While testing control plane machineset on vsphere. I have observed the following warning messages:

# oc apply -f control-plane-machine-set.yaml 
Warning: resource controlplanemachinesets/cluster is missing the kubectl.kubernetes.io/last-applied-configuration annotation which is required by oc apply. oc apply should only be used on resources created declaratively by either oc create --save-config or oc apply. The missing annotation will be patched automatically.

Warning: spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.template: template field is configured and may be ignored if configured in the failure domain.

Warning: spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.workspace.resourcePool: resourcePool field is configured and may be ignored if configured in the failure domain.

to:
Resource: "machine.openshift.io/v1, Resource=controlplanemachinesets", GroupVersionKind: "machine.openshift.io/v1, Kind=ControlPlaneMachineSet"
Name: "cluster", Namespace: "openshift-machine-api"
for: "control-plane-machine-set.yaml": error when patching "control-plane-machine-set.yaml": admission webhook "controlplanemachineset.machine.openshift.io" denied the request: [spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.network: Internal error: network devices should not be set when control plane nodes are in a failure domain: []v1beta1.NetworkDeviceSpec{v1beta1.NetworkDeviceSpec{NetworkName:"PNQ2-25G-PUBLIC-PG", Gateway:"", IPAddrs:[]string(nil), Nameservers:[]string(nil), AddressesFromPools:[]v1beta1.AddressesFromPool(nil)}}, spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.workspace: Internal error: workspace fields should not be set when control plane nodes are in a failure domain: &v1beta1.Workspace{Server:"example.com", Datacenter:"OpenShift-DC", Folder:"", Datastore:"/OpenShift-DC/datastore/OCP-PNQ-Datastore", ResourcePool:"/OpenShift-DC/host/OCP/Resources"}]    

Here is the CPMS config file that I have used.
As per the warning

- spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.template: template field is ignored
- spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.workspace.resourcePool: resourcePool field is ignored
- spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.network: Internal error: network devices should not be set when control plane nodes are in a failure domain
- spec.template.machines_v1beta1_machine_openshift_io.spec.providerSpec.value.workspace: Internal error: workspace fields should not be set when control plane nodes are in a failure domain

For network and workspae it is already mentioned in the docuemenation [2]
[2] https://docs.openshift.com/container-platform/4.15/machine_management/control_plane_machine_management/cpmso_provider_configurations/cpmso-config-options-vsphere.html

However, for template nothing of such is mentioned in documentation [1] seems like a mandatory field.

[1] https://docs.openshift.com/container-platform/4.15/machine_management/control_plane_machine_management/cpmso-getting-started.html#cpmso-activating_cpmso-getting-started

4.16.z    

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