Adding node to cluster failing validation

Question

Hi, I'm trying to add a node to an existing cluster but it fails the validation with the following:

An error occurred while executing the test.
There was an error validating that services required for failover clustering are running and configured properly.

An error occurred while validating local built-in users group.

I've checked the services and firewall but everything seems ok. Any ideas/suggestions?

The RPC server is unavailable

Answer 1

Hello

Thank you for your question and reaching out. I can understand you are having query\issues related to

1. Please check if there a DNS entry for the cluster computer object ? and exist the object in the Active directory ? and make sure Admins have access to this object.
2. Disable any Antivirus program or Windows firewall you may have for temporary purpose.
3. Please check if your cluster a production cluster or just a test , If it is just a test , destroy your cluster and start over, It will save troubleshoot time and as now little hints are given.
4. When you build the cluster did you run the cluster validation ? if so where there any errors in the log ? Navigate to C:\Windows\Cluster\Reports directory and open the Validation Report .MHT file look for warning / failed.
5. Create a cluster.log file and post results using below command

Get-ClusterLog –Node <CreateClusterNode>

Reference : https://social.technet.microsoft.com/Forums/lync/en-US/79142076-78f2-498a-817d-1df551b5de0e/error-code-0x800706ba-the-rpc-server-is-unavailable-while-accessing-the-cluster?forum=winserverClustering

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