Version: v1.4 (dev)

Import Existing Cluster built on Harvester VM

Rancher allows you to import existing Harvester VMs in which you installed Kubernetes.

Deployment

Prerequisites

The Kubernetes cluster is built on top of Harvester VMs.

Deploy Guest Clusters on Harvester VMs

Generate the csi-driver cloud-config file using the generate_addon_csi.sh script, which is available in the harvester/harvester-csi-driver repository.

Example:

./generate_addon_csi.sh <serviceaccount name> <namespace> RKE2

The generated output will be similar to the following one:

########## cloud-config ############
apiVersion: v1
clusters:
- cluster: <token>
    server: https://<YOUR HOST HARVESTER VIP>:6443
  name: default
contexts:
- context:
    cluster: default
    namespace: default
    user: rke2-guest-01-default-default
  name: rke2-guest-01-default-default
current-context: rke2-guest-01-default-default
kind: Config
preferences: {}
users:
- name: rke2-guest-01-default-default
  user:
    token: <token>

########## cloud-init user data ############
write_files:
  - encoding: b64
    content: 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
    owner: root:root
    path: /var/lib/rancher/rke2/etc/config-files/cloud-provider-config
    permissions: '0644'

Generate the cloud-provider cloud-config using the generate_addon.sh script, which is available in the harvester/cloud-provider-harvester repository.

Example:

./generate_addon.sh <serviceaccount name> <namespace>

The generated output will be similar to the following one: The output will look as follows:

########## cloud config ############
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: <CACERT>
    server: https://HARVESTER-ENDPOINT/k8s/clusters/local
  name: local
contexts:
- context:
    cluster: local
    namespace: default
    user: harvester-cloud-provider-default-local
  name: harvester-cloud-provider-default-local
current-context: harvester-cloud-provider-default-local
kind: Config
preferences: {}
users:
- name: harvester-cloud-provider-default-local
  user:
    token: <TOKEN>

########## cloud-init user data ############
write_files:
- encoding: b64
  content: <CONTENT>
  owner: root:root
  path: /etc/kubernetes/cloud-config
  permissions: '0644'

Create VM with two cloud-config files.

Install RKE2 in the VM.

sudo mkdir -p /etc/rancher/rke2
echo "cni: calico
disable-kube-proxy: false
etcd-expose-metrics: false" | sudo tee /etc/rancher/rke2/config.yaml
curl -sfL https://get.rke2.io | sudo sh -
sudo systemctl enable rke2-server.service
sudo systemctl start rke2-server.service

Verify that RKE2 is running in the VM.

sudo /var/lib/rancher/rke2/bin/kubectl --kubeconfig /etc/rancher/rke2/rke2.yaml get nodes

Import the VM into Rancher.

On the Rancher UI, go to Cluster Management > Clusters > Import Existing > Generic > Create.

Import Exisging Cluster

# Run the command in the VM
curl --insecure -sfL https://192.168.0.181:6443/v3/import/g5p2g2gtxw4564nktdl4nr5cwwvtwqp9zxd6dmhm5nc7vpnxmr9cfk_c-m-mzf28skd.yaml | sudo /var/lib/rancher/rke2/bin/kubectl --kubeconfig /etc/rancher/rke2/rke2.yaml apply -f -

Install the Harvester Cloud Provider.
On the RKE2 Cluster Dashboard, go to Apps > Charts > Harvester Cloud Provider > Install.
Install the Harvester CSI Driver.
On the RKE2 Cluster Dashboard, go to Apps > Charts > Harvester CSI Driver > Install.

Deployment​

Prerequisites​

Deploy Guest Clusters on Harvester VMs​

Deployment

Prerequisites

Deploy Guest Clusters on Harvester VMs