Red Hat Summit8.3. Manual creation of infrastructure nodes
Only when the Machine API is not supported in the environment should labels be directly applied to nodes. Manual creation requires that at least 3 RHOCP worker nodes are available to schedule OpenShift Data Foundation services, and that these nodes have sufficient CPU and memory resources. To avoid the RHOCP subscription cost, the following is required:
oc label node <node> node-role.kubernetes.io/infra=""
oc label node <node> cluster.ocs.openshift.io/openshift-storage=""
Adding a NoSchedule OpenShift Data Foundation taint is also required so that the infra node will only schedule OpenShift Data Foundation resources and repel any other non-OpenShift Data Foundation workloads.
oc adm taint node <node> node.ocs.openshift.io/storage="true":NoSchedule
Do not remove the node-role node-role.kubernetes.io/worker=""
The removal of the node-role.kubernetes.io/worker="" can cause issues unless changes are made both to the OpenShift scheduler and to MachineConfig resources.
If already removed, it should be added again to each infra node. Adding node-role node-role.kubernetes.io/infra="" and OpenShift Data Foundation taint is sufficient to conform to entitlement exemption requirements.
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