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OLCNE/OCSK: Should I be Worried if "CNI0" Interface is not Appearing on Control Plane Nodes of Kubernetes Cluster (Doc ID 2701816.1)

Last updated on MAY 27, 2021

Applies to:

Linux OS - Version Oracle Linux 7.8 with Unbreakable Enterprise Kernel [4.14.35] to Oracle Linux 7.8 with Unbreakable Enterprise Kernel [4.14.35] [Release OL7U8]
Linux x86-64

Symptoms

After rebooting the kubernetes cluster the CNI0 interface is not showing anymore on Control Plane nodes. It only appears on Worker Nodes but the CNI0 was there before a server reboot.

Control Plane nodes:

 

Note: The IPs and hostnames generated in this KM are randomly generated for demonstration purposes, they don't represent a valid system.

Changes

 Reboot was done on all the nodes of the kubernetes cluster

Cause

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In this Document
Symptoms
Changes
Cause
Solution

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