zfrdz-worker-0-3
  namespace: openshift-machine-api
  spec:
  metadata: {}
  providerID: baremetalhost:///openshift-machine-api/openshift-worker-0-3
  providerSpec:
  value:
  apiVersion: baremetal.cluster.k8s.io/v1alpha1
  hostSelector: {}
  kind: BareMetalMachineProviderSpec
  => The day-2 node and the BMH disappear! A new machine object is created but it is stuck in "provisioning" state and is not connected with any real host.