Missing nodes

Problem

You deployed the infrastructure agent and completed the Kubernetes installation procedure but not all nodes show up.

Solution

Follow these steps:

1. Confirm that you can schedule the infrastructure agent on each node by running this command:

   bash

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   $
   kubectl describe daemonset RELEASE_NAME-nrk8s-kubelet

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   Notice that in V2 version of the Kubernetes integration this command changes. See Missing nodes (version 2).

2. Confirm that the time on all nodes is accurate. Nodes that are more than 2 minutes ahead or behind will not show up in the cluster explorer. The following NRQL query can be used to check if this is the case:

   FROM K8sNodeSample
   SELECT latest(nr.ingestTimeMs - timestamp) / 1000 AS 'Clock offset seconds' FACET nodeName
   LIMIT max SINCE 1 DAY AGO

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3. Retrieve the logs from the infrastructure agent on the nodes that do not appear in the cluster explorer and confirm there are no error messages.