EKS Node Group Nodes Not Able to Join the Cluster

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Revision as of 08:31, 4 February 2021 by Ovidiu (talk | contribs) (→‎Root Cause)
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Internal

Overview

Creation of a new node group takes a long time, and eventually the state transitions to "Create failed". The corresponding autoscaling group is correctly created and the nodes are healthy. Yet, they cannot join the cluster.

Root Cause

The problem is caused by the fact that cluster security group loses all its inbound rules.

Fix