Amazon FSx for Lustre CSI Driver

Overview

The Amazon FSx for Lustre Container Storage Interface (CSI) Driver implements CSI specification for container orchestrators (CO) to manage lifecycle of Amazon FSx for Lustre filesystems.

CSI Specification Compability Matrix

AWS FSx for Lustre CSI Driver \ CSI Version	v0.3.0	v1.1.0
master branch	no	yes
v0.4.0	no	yes
v0.3.0	no	yes
v0.2.0	no	yes
v0.1.0	yes	no

Features

The following CSI interfaces are implemented:

• Controller Service: CreateVolume, DeleteVolume, ControllerGetCapabilities, ValidateVolumeCapabilities
• Node Service: NodePublishVolume, NodeUnpublishVolume, NodeGetCapabilities, NodeGetInfo, NodeGetId
• Identity Service: GetPluginInfo, GetPluginCapabilities, Probe

FSx for Lustre CSI Driver on Kubernetes

Following sections are Kubernetes specific. If you are Kubernetes user, use followings for driver features, installation steps and examples.

Kubernetes Version Compability Matrix

AWS FSx for Lustre CSI Driver \ Kubernetes Version	v1.11	v1.12	v1.13	v1.14	v1.15+
master branch	no	no	no	yes	yes
v0.4.0	no	no	no	yes	yes
v0.3.0	no	no	no	yes	yes
v0.2.0	no	no	no	yes	yes
v0.1.0	yes	yes	yes	no	no

Container Images

FSx CSI Driver Version	Image
master branch	amazon/aws-fsx-csi-driver:latest
v0.4.0	amazon/aws-fsx-csi-driver:v0.4.0
v0.3.0	amazon/aws-fsx-csi-driver:v0.3.0
v0.2.0	amazon/aws-fsx-csi-driver:v0.2.0
v0.1.0	amazon/aws-fsx-csi-driver:v0.1.0

Features

• Static provisioning - FSx for Lustre file system needs to be created manually first, then it could be mounted inside container as a volume using the Driver.
• Dynamic provisioning - uses persistent volume claim (PVC) to let the Kuberenetes to create the FSx for Lustre filesystem for you and consumes the volume from inside container.
• Mount options - mount options can be specified in storageclass to define how the volume should be mounted.

Notes:

• For dynamically provisioned volumes, only one subnet is allowed inside storageclass's parameters.subnetId. This is a limitation that is enforced by FSx for Lustre.

Installation

Set up driver permission

The driver requires IAM permission to talk to Amazon FSx for Lustre service to create/delete the filesystem on user's behalf. There are several methods to grant driver IAM permission:

• Using secret object - create an IAM user with proper permission, put that user's credentials in secret manifest then deploy the secret.

curl https://raw.githubusercontent.com/kubernetes-sigs/aws-fsx-csi-driver/master/deploy/kubernetes/secret.yaml > secret.yaml
# Edit the secret with user credentials
kubectl apply -f secret.yaml

• Using worker node instance profile - grant all the worker nodes with proper permission by attach policy to the instance profile of the worker.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "iam:CreateServiceLinkedRole",
        "iam:AttachRolePolicy",
        "iam:PutRolePolicy"
       ],
      "Resource": "arn:aws:iam::*:role/aws-service-role/s3.data-source.lustre.fsx.amazonaws.com/*"
    },
    {
      "Action":"iam:CreateServiceLinkedRole",
      "Effect":"Allow",
      "Resource":"*",
      "Condition":{
        "StringLike":{
          "iam:AWSServiceName":[
            "fsx.amazonaws.com"
          ]
        }
      }
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket",
        "fsx:CreateFileSystem",
        "fsx:DeleteFileSystem",
        "fsx:DescribeFileSystems"
      ],
      "Resource": ["*"]
    }
  ]
}

Deploy driver

kubectl apply -k "github.com/kubernetes-sigs/aws-fsx-csi-driver/deploy/kubernetes/overlays/dev/?ref=master"

Alternatively, you could also install the driver using helm:

helm repo add aws-fsx-csi-driver https://kubernetes-sigs.github.io/aws-fsx-csi-driver/
helm install aws-fsx-csi-driver aws-fsx-csi-driver/aws-fsx-csi-driver

Examples

Before the example, you need to:

• Get yourself familiar with how to setup Kubernetes on AWS and create FSx for Lustre filesystem if you are using static provisioning.
• When creating FSx for Lustre file system, make sure its VPC is accessible from Kuberenetes cluster's VPC and network traffic is allowed by security group.
  • For FSx for Lustre VPC, you can either create FSx for lustre filesystem inside the same VPC as Kubernetes cluster or using VPC peering.
  • For security group, make sure port 988 is allowed for the security groups that are attached the lustre filesystem ENI.
• Install FSx for Lustre CSI driver following the Installation steps.

Example links

• Static provisioning
• Dynamic provisioning
• Dynamic provisioning with S3 integration
• Accessing the filesystem from multiple pods

Development

Please go through CSI Spec and General CSI driver development guideline to get some basic understanding of CSI driver before you start.

Requirements

• Golang 1.13.4+

Dependency

Dependencies are managed through go module. To build the project, first turn on go mod using export GO111MODULE=on, to build the project run: make

Testing

• To execute all unit tests, run: make test
• To execute sanity tests, run: make test-sanity
• To execute e2e tests, run: make test-e2e

License

This library is licensed under the Apache 2.0 License.