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Example Trident Operations

Contributors kevin-hoke mboglesby
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This section includes examples of various operations that you may want to perform with Trident.

Import an Existing Volume

If there are existing volumes on your NetApp storage system/platform that you want to mount on containers within your Kubernetes cluster, but that are not tied to PVCs in the cluster, then you must import these volumes. You can use the Trident volume import functionality to import these volumes.

The example commands that follow show the importing of a volume named pb_fg_all. For more information about PVCs, see the official Kubernetes documentation. For more information about the volume import functionality, see the Trident documentation.

An accessModes value of ReadOnlyMany is specified in the example PVC spec files. For more information about the accessMode field, see the official Kubernetes documentation.

$ cat << EOF > ./pvc-import-pb_fg_all-iface1.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pb-fg-all-iface1
  namespace: default
spec:
  accessModes:
    - ReadOnlyMany
  storageClassName: ontap-ai-flexgroups-retain-iface1
EOF
$ tridentctl import volume ontap-ai-flexgroups-iface1 pb_fg_all -f ./pvc-import-pb_fg_all-iface1.yaml -n trident
+--------------------------------+--------+-----------------------------------+----------+--------------------------------------------+--------+---------+
|          NAME                  |  SIZE  |       STORAGE CLASS               | PROTOCOL |             BACKEND UUID                         | STATE  | MANAGED |
+--------------------------------+--------+-----------------------------------+----------+------------------------------------------+--------+---------+
| default-pb-fg-all-iface1-7d9f1 | 10 TiB | ontap-ai-flexgroups-retain-iface1 | file     | b74cbddb-e0b8-40b7-b263-b6da6dec0bdd | online | true    |
+--------------------------------+--------+-----------------------------------+----------+--------------------------------------------+--------+---------+
$ tridentctl get volume -n trident
+----------------------------------+---------+-----------------------------------+----------+--------------------------------------+--------+---------+
|               NAME               |  SIZE   |           STORAGE CLASS           | PROTOCOL |             BACKEND UUID             | STATE  | MANAGED |
+----------------------------------+---------+-----------------------------------+----------+--------------------------------------+--------+---------+
| default-pb-fg-all-iface1-7d9f1   | 10 TiB  | ontap-ai-flexgroups-retain-iface1 | file     | b74cbddb-e0b8-40b7-b263-b6da6dec0bdd | online | true    |
+----------------------------------+---------+-----------------------------------+----------+--------------------------------------+--------+---------+
$ kubectl get pvc
NAME                 STATUS   VOLUME                             CAPACITY         ACCESS MODES   STORAGECLASS                        AGE
pb-fg-all-iface1     Bound    default-pb-fg-all-iface1-7d9f1     10995116277760   ROX            ontap-ai-flexgroups-retain-iface1   25h

Provision a New Volume

You can use Trident to provision a new volume on your NetApp storage system or platform.

Provision a New Volume Using kubectl

The following example commands show the provisioning of a new FlexVol volume using kubectl.

An accessModes value of ReadWriteMany is specified in the following example PVC definition file. For more information about the accessMode field, see the official Kubernetes documentation.

$ cat << EOF > ./pvc-tensorflow-results.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: tensorflow-results
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: ontap-ai-flexvols-retain
EOF
$ kubectl create -f ./pvc-tensorflow-results.yaml
persistentvolumeclaim/tensorflow-results created
$ kubectl get pvc
NAME                              STATUS    VOLUME                             CAPACITY         ACCESS MODES   STORAGECLASS                        AGE
pb-fg-all-iface1                  Bound     default-pb-fg-all-iface1-7d9f1     10995116277760   ROX            ontap-ai-flexgroups-retain-iface1   26h
tensorflow-results                Bound     default-tensorflow-results-2fd60   1073741824       RWX            ontap-ai-flexvols-retain            25h

Provision a New Volume Using the NetApp DataOps Toolkit

You can also use the NetApp DataOps Toolkit for Kubernetes to provision a new volume on your NetApp storage system or platform. The NetApp DataOps Toolkit for Kubernetes utilizes Trident to provision volumes but simplifies the process for the user. Refer to the documentation for details.