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Add vSphere external cloud provider (#5959)

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Pierre Lebrun
2020-04-21 00:47:39 +09:00
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# vSphere CSI Driver
vSphere CSI driver allows you to provision volumes over a vSphere deployment. The Kubernetes historic in-tree cloud provider is deprecated and will be removed in future versions.
To enable vSphere CSI driver, uncomment the `vsphere_csi_enabled` option in `group_vars/all/vsphere.yml` and set it to `true`.
To set the number of replicas for the vSphere CSI controller, you can change `vsphere_csi_controller_replicas` option in `group_vars/all/vsphere.yml`.
You need to source the vSphere credentials you use to deploy your machines that will host Kubernetes.
| Variable | Required | Type | Choices | Default | Comment |
|---------------------------------------------|----------|---------|----------------------------|---------------------------|----------------------------------------------------------------|
| external_vsphere_vcenter_ip | TRUE | string | | | IP/URL of the vCenter |
| external_vsphere_vcenter_port | TRUE | string | | "443" | Port of the vCenter API |
| external_vsphere_insecure | TRUE | string | "true", "false" | "true" | set to "true" if the host above uses a self-signed cert |
| external_vsphere_user | TRUE | string | | | User name for vCenter with required privileges |
| external_vsphere_password | TRUE | string | | | Password for vCenter |
| external_vsphere_datacenter | TRUE | string | | | Datacenter name to use |
| external_vsphere_kubernetes_cluster_id | TRUE | string | | "kubernetes-cluster-id" | Kubernetes cluster ID to use |
| vsphere_cloud_controller_image_tag | TRUE | string | | "latest" | Kubernetes cluster ID to use |
| vsphere_syncer_image_tag | TRUE | string | | "v1.0.2" | Syncer image tag to use |
| vsphere_csi_attacher_image_tag | TRUE | string | | "v1.1.1" | CSI attacher image tag to use |
| vsphere_csi_controller | TRUE | string | | "v1.0.2" | CSI controller image tag to use |
| vsphere_csi_controller_replicas | TRUE | integer | | 1 | Number of pods Kubernetes should deploy for the CSI controller |
| vsphere_csi_liveness_probe_image_tag | TRUE | string | | "v1.1.0" | CSI liveness probe image tag to use |
| vsphere_csi_provisioner_image_tag | TRUE | string | | "v1.2.2" | CSI provisioner image tag to use |
| vsphere_csi_node_driver_registrar_image_tag | TRUE | string | | "v1.1.0" | CSI node driver registrat image tag to use |
| vsphere_csi_driver_image_tag | TRUE | string | | "v1.0.2" | CSI driver image tag to use |
## Usage example
To test the dynamic provisioning using vSphere CSI driver, make sure to create a [storage policy](https://github.com/kubernetes/cloud-provider-vsphere/blob/master/docs/book/tutorials/kubernetes-on-vsphere-with-kubeadm.md#create-a-storage-policy) and [storage class](https://github.com/kubernetes/cloud-provider-vsphere/blob/master/docs/book/tutorials/kubernetes-on-vsphere-with-kubeadm.md#create-a-storageclass), then apply the following manifest:
```yml
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: csi-pvc-vsphere
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
storageClassName: Space-Efficient
---
apiVersion: v1
kind: Pod
metadata:
name: nginx
spec:
containers:
- image: nginx
imagePullPolicy: IfNotPresent
name: nginx
ports:
- containerPort: 80
protocol: TCP
volumeMounts:
- mountPath: /var/lib/www/html
name: csi-data-vsphere
volumes:
- name: csi-data-vsphere
persistentVolumeClaim:
claimName: csi-pvc-vsphere
readOnly: false
```
Apply this conf to your cluster: ```kubectl apply -f nginx.yml```
You should see the PVC provisioned and bound:
```ShellSession
$ kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
csi-pvc-vsphere Bound pvc-dc7b1d21-ee41-45e1-98d9-e877cc1533ac 1Gi RWO Space-Efficient 10s
```
And the volume mounted to the Nginx Pod (wait until the Pod is Running):
```ShellSession
kubectl exec -it nginx -- df -h | grep /var/lib/www/html
/dev/sdb 976M 2.6M 907M 1% /var/lib/www/html
```
## More info
For further information about the vSphere CSI Driver, you can refer to the official [vSphere Cloud Provider documentation](https://cloud-provider-vsphere.sigs.k8s.io/container_storage_interface.html).