During installing Infrastructure cluster of DPU cluster. After nodes are ready, install dpu operator and label nodes to add into dpu mcp. Sometimes dpu mcp degraded, one of the bf worker nodes hung in status of 'Ready,SchedulingDisabled'. 

Install dpu operator via sub will increase the reproduce frequency, and reboot bf worker nodes may make the nodes recover.

4.14.0-ec.2

1. Install infrastructer cluster via tool https://github.com/bn222/cluster-deployment-automation and skip post config.
2. install dpu operator via sub
3. configure dpu related configuration
# cat manifests/infra/tenantcluster-dpu.yaml
apiVersion: v1
kind: Namespace
metadata:
  labels:
    pod-security.kubernetes.io/enforce: privileged
    pod-security.kubernetes.io/audit: privileged
    pod-security.kubernetes.io/warn: privileged
    security.openshift.io/scc.podSecurityLabelSync: "false"
    openshift.io/run-level: "0"
  name: tenantcluster-dpu
# cat manifests/infra/dpuclusterconfig.yaml
apiVersion: dpu.openshift.io/v1alpha1
kind: DpuClusterConfig
metadata:
  name: dpuclusterconfig-sample
  namespace: tenantcluster-dpu
spec:
  poolName: dpu
  nodeSelector:
    matchLabels:
      node-role.kubernetes.io/dpu-worker: "" 

#oc patch mcp dpu --type=json -p='[{"op": "replace", "path": "/spec/maxUnavailable", "value":2"}]' 

4. label nodes
  oc label node bf-worker0 node-role.kubernetes.io/dpu-worker=
  oc label node bf-worker1 node-role.kubernetes.io/dpu-worker=
  
  oc label node bf-worker0 network.operator.openshift.io/dpu=
  oc label node bf-worker1 network.operator.openshift.io/dpu=

5. dpu mcp will start update and may stay in updating and degraded status.
# oc get mcp
NAME     CONFIG                                             UPDATED   UPDATING   DEGRADED   MACHINECOUNT   READYMACHINECOUNT   UPDATEDMACHINECOUNT   DEGRADEDMACHINECOUNT   AGE
dpu                                                         False     True       True       2              0                   0                     1                      150m
master   rendered-master-56780fd8d330e435efbab9537b437345   True      False      False      3              3                   3                     0                      3h42m
worker   rendered-worker-94b8d439eb3c112161c2685ca897bc10   True      False      False      0              0                   0                     0                      3h42m

# oc get nodes
NAME                    STATUS                     ROLES                         AGE     VERSION
bf-worker0              Ready                      dpu-worker,worker             168m    v1.27.2+55f2dbe
bf-worker1              Ready,SchedulingDisabled   dpu-worker,worker             168m    v1.27.2+55f2dbe
infracluster-master-1   Ready                      control-plane,master,worker   3h22m   v1.27.2+55f2dbe
infracluster-master-2   Ready                      control-plane,master,worker   3h48m   v1.27.2+55f2dbe
infracluster-master-3   Ready                      control-plane,master,worker   3h49m   v1.27.2+55f2dbe 

mcp update fail 

mcp should update successfully