Understand the difference between compute machine sets and the machine config pool
Compute machine sets and machine config pools control different aspects of node lifecycle in OpenShift Container Platform. Understanding how each object relates to scaling and upgrades helps you configure nodes correctly.
MachineSet objects describe OpenShift Container Platform nodes with respect to the cloud or machine provider.
The MachineConfigPool object allows MachineConfigController components to define and provide the status of machines in the context of upgrades.
The MachineConfigPool object allows users to configure how upgrades are rolled out to the OpenShift Container Platform nodes in the machine config pool.
The NodeSelector object can be replaced with a reference to the MachineSet object.