Installing a three-node cluster on GCP

You can install a three-node cluster using either installer-provisioned or user-provisioned infrastructure.

You configure a three-node cluster by setting the number of worker nodes to in the install-config.yaml file before deploying the cluster. Setting the number of worker nodes to 0 ensures that the control plane machines are schedulable. This allows application workloads to be scheduled to run from the control plane nodes.

• You have an existing install-config.yaml file.

Procedure

1. Set the number of compute replicas to 0 in your install-config.yaml file, as shown in the following compute stanza:

2. If you are deploying a cluster with user-provisioned infrastructure:

   • Do not create additional worker nodes.

Example cluster-scheduler-02-config.yml file for a three-node cluster

apiVersion: config.openshift.io/v1
kind: Scheduler
  creationTimestamp: null
spec:
  mastersSchedulable: true
  policy:
    name: ""

Next steps