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Red Hat OpenShift 4.7 additional configuration

Red Hat OpenShift 4.7 additional configuration

vSphere storage for Kubernetes

You can use the VMware vSphere® datastores as a location for storing persistent volumes for Kubernetes by using the VMware® Cloud Provider.

Complete the following steps to create a new volume.

  1. From the Bastion host, use GOVC to enable the vSphere connection:

    export GOVC_URL='10.208.17.2'
export GOVC_USERNAME='administrator@vsphere.local'
export GOVC_PASSWORD='xxx'
export GOVC_INSECURE=1
export GOVC_NETWORK='SDDC-DPortGroup-Mgmt'
export GOVC_DATASTORE='vsanDatastore'

  2. Create a folder on the specified datastore:

    govc datastore.mkdir ocp-volumes

  3. Create a persistent volume (.vmdk):

    govc datastore.disk.create -size 10G ocp-volumes/ocp-pv-001.vmdk

  4. Use the CLI to log in to your Kubernetes environment:

    export KUBECONFIG=/opt/ocpinstall/auth/kubeconfig
oc login

  5. Create a persistent volume in Kubernetes for the recently created .vmdk. Replace volumePath with your .vmdk. The following example uses vsphere-volume-pv.yaml.

    apiVersion: v1
kind: PersistentVolume
metadata:
  name: ocpvsan001
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  vsphereVolume:
    volumePath: "[ESX_OCP] volumes/ocp-pv-001.vmdk"
    fsType: ext4
  storageClassName: "vsphere-standard"

    export KUBECONFIG=/opt/ocpinstall/auth/kubeconfig
kubectl create -f  vsphere-volume-pv.yaml

  6. Create a Persistent Volume Claim in Kubernetes.

    Replace volumePath with your Persistent Volume name. The following example uses vsphere-volume-pvc.yaml.

    apiVersion: "v1"
kind: "PersistentVolumeClaim"
metadata:
  name: "pvcvsan001"
spec:
  accessModes:
    - "ReadWriteOnce"
  resources:
    requests:
      storage: "1Gi"
  storageClassName: "vsphere-standard"
  volumeName: "ocpvsan001"

    kubectl create -f vsphere-volume-pvc.yaml

    The persistent volume claim can now be mapped to the container application.