IPI BM Multi-arch feature does not work when the cluster is installed with PXE.
    

    How reproducible:{code:none}
always
    

    1. Install IPI x86_64 bm cluster with PXE
    2. Try adding aarch64 compute node
    3. The node is unable to boot up with the vmedia image provided to the node
    

    $ oc get clusterversion
NAME      VERSION                                    AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.21.0-0.nightly-multi-2025-10-13-014556   True        False         105m    Cluster version is 4.21.0-0.nightly-multi-2025-10-13-014556
 
sgoveas Mon Oct 13 02:26:26 2025 workspace
$ oc get nodes
ocNAME                                                     STATUS   ROLES                  AGE    VERSION
master-00.ci-op-9k2skri1.ocpqe.arm.eng.rdu2.redhat.com   Ready    control-plane,master   141m   v1.33.5
master-01.ci-op-9k2skri1.ocpqe.arm.eng.rdu2.redhat.com   Ready    control-plane,master   143m   v1.33.5
master-02.ci-op-9k2skri1.ocpqe.arm.eng.rdu2.redhat.com   Ready    control-plane,master   141m   v1.33.5
worker-00.ci-op-9k2skri1.ocpqe.arm.eng.rdu2.redhat.com   Ready    worker                 96m    v1.33.5
 
sgoveas Mon Oct 13 02:26:34 2025 workspace
$ oc get bmh -n openshift-machine-api
NAME        STATE         CONSUMER                              ONLINE   ERROR   AGE
master-00   provisioned   ci-op-9k2skri1-xhd7q-master-0         true             163m
master-01   provisioned   ci-op-9k2skri1-xhd7q-master-1         true             163m
master-02   provisioned   ci-op-9k2skri1-xhd7q-master-2         true             163m
worker-00   provisioned   ci-op-9k2skri1-xhd7q-worker-0-56mlr   true             163m
 
sgoveas Mon Oct 13 02:26:41 2025 workspace
$ cat ipi-worker-01.yaml 
apiVersion: v1
data:
  password: xxxx
  username: xxxx
kind: Secret
metadata:
  name: worker-01-aarch64-bmc-secret
  namespace: openshift-machine-api
type: Opaque
---
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  name: worker-01-aarch64
  namespace: openshift-machine-api
spec:
  online: True
  architecture: "aarch64"
  bootMACAddress: xx:xx:xx:xx:xx:xx
  bootMode: UEFI
  bmc:
    address: redfish-virtualmedia://192.168.xx.xx/redfish/v1/Systems/1
    credentialsName: worker-01-aarch64-bmc-secret
    disableCertificateVerification: True 
  rootDeviceHints:
    deviceName: "/dev/nvme0n1"
 
sgoveas Mon Oct 13 02:27:37 2025 workspace
$ oc create -f ipi-worker-01.yaml 
secret/worker-01-aarch64-bmc-secret created
baremetalhost.metal3.io/worker-01-aarch64 created
 
sgoveas Mon Oct 13 02:40:23 2025 workspace
$ oc get bmh -n openshift-machine-api
NAME                STATE         CONSUMER                              ONLINE   ERROR   AGE
master-00           provisioned   ci-op-9k2skri1-xhd7q-master-0         true             177m
master-01           provisioned   ci-op-9k2skri1-xhd7q-master-1         true             177m
master-02           provisioned   ci-op-9k2skri1-xhd7q-master-2         true             177m
worker-00           provisioned   ci-op-9k2skri1-xhd7q-worker-0-56mlr   true             177m
worker-01-aarch64   registering                                         true             11s
 
sgoveas Mon Oct 13 02:44:58 2025 workspace
$ oc get bmh worker-01-aarch64 -n openshift-machine-api
NAME                STATE        CONSUMER   ONLINE   ERROR   AGE
worker-01-aarch64   inspecting              true             4m49s
 
sgoveas Mon Oct 13 02:45:12 2025 workspace
$ oc get bmh worker-01-aarch64 -n openshift-machine-api -o yaml
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  creationTimestamp: "2025-10-13T13:40:23Z"
  finalizers:
  - baremetalhost.metal3.io
  generation: 1
  name: worker-01-aarch64
  namespace: openshift-machine-api
  resourceVersion: "65368"
  uid: 48485e3e-c15b-4d6b-97eb-5134d7dbd05d
spec:
  architecture: aarch64
  automatedCleaningMode: metadata
  bmc:
    address: redfish-virtualmedia://192.168.xx.xx/redfish/v1/Systems/1
    credentialsName: worker-01-aarch64-bmc-secret
    disableCertificateVerification: true
  bootMACAddress: xx:xx:xx:xx:xx:xx
  bootMode: UEFI
  online: true
  rootDeviceHints:
    deviceName: /dev/nvme0n1
status:
  errorCount: 0
  errorMessage: ""
  goodCredentials:
    credentials:
      name: worker-01-aarch64-bmc-secret
      namespace: openshift-machine-api
    credentialsVersion: "65248"
  hardwareProfile: unknown
  lastUpdated: "2025-10-13T13:40:54Z"
  operationHistory:
    deprovision:
      end: null
      start: null
    inspect:
      end: null
      start: "2025-10-13T13:40:54Z"
    provision:
      end: null
      start: null
    register:
      end: "2025-10-13T13:40:54Z"
      start: "2025-10-13T13:40:23Z"
  operationalStatus: OK
  poweredOn: false
  provisioning:
    ID: 9699ce6d-2d72-4736-99ba-8b28981c706c
    bootMode: UEFI
    image:
      url: ""
    rootDeviceHints:
      deviceName: /dev/nvme0n1
    state: inspecting
  triedCredentials:
    credentials:
      name: worker-01-aarch64-bmc-secret
      namespace: openshift-machine-api
    credentialsVersion: "65248"

    

aarch64 Node is provisioned