kiam VS aws-efs-csi-driver

IMDS for the underlying nodes, if EKS on EC2 is deployed and kiam or similar isn't deployed

Take a look at this GitHub project- https://github.com/uswitch/kiam

There are multiple solutions for this like Kube2IAM, KIAM, and IAM Roles for Service Accounts which, if we are in AWS and EKS (running in EC2 instances), this one is my go-to 😎.

How Kiam provides a pod with the AWS role credentials is by intercepting API calls to the metadata service (technical details here & here).

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.