Support windows server nodes

[rhockenbury]

Is this a BUG REPORT or FEATURE REQUEST?:
/kind feature

Add support for running the CPI on windows server nodes. This would require publishing a windows image for the CPI, and modifying the Helm chart to add a daemonset to run the windows CPI on windows node.

This would bring the CPI inline with the in-tree VCP, which supported windows.

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• vsphere-cloud-controller-manager version:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[davidvonthenen]

@rhockenbury This issue captures the current status: #201

There shouldn't be any reason why the current v1.1 release of the CPI wouldn't work with Windows-based Kubernetes cluster. We should just need someone to validate if it works (or not - and if not, logs would be helpful). Windows images should not be required for the CPI. Is there a particular reason why Windows images are specifically being called out for the CPI?

The CSI side might be a different story because of the Windows volume mounts, but that issue would need to be filed in the CSI repo (https://github.com/kubernetes-sigs/vsphere-csi-driver/) to get the correct visibility. A different team works on the storage/CSI side of things.

[rhockenbury]

Thanks. Misunderstanding on my part 😊- I had quickly looked at the helm chart and saw a daemonset (assuming it needs to run on all nodes), but yes, now I see that it has a nodeselector for the masters. Windows images are not required then.

I plan to test this out on a cluster with windows nodes.

For the CSI, I had created an issue over there already - kubernetes-sigs/vsphere-csi-driver#123.

[davidvonthenen]

Thanks @rhockenbury! The validation would be invaluable since I don't have access to a Windows k8s cluster and don't current have resource to check it.