Cluster creation¶

So you needed a RedHat OpenShift cluster. How you create that depends a lot on the decision point that you make. Some of these architectural decisions are listed in here.

The following is a generic simplification of the cluster creation and setup.

images/platform-selection.png

You have to decide the following:

Where will you stand the cluster? On premises, cloud providers, and other decision points there.
How would you build the cluster? You can do a managed or unmanaged cluster. For most of the practical reason, we recommend that you use either a Managed cluster or an IPI cluster. UPI cluster has a lot more risk in installation and maintenance, so unless you have a very valid reason ... do not venture there.
Decide on whether you can and wanted to do a machineset for infrastructure and storage nodes. The gitops resources that we have currently only supports aws, azure and vsphere platforms. Further more managed OpenShift has the infrastructure nodes created OOTB while they are not yet support OpenShift Data Foundation (ODF).

The detailed steps for installing Managed OpenShift are listed in:

For a unmanaged OpenShift using Installer Provisioned Infrastructure (IPI) there are some use-cases explained in:

Implementing openshift-gitops operator is discussed in TBA.

Creating infrastructure nodes and storage nodes for aws, azure and vsphere is explained in infrastructure GitOps.