103 lines
8.4 KiB
Markdown
103 lines
8.4 KiB
Markdown
# vSphere CSI Driver
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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.
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## Prerequisites
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The vSphere user for CSI driver requires a set of privileges to perform Cloud Native Storage operations. Follow the [official guide](https://vsphere-csi-driver.sigs.k8s.io/driver-deployment/prerequisites.html#roles_and_privileges) to configure those.
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## Kubespray configuration
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To enable vSphere CSI driver, uncomment the `vsphere_csi_enabled` option in `group_vars/all/vsphere.yml` and set it to `true`.
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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`.
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You need to source the vSphere credentials you use to deploy your machines that will host Kubernetes.
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| Variable | Required | Type | Choices | Default | Comment |
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|---------------------------------------------|----------|---------|----------------------------|---------------------------|---------------------------------------------------------------------------------------------------------------------|
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| external_vsphere_vcenter_ip | TRUE | string | | | IP/URL of the vCenter |
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| external_vsphere_vcenter_port | TRUE | string | | "443" | Port of the vCenter API |
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| external_vsphere_insecure | TRUE | string | "true", "false" | "true" | set to "true" if the host above uses a self-signed cert |
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| external_vsphere_user | TRUE | string | | | User name for vCenter with required privileges (Can also be specified with the `VSPHERE_USER` environment variable) |
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| external_vsphere_password | TRUE | string | | | Password for vCenter (Can also be specified with the `VSPHERE_PASSWORD` environment variable) |
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| external_vsphere_datacenter | TRUE | string | | | Datacenter name to use |
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| external_vsphere_kubernetes_cluster_id | TRUE | string | | "kubernetes-cluster-id" | Kubernetes cluster ID to use |
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| external_vsphere_version | TRUE | string | | "6.7u3" | Vmware Vsphere version where located all VMs |
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| external_vsphere_cloud_controller_image_tag | TRUE | string | | "latest" | Kubernetes cluster ID to use |
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| vsphere_syncer_image_tag | TRUE | string | | "v2.2.1" | Syncer image tag to use |
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| vsphere_csi_attacher_image_tag | TRUE | string | | "v3.1.0" | CSI attacher image tag to use |
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| vsphere_csi_controller | TRUE | string | | "v2.2.1" | CSI controller image tag to use |
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| vsphere_csi_controller_replicas | TRUE | integer | | 1 | Number of pods Kubernetes should deploy for the CSI controller |
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| vsphere_csi_liveness_probe_image_tag | TRUE | string | | "v2.2.0" | CSI liveness probe image tag to use |
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| vsphere_csi_provisioner_image_tag | TRUE | string | | "v2.1.0" | CSI provisioner image tag to use |
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| vsphere_csi_node_driver_registrar_image_tag | TRUE | string | | "v1.1.0" | CSI node driver registrar image tag to use |
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| vsphere_csi_driver_image_tag | TRUE | string | | "v1.0.2" | CSI driver image tag to use |
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| vsphere_csi_resizer_tag | TRUE | string | | "v1.1.0" | CSI resizer image tag to use
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| vsphere_csi_aggressive_node_drain | FALSE | boolean | | false | Enable aggressive node drain strategy |
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| vsphere_csi_aggressive_node_unreachable_timeout | FALSE | int | 300 | | Timeout till node will be drained when it in an unreachable state |
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| vsphere_csi_aggressive_node_not_ready_timeout | FALSE | int | 300 | | Timeout till node will be drained when it in not-ready state |
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| vsphere_csi_namespace | TRUE | string | | "kube-system" | vSphere CSI namespace to use; kube-system for backward compatibility, should be change to vmware-system-csi on the long run |
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## Usage example
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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:
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```yml
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---
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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name: csi-pvc-vsphere
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spec:
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accessModes:
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- ReadWriteOnce
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resources:
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requests:
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storage: 1Gi
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storageClassName: Space-Efficient
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: nginx
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spec:
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containers:
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- image: nginx
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imagePullPolicy: IfNotPresent
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name: nginx
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ports:
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- containerPort: 80
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protocol: TCP
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volumeMounts:
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- mountPath: /usr/share/nginx/html
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name: csi-data-vsphere
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volumes:
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- name: csi-data-vsphere
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persistentVolumeClaim:
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claimName: csi-pvc-vsphere
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readOnly: false
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```
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Apply this conf to your cluster: ```kubectl apply -f nginx.yml```
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You should see the PVC provisioned and bound:
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```ShellSession
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$ kubectl get pvc
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NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
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csi-pvc-vsphere Bound pvc-dc7b1d21-ee41-45e1-98d9-e877cc1533ac 1Gi RWO Space-Efficient 10s
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```
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And the volume mounted to the Nginx Pod (wait until the Pod is Running):
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```ShellSession
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kubectl exec -it nginx -- df -h | grep /usr/share/nginx/html
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/dev/sdb 976M 2.6M 907M 1% /usr/share/nginx/html
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```
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## More info
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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).
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