Configure Openshift vSphere Cloud Provider

Openshift, Ansible

In this post I will show you how can you use vmware for persistent storagi on Openshift.

Parst of the Openshift series

vSphere Configuration

  • Create a folder for all the VMs in vCenter
    • In the navigator, select the data center
    • Right-click and select the menu option to create the folder.
    • Select All vCenter Actions > New VM and Template Folder.
    • Move Openshift vms to this folder
  • The name of the virtual machine must match the name of the nodes for the OpenShift cluster.

Set up the GOVC environment:

# on deployer
curl -LO https://github.com/vmware/govmomi/releases/download/v0.20.0/govc_linux_amd64.gz
gunzip govc_linux_amd64.gz
chmod +x govc_linux_amd64
cp govc_linux_amd64 /usr/bin/govc
echo "export GOVC_URL='vCenter IP OR FQDN'" >> /etc/profile
echo "export GOVC_USERNAME='vCenter User'" >> /etc/profile
echo "export GOVC_PASSWORD='vCenter Password'" >> /etc/profile
echo "export GOVC_INSECURE=1" >> /etc/profile
source /etc/profile

govc vm.info <vm>
govc ls /Datacenter/vm/<vm-folder-name>
govc vm.change -e="disk.enableUUID=1" -vm='VM Path'

Configure ansible installer

nano /etc/hosts
openshift_master_dynamic_provisioning_enabled=true
openshift_cloudprovider_kind=vsphere
openshift_cloudprovider_vsphere_username=<vCenter User>
openshift_cloudprovider_vsphere_password=<vCenter Password>
openshift_cloudprovider_vsphere_host=<vCenter IP OR FQDN>
openshift_cloudprovider_vsphere_datacenter=<Datacenter>
openshift_cloudprovider_vsphere_datastore=<Datastore>
openshift_cloudprovider_vsphere_folder=<vm-folder-name>

Add providerID

nano openshift-vmware-pacher.sh
DATACENTER='<Datacenter>'
FOLDER='<vm-folder-name>'
for vm in $(govc ls /$DATACENTER/vm/$FOLDER ); do
  MACHINE_INFO=$(govc vm.info -json -dc=$DATACENTER -vm.ipath="$vm" -e=true)
  # My VMs are created on vmware with upper case names, so I need to edit the names with awk
  VM_NAME=$(jq -r ' .VirtualMachines[] | .Name' <<< $MACHINE_INFO | awk '{print tolower($0)}')
  # UUIDs come in lowercase, upper case then
  VM_UUID=$( jq -r ' .VirtualMachines[] | .Config.Uuid' <<< $MACHINE_INFO | awk '{print toupper($0)}')
  echo "Patching $VM_NAME with UUID:$VM_UUID"
  # This is done using dry-run to avoid possible mistakes, remove when you are confident you got everything right.
  kubectl patch node $VM_NAME -p "{\"spec\":{\"providerID\":\"vsphere://$VM_UUID\"}}"
done

chmod +x openshift-vmware-pacher.sh
./openshift-vmware-pacher.sh

Run the Installer

# deployer
cd /usr/share/ansible/openshift-ansible/
sudo ansible-playbook -i inventory/hosts.localhost playbooks/prerequisites.yml
sudo ansible-playbook -i inventory/hosts.localhost playbooks/deploy_cluster.yml

# If installastion failed or went wrong, the following uninstallation script can be run, and running installation can be tried again:
sudo ansible-playbook -i inventory/hosts.localhost playbooks/adhoc/uninstall.yml

Create vSphere storage-class

nano vmware-sc.yml
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
  name: "vsphere-standard"
provisioner: kubernetes.io/vsphere-volume
parameters:
    diskformat: zeroedthick
    datastore: "NFS"
reclaimPolicy: Delete

oc aplay -f vmware-sc.yml