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Astra Trident

Versions Supported​

After deploying Trident, you will need to create a backend and a storage class before you can start provisioning volumes and mounting those to any pods.

Create a Storage Backend​

Trident supports multiple storage backends. Select a supported backend that fits your needs. You can find example of different backends by reviewing the driver manifests examples in the official Trident repository. If you decide to use one of the example configurations, make sure you update the configuration with your credentials and environment configurations.

The example below creates a backend with the ONTAP-NAS driver.

apiVersion: v1
kind: Secret
metadata:
  name: backend-ontap-nas-secret
  namespace: trident
type: Opaque
stringData:
  username: [USERNAME]
  password: [PASSWORD]
---
apiVersion: trident.netapp.io/v1
kind: TridentBackendConfig
metadata:
  name: backend-ontap-nas
  namespace: trident
spec:
  version: 1
  storageDriverName: ontap-nas
  managementLIF: [ONTAP_MANAGEMENT_LIF_IP]
  dataLIF: [DATA_LIF_IP]
  backendName: ontap-nas
  autoExportCIDRs:
    - [x.x.x.x/xx]
  autoExportPolicy: true
  svm: [SVM]
  credentials:
    name: backend-ontap-nas-secret

Create a Storage Class​

Kubernetes supports the ability to bind statically or dynamically provisioned volumes to pods. Statically provisioned volumes are manually created by a user and then referenced in a deployment. Astra Trident allows you to leverage your NetApp storage. You must create a storage class before you can request dynamically provisioned volumes.

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: trident-csi
  namespace: trident
provisioner: csi.trident.netapp.io
parameters:
  backendType: "ontap-nas"
  csi.storage.k8s.io/fstype: ext4

Provision Volumes​

An example of provisioning a Persistent Volume Claim (PVC).

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: trident-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  storageClassName: trident-csi

Deploy a Pod and Mount the Volume.​

The following code snippet is an example of a pod deployment. The pod contains an Nginx container, with a claim to the previously created PVC. Once deployed, the PVC with its bound Persistent Volume (PV), will mount to the pod and provide persistent storage to this application.

kind: Pod
apiVersion: v1
metadata:
  name: example-pv-pod
  namespace: trident
spec:
  volumes:
    - name: example-pv-vol
      persistentVolumeClaim:
        claimName: trident-pvc
  containers:
    - name: example-pv-pod
      image: nginx
      ports:
        - containerPort: 80
          name: "http-server"
      volumeMounts:
        - mountPath: "/usr/share/nginx/html"
          name: example-pv-vol

Terraform​

You can retrieve details about the Astra Trident pack by using the following Terraform code.

data "spectrocloud_registry" "public_registry" {
  name = "Public Repo"
}

data "spectrocloud_pack_simple" "astra-trident" {
  name    = "csi-trident"
  version = "23.01.0"
  type = "helm"
  registry_uid = data.spectrocloud_registry.public_registry.id
}