第 3 章 Cluster Network Operator in OpenShift Container Platform

The Cluster Network Operator (CNO) deploys and manages the cluster network components on an OpenShift Container Platform cluster, including the Container Network Interface (CNI) default network provider plug-in selected for the cluster during installation.

3.1. Cluster Network Operator

The Cluster Network Operator implements the network API from the operator.openshift.io API group. The Operator deploys the OpenShift SDN default Container Network Interface (CNI) network provider plug-in, or the default network provider plug-in that you selected during cluster installation, by using a daemon set.

Procedure

The Cluster Network Operator is deployed during installation as a Kubernetes Deployment.

  1. Run the following command to view the Deployment status: 

    $ oc get -n openshift-network-operator deployment/network-operator

    Example output

    NAME               READY   UP-TO-DATE   AVAILABLE   AGE
network-operator   1/1     1            1           56m

  2. Run the following command to view the state of the Cluster Network Operator: 

    $ oc get clusteroperator/network

    Example output

    NAME      VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
network   4.5.4     True        False         False      50m

    The following fields provide information about the status of the operator: AVAILABLE, PROGRESSING, and DEGRADED. The AVAILABLE field is True when the Cluster Network Operator reports an available status condition.