machine-controller-manager-provider-virtual

README

machine-controller-manager-provider-virtual

A virtual provider for the Gardener Machine Controller Manager thar provides a Driver implementation that creates virtual k8s Nodes in a virtual shoot cluster. It can mimic AWS/GCP/Azure Nodes depending on the MachineClass. At the moment only AWS is supported. Helper scripts are also provided to setup and then launch a virtual cluster, MCM (machine-controller-manager), CA (cluster-autoscaler) as well as MC (this virtual machine-controller)

Usage

Setup

1. CHeckout this project at $GOPATH/src/github.com/elankath/machine-controller-manager-provider-virtual
2. Execute ./hack/setup.sh

• This will setup download/build the binaries for the virtual cluster, MCM, MC, CA, hack, etc
• You need to export LANDSCAPE, PROJECT and SHOOT env variables before running so that the MachineClasses and MachineDeployments can be copied from an existing gardener cluster.
• It downloads relevant files into gen sub-dir of project. A env file with env variables are also generated at gen/env.

Launch

TODO: make a combined launch for convenience.

Open a shell with 4 windows.

1. First Launch KVCL (mandatory) Execute ./hack/kvcl-launch.sh
2. Launch MCM. ./hack/mcm-launch.sh
3. Launch MC. ./hack/mc-launch.sh
4. Launch CA. ./hack/ca-launch.sh

TODO: describe working in detail

CLI Use

1. export KUBECONFIG=/tmp/kvcl.yaml
2. Listing control plane objects
   1. kubectl config set-context --current --namespace=<SHOOT_NAMESPACE>
   2. kubectl get mcc,mcd,mc

NAME                                                             AGE
machineclass.machine.sapcloud.io/shoot--i034796--aw-a-z1-ccb6a   11m
machineclass.machine.sapcloud.io/shoot--i034796--aw-b-z1-44b8a   11m
machineclass.machine.sapcloud.io/shoot--i034796--aw-c-z1-c7d6c   11m

NAME                                                            READY   DESIRED   UP-TO-DATE   AVAILABLE   AGE
machinedeployment.machine.sapcloud.io/shoot--i034796--aw-a-z1   1       1         1            1           11m
machinedeployment.machine.sapcloud.io/shoot--i034796--aw-b-z1                                              11m
machinedeployment.machine.sapcloud.io/shoot--i034796--aw-c-z1                                              11m

NAME                                                              STATUS    AGE   NODE
machine.machine.sapcloud.io/shoot--i034796--aw-a-z1-c9478-99wwq   Running   11m   shoot--i034796--aw-a-z1-c9478-99wwq

1. Listing data plane objects
   1. kubectl get no

Design

TODO