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ERROR_CLUSTER_NODE_UP
This is commonly an idempotency or state-transition status rather than a fault. For example, an operation designed for an offline node can return this code after another administrator or automation job has already brought the node online.
What to check
- Confirm the current node state before retrying the command.
- Check for concurrent maintenance or automation actions that changed the node state.
- If the node unexpectedly returned to Up, inspect the cluster log for the preceding membership transition.
Get-ClusterNode
Microsoft: Failover Clustering overview
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