Networking configurations

This document describes the various networking configurations supported by the agent-based installer for OpenShift.

DHCP
Static Networking

DHCP

The agent-based installer for Openshift can be deployed using the below 2 ways with DHCP:

1. install config + agent config (with only the rendezvous IP)

For this option, provide the usual install-config.yaml based on the cluster topology you want to create a cluster for i.e. SNO, HA or Compact. Provide the agent-config.yaml with as little content as below (of course, if you want to add role or rootDeviceHints config you may)

agent-config.yaml

apiVersion: v1alpha1
kind: AgentConfig
metadata:
  name: ostest
  namespace: cluster0
rendezvousIP: <NODE_ZERO_IP>

With this option, when you create an agent iso, the agent-based installer for OpenShift, first reads the provided agent-config.yaml and install-config.yaml and then programmatically creates the low level ZTP manifests such as agent-cluster-install.yaml, cluster-image-set.yaml, cluster-deployment.yaml, etc. intentionally skipping nmstateconfig.yaml

2. ZTP manifests without the nmstateconfig.yaml

With this approach, you can manually provide all the ZTP manifests such as agent-cluster-install.yaml, cluster-image-set.yaml, cluster-deployment.yaml, etc. except the nmstateconfig.yaml in the default cluster-manifests directory, for example, and then create the agent iso.

Note:

To create the iso, run openshift-install agent create image command.

Static Networking

TBD

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