MachineSet
A MachineSet is an abstraction over Machines.
Its main responsibilities are:
- Adopting unowned Machines that aren’t assigned to a MachineSet
- Adopting unmanaged Machines that aren’t assigned a Cluster
- Booting a group of N machines
- Monitoring the status of those booted machines
In-place propagation
Changes to the following fields of MachineSet are propagated in-place to the Machine without needing a full rollout:
.spec.template.metadata.labels.spec.template.metadata.annotations.spec.template.spec.nodeDrainTimeout.spec.template.spec.nodeDeletionTimeout.spec.template.spec.nodeVolumeDetachTimeout
Changes to the following fields of MachineSet are propagated in-place to the InfrastructureMachine and BootstrapConfig:
.spec.machineTemplate.metadata.labels.spec.machineTemplate.metadata.annotations
Note: Changes to these fields will not be propagated to Machines that are marked for deletion (example: because of scale down).