Guest clustering for OpenShift.

• Admin access to an OpenShift cluster (version 4.7).

• The OpenShift oc CLI tool.

• The hypershift CLI tool:

    $ make hypershift
  

Install HyperShift into the management cluster:

$ bin/hypershift install

Remove HyperShift from the management cluster:

$ bin/hypershift install --render | oc delete -f -

Prerequisites:

• A valid pull secret file for image pulls.
• An SSH public key file for guest node access.
• An aws credentials file.

Install the example cluster:

$ bin/hypershift create cluster \
    --pull-secret /my/pull-secret \
    --aws-creds /my/aws-credentials \
    --ssh-key /my/ssh-public-key

When the cluster is available, get the guest kubeconfig using:

$ oc get secret --namespace example admin-kubeconfig --template={{.data.value}} | base64 -D

To create additional node pools, create a resource like:

apiVersion: hypershift.openshift.io/v1alpha1
kind: NodePool
metadata:
  namespace: clusters
  name: example-extended
spec:
  clusterName: example
  nodeCount: 1
  platform:
    aws:
      instanceType: m5.large

with autoscaling:

apiVersion: hypershift.openshift.io/v1alpha1
kind: NodePool
metadata:
  namespace: clusters
  name: example-extended
spec:
  clusterName: example
  autoScaling:
    max: 5
    min: 1
  platform:
    aws:
      instanceType: m5.large

And delete the cluster using:

$ oc delete --namespace clusters