If you continue to see errors after checking that WMI is running, the firewall is properly configured and rebooting, it is possible that your WMI repository has become corrupt so the cluster can no longer read from it. Only do this if the other troubleshooting attempts described above have failed. Follow best practices when rebooting the server, such as live migrating VMs and gracefully failing over other services and applications to reduce downtime. For more information about how WMI uses the firewall and troubleshooting firewall issues, visit: You will see a variety of errors or warnings if your firewall is not property configured. This can be done through the Windows Firewall GUI or running the elevated command: WMI request a DCOM connection to be made between the nodes, so you need to ensure that the ‘Remote Administration’ setting is enabled on every cluster node. However enterprise security policies can make changes over time, so it is worth checking that the firewall on each server is allowing cluster communication. When a cluster is created, we automatically open up all the firewall settings you need. O If you see an error, there is a WMI or firewall issue O If you see a lot of information displayed, WMI is running PS > get-wmiobject mscluster_resourcegroup -computer MyNode -namespace "ROOT\MSCluster“ PowerShell or remotely from another node within the same cluster (2008 R2 or higher only) O If you see an error, there is a WMI issue § Feel free to try a query to confirm, such as selecting ‘Query’ and enter: O If you see more options available, it means you are connected and WMI is working The Windows Management Instrumentation Tester will launch.These tests would be applicable after the cluster has already been created since we are checking for cluster-specific WMI functionality. Next we will check that Failover Clustering WMI (MSCluster) is running. Also check that its Startup Type is set to Automatic. Although you can use WMI remotely, it is better to test this directly on the server to ensure there are no other networking or firewall issue affecting the connection.įirst check that the ‘Windows Management Instrumentation’ Service has started on each node by opening the Services console on that node. Using either PowerShell or Wbemtest you can confirm that WMI is up and running. Windows Server Failover Clustering supports PowerShell and earlier version also come with a lightweight WMI client ( Before troubleshooting WMI, try connecting to that cluster, node or server using these methods when prompted by the cluster:ĭ) Some wizard pages have a ‘browse’ button which allows you to find other clusters in the domain through Active DirectoryĢ) Check your that WMI is Running on the Node It is possible that the reason you cannot contact the other servers is due to a DNS issue. O Note: first confirm you have installed the Failover Clustering feature on this nodeįollow these series of troubleshooting steps to allow you to continue connecting your cluster. Use Server Manager to install the feature on this computer.
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