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10.10. Removing an additional network

As a cluster administrator you can remove an additional network attachment.

As a cluster administrator, you can remove an additional network from your OpenShift Container Platform cluster. The additional network is not removed from any pods it is attached to.

Prerequisites

  • Install the OpenShift CLI (oc).
  • Log in as a user with cluster-admin privileges.

Procedure

To remove an additional network from your cluster, complete the following steps:

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

    $ oc edit networks.operator.openshift.io cluster
    Copy to Clipboard Toggle word wrap

  2. Modify the CR by removing the configuration from the additionalNetworks collection for the network attachment definition you are removing. 

    apiVersion: operator.openshift.io/v1
kind: Network
metadata:
  name: cluster
spec:
  additionalNetworks: []
    1
    Copy to Clipboard Toggle word wrap
    1
    If you are removing the configuration mapping for the only additional network attachment definition in the additionalNetworks collection, you must specify an empty collection.
  3. Save your changes and quit the text editor to commit your changes.

  4. Optional: Confirm that the additional network CR was deleted by running the following command: 

    $ oc get network-attachment-definition --all-namespaces
    Copy to Clipboard Toggle word wrap
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