Licensing Issues If Nodes Fail
Notification of errors may not occur immediately after a node failure. When nodes fail, the associated licenses are automatically removed from the nodes and new licenses are automatically assigned to the new nodes. If you suspect a node has failed, Teradata strongly suggests you monitor the AWS CloudWatch log (look for log group Teradata/DBS/stack-name and log stream telm_stack-name). If you see a log message, Nodes are in a bad Node Failure Recovery state, see the BYOL requirements. If this does not resolve the issue, contact Teradata Customer Support.