gardener / Machine Controller Manager
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machine-controller-manager
⚠️ We are in the progress of migrating and deprecating all the in-tree providers to OOT. Please avoid making any new feature enhancements to the intree providers. Kindly make it on the OOT providers available here. More details on adding new OOT providers can be found here.
Machine Controller Manager (MCM) manages VMs as another kubernetes custom resource. It provides a declarative way to manage VMs.
MCM supports following providers:
- AWS
- GCP
- Azure
- Openstack
- Alicloud
- Metal-stack
- Packet
- KubeVirt
- VMWare
- Yandex
It can easily be extended to support other cloud providers as well.
Example of managing machine:
kubectl create/get/delete machine vm1
Key terminologies
Nodes/Machines/VMs are different terminologies used to represent similar things. We use these terms in the following way
- VM: A virtual machine running on any cloud provider. It could also refer to a physical machine (PM) in case of a bare metal setup.
- Node: Native kubernetes node objects. The objects you get to see when you do a "kubectl get nodes". Although nodes can be either physical/virtual machines, for the purposes of our discussions it refers to a VM.
- Machine: A VM that is provisioned/managed by the Machine Controller Manager.
Design of Machine Controller Manager
See the design documentation in the /docs/design
repository, please find the design doc here.
To start using or developing the Machine Controller Manager
See the documentation in the /docs
repository, please find the index here.
FAQ
An FAQ is available here
Cluster-api Implementation
-
cluster-api
branch of machine-controller-manager implements the machine-api aspect of the cluster-api project. - Link: https://github.com/gardener/machine-controller-manager/tree/cluster-api
- Once cluster-api project gets stable, we may make
master
branch of MCM as well cluster-api compliant, with well-defined migration notes.