If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.
I like to think of a "machine" as OpenShift representation of a Virtual Machine, such as an Amazon Web Services (AWS) EC2 Instance, or a VMWare Virtual Machine, and then a Node, and then the pods running on the node.
The oc get machineset command can be used to display the cluster of edge, infra and worker machines. Almost always, the machines will be in the openshift-machine-api namespace.
~]$ oc get machineset --namespace openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE lab001-edge 2 2 2 2 140d lab001-infra 3 3 3 3 140d lab001-worker 2 2 2 2 143d
The -o yaml option can be used to output the YAML for each machine set.
oc get machineset/lab001-worker --namespace openshift-machine-api -o yaml
Which should return YAML that begins like this.
apiVersion: machine.openshift.io/v1beta1 kind: MachineSet metadata: creationTimestamp: "2021-07-16T17:10:51Z" generation: 4 labels: machine.openshift.io/cluster-api-cluster: lab001