Kubernetes Metrics Server Unable to Communicate with kube-apiserver Instances on Master Nodes, "Err: Unable to authenticate request" in OCCNE 1.4
(Doc ID 2778621.1)
Last updated on MAY 21, 2021
Oracle Communications Cloud Native Core - 5G - Version Core 2.1.0 to Core 2.1.0 [Release All Releases] Information in this document applies to any platform.
When the Kubernetes Metrics Server is unable to authenticate client certificates, several high-level commands may fail to execute within the cluster (e.g. kubectl top [pod|node]), and the metrics server pods logs will document repeated failures to authenticate and verify the supplied certificates.
Indications of this Behavior:
Examples of this condition are demonstrated below:
kubectl top [pod|node]
This behavior was observed within a OCCNE 1.4 deployment that had recently had the Kubernetes cluster certificates renewed using a procedure similar to that described within (Doc ID 2778189.1).
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