OpenShift OKD – Cluster API Scaling Specific Nodes
Scaling down specific nodes in OpenShift / OKD can be achieved using the cluster-api-operator and a specific node annotation.
https://github.com/openshift/machine-api-operator/blob/release-4.6/pkg/controller/machineset/delete_policy.go#L34
This is a way to ensure predetermined nodes are removed and can be useful, particularly in the case of Baremetal nodes if you need to remove one specifically for whatever reason.
I’m using OKD deployed on OpenStack in this video.
We discuss deletionPolicy, what alternatives exist, and how to select predetermined nodes for deletion:
https://docs.okd.io/latest/machine_management/manually-scaling-machineset.html#machineset-delete-policy_manually-scaling-machineset
Default Policy is Random:
https://github.com/openshift/machine-api-operator/blob/release-4.6/pkg/controller/machineset/delete_policy.go#L80-L91
by TripleWho?
redhat openstack
