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Deployment Guide—Dell EMC Ready Stack for Red Hat OpenShift Container Platform 4.6
Cluster Networking
Overview Defining the CNI Installing the SR-IOV

Defining the CNI

  • By default, the network options are in the install-config.yaml file. See Step 4, substep h in Preparing and running the Ansible playbooks.

    The following sample code shows CNI information in the install-config.yaml file:

    networking:

      clusterNetworks:

      - cidr: 10.128.0.0/14

        hostPrefix: 23

      networkType: OpenShiftSDN

      serviceNetwork:

      - 172.30.0.0/16

    Where:

    • Cidr: Range of IP addresses for pods running in the OpenShift cluster.
    • hostPrefix: Number of IP addresses assigned in each compute node. The value 23 means that there is a limit of 512 IP addresses in each compute node.
    • networkType: Default CNI driver for OpenShift Cluster, which is OpenShiftSDN in this example.
    • serviceNetwork: Range of IP addresses for services created in the OpenShift Cluster.

    Ignition configuration files are created from the information that you define in the install-config.yaml file by using the openshift-install binary file. Creating ignition files is described as a play in the Ansible playbooks. For the specific steps to perform the task, see this GitHub file.

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Installing the SR-IOV