Microsoft cluster server troubleshooting

To recover from an operating system failure, recover the node and test failover. If the SQL Server instance does not fail over properly, you must use the SQL Server Setup program to remove SQL Server from the failover cluster, make necessary repairs, bring the computer back up, and then add the repaired node back to the failover cluster instance. Recovering from operating system failure this way can take time.

If the operating system failure can be recovered easily, avoid using this technique. Resolution 1 : Check your event logs for signs of networking issues such as adapter failures or DNS problems. Verify that you can ping your domain controller. Issue 2: SQL Server service account passwords are not identical on all cluster nodes, or the node does not restart a SQL Server service that has migrated from a failed node.

If you do not, and you change the SQL Server service account passwords on one node, you must also change the passwords on all other nodes. Resolution 1: Verify that all nodes are using correct firmware versions and same driver versions. Issue 2: A node cannot recover cluster disks that have migrated from a failed node on a shared cluster disk with a different drive letter. Resolution 2: Disk drive letters for the cluster disks must be the same on both servers.

Resolution: To prevent the failure of specific services from causing the SQL Server group to fail over, configure those services using Cluster Administrator in Windows, as follows:. For more information, see Managing Services. For example, if you have a cluster with two nodes Node A and Node B , and a failover cluster instance Virtsql with a default instance, you can connect to the server that has the Network Name resource offline using the following steps:.

Determine on which node the group containing the instance of SQL Server is running by using the Cluster Administrator. For this example, it is Node A. If the quorum disk successfully comes online, it's likely that the quorum is corrupted.

Check the attributes of the Cluster. If either of these conditions exist, the Cluster service can't start. If these steps don't resolve the problem, you should take additional troubleshooting steps. The cluster log file can be valuable in additional troubleshooting. By default, cluster logging is enabled on Windows based computers that are running the Cluster service. Skip to main content. This browser is no longer supported.

Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Fileserver Failover Cluster Draining Node takes forever.

Constant Log - event id on windows server failover Cluster. How do I create a server - 2 node cluster with internal raid connected storage without using free software? Skip to main content. Use information in the local database to try to contact other nodes to begin the join procedure. If a node is contacted and authentication is successful, the join procedure is successful. If no other node is available, the Cluster service uses the information in the local database to mount the quorum device and updates the local copy of the database by loading the latest checkpoint file and replaying the quorum log.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.

Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:.

Verify that the cluster node that is having problems is able to properly authenticate the Service account. You can determine this by logging on to the computer with the Cluster service account, or by checking the System event log for Cluster service logon problem event messages. Start Registry Editor Regedt Make note of the network and quorum keys. If the database is not valid, you can copy and use the cluster database from a live node. If all nodes do not have a valid cluster database, see the following article in the Microsoft Knowledge Base:.

If the node is not the first node in the cluster, check connectivity to other cluster nodes across all available networks.