After installing Azure cluster and scaling up two rhel workers, then created custom ingresscontroller, the LB service stuck in pending status, and report error below:

Error syncing load balancer: failed to ensure load balancer: failed to map VM Name to NodeName: VM Name ci-op-mk6yqx4d-eed09-5rvxk-rhel-2

4.14.0-0.nightly-2023-11-11-054014

100%

1. use workflow cucushift-installer-rehearse-azure-ipi-proxy-workers-rhcos-rhel8 to create cluster, ensure the new rhel workers is joined

2. create custom ingresscontroller, e.g

BASE_DOMAIN=$(oc get dns.config cluster -ojsonpath={.spec.baseDomain})

kind: IngressController
apiVersion: operator.openshift.io/v1
metadata:
  name: extlb
  namespace: openshift-ingress-operator
spec:
  domain: extlb.$BASE_DOMAIN
  replicas: 1
  endpointPublishingStrategy:
    loadBalancer:
      scope: External
    type: LoadBalancerService

3. check the LB service status
 

1. rhel worker nodes are added

$ oc get node
NAME                                                     STATUS   ROLES                  AGE    VERSION
ci-op-mk6yqx4d-eed09-5rvxk-master-0                      Ready    control-plane,master   105m   v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-master-1                      Ready    control-plane,master   105m   v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-master-2                      Ready    control-plane,master   105m   v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-rhel-1                        Ready    worker                 44m    v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-rhel-2                        Ready    worker                 44m    v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-worker-northcentralus-ct6zl   Ready    worker                 90m    v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-worker-northcentralus-dzgtx   Ready    worker                 90m    v1.27.6+b49f9d1
ci-op-mk6yqx4d-eed09-5rvxk-worker-northcentralus-h67d6   Ready    worker                 87m    v1.27.6+b49f9d1

3. the LB service status
$ oc -n openshift-ingress get svc
NAME                      TYPE           CLUSTER-IP       EXTERNAL-IP    PORT(S)                      AGE
router-default            LoadBalancer   172.30.27.27     20.98.51.124   80:30330/TCP,443:30958/TCP   93m
router-extlb              LoadBalancer   172.30.129.142   <pending>      80:32027/TCP,443:32591/TCP   29s

$ oc describe svc router-extlb
<......>
  Warning  SyncLoadBalancerFailed  3m25s (x7 over 8m45s)  service-controller  Error syncing load balancer: failed to ensure load balancer: failed to map VM Name to NodeName: VM Name ci-op-mk6yqx4d-eed09-5rvxk-rhel-2

the LB should be provisioned after rhel worker added

no issue without scaling up rhel worker nodes.