FIlestore CSI driver doesn't work on Shared VPC

[mahmoudcb]

From documentation

Filestore instances on the shared VPC network cannot be created from service projects
If you attempt to create a Filestore instance from a service project that is attached to a shared VPC host project, the shared VPC network is not listed under Authorized network. Similarly, attempting to create the instance using gcloud or the REST API results in the following error:
ERROR: (gcloud.filestore.instances.create) INVALID_ARGUMENT: network '[SHARED_VPC_NETWORK]' does not exist.
Workaround
You can create Filestore instances from the host project with the shared VPC as the authorized network. Once created, clients in any service project can mount the instance as usual.
The caveats to this workaround include:
The host project must be involved in the creation of Filestore instances.
Costs for Filestore instances are charged to the host project instead of the service projects that use them.

E0604 18:10:37.941382       1 utils.go:55] GRPC error: rpc error: code = Internal desc = CreateInstance operation failed: googleapi: Error 400: network 'shared-vpc' does not exist., badRequest

So the question is, How can I run CSI controller on GKE on Project Y (which is the service project) with shared VPC on project X (the host project)?

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[msau42]

/assign @saikat-royc

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[msau42]

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[mattcary]

@mahmoudcb

If you use a host project service account for GCFS_SA_FILE when deploying the driver (deploy/kubernetes/cluster_setup.sh), then I think it should work. Note this means you have to change what happens in deploy/project_setup.sh as well.

Hopefully that is a good workaround for you while we figure out a better solution.

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[mattcary]

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We should add a knob for changing the project used to dynamically provision instances from the cluster project to an arbitrary project (maybe from the storageclass). The SA would still have to be set up correctly.