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Editing an additional network

You can modify the configuration for an existing secondary network. You modify secondary networks to update network settings or change network parameters.

Modifying an additional network attachment definition

You can modify a secondary network attachment definition. You modify the attachment definition to update network settings or change network parameters.

Prerequisites

  • You have configured an additional network for your cluster.

  • Install the OpenShift CLI (oc).

  • Log in as a user with cluster-admin privileges.

Procedure

  1. Edit the Cluster Network Operator (CNO) CR in your default text editor by running the following command:

    $ oc edit networks.operator.openshift.io cluster

  2. In the additionalNetworks collection, update the secondary network with your changes.

  3. Save your changes and quit the text editor to commit your changes.

  4. Optional: Confirm that the CNO updated the NetworkAttachmentDefinition object by running the following command. Replace <network_name> with the name of the secondary network to display. There might be a delay before the CNO updates the NetworkAttachmentDefinition object to reflect your changes.

    $ oc get network-attachment-definitions <network_name> -o yaml

    For example, the following console output displays a NetworkAttachmentDefinition object that is named net1:

    $ oc get network-attachment-definitions net1 -o go-template='{{printf "%s\n" .spec.config}}'
{ "cniVersion": "0.3.1", "type": "macvlan",
"master": "ens5",
"mode": "bridge",
"ipam":       {"type":"static","routes":[{"dst":"0.0.0.0/0","gw":"10.128.2.1"}],"addresses":[{"address":"10.128.2.100/23","gateway":"10.128.2.1"}],"dns":{"nameservers":["172.30.0.10"],"domain":"us-west-2.compute.internal","search":["us-west-2.compute.internal"]}} }