azuredisk-csi-driver VS aws-efs-csi-driver

Any Kubernetes cluster requires persistent storage - whether organizations choose to begin with an on-premise Kubernetes cluster and migrate to the public cloud, or provision a Kubernetes cluster using a managed service in the cloud. Kubernetes supports multiple types of persistent storage – from object storage (such as Azure Blob storage or Google Cloud Storage), block storage (such as Amazon EBS, Azure Disk, or Google Persistent Disk), or file sharing storage (such as Amazon EFS, Azure Files or Google Cloud Filestore). The fact that each cloud provider has its implementation of persistent storage adds to the complexity of storage management, not to mention a scenario where an organization is provisioning Kubernetes clusters over several cloud providers. To succeed in managing Kubernetes clusters over a long period, knowing which storage type to use for each scenario, requires storage expertise.

In the past I was have problems with GID allocator, something related to this problem.

However, the docs (https://github.com/kubernetes-sigs/aws-efs-csi-driver/blob/master/examples/kubernetes/dynamic_provisioning/README.md) are telling me to create EFS Mount Targets in the EKS subnets. Thats fine.

Fargate storage A Pod running on Fargate automatically mounts an Amazon EFS file system. You can't use dynamic persistent volume provisioning with Fargate nodes, but you can use static provisioning. For more information, see Amazon EFS CSI Driver on GitHub.

I guess something like this might go a long way to solve the problem https://github.com/kubernetes-sigs/aws-efs-csi-driver/pull/640 ? Though I see it isn't merged yet

I am currently trying to create an EFS for use within an EKS cluster. I've followed all the instructions, and everything seems to be working for the most part. However, when trying to apply the multiple_pods example deployment from here, the pods cannot succesfully mount the file system. The PV and PVC are both bound and look good, however the pods do not start and yield the following error message:

In each namespace, create a PV/PVC using the same fixed volume path. See "Volume Path in EKS CSI Driver" To make this work however, you MUST pre-create this volume path in your EFS (I usually just have an EC2 instance with it mounted to work on). From the docs above "Note: this feature requires the sub directory to mount precreated on EFS before consuming the volume from"

resource "aws_iam_policy" "eks_efs_csi_driver_policy" { # https://github.com/kubernetes-sigs/aws-efs-csi-driver/blob/master/docs/iam-policy-example.json policy = file("./6.AWSEFSpolicy.json") name = "aws-efs-csi-policy" }

efs - IAM Policy for AWS EFS CSI Driver.