sys.dm_hadr_availability_replica_cluster_nodes (Transact-SQL)
Applies to: 
SQL Server
Returns a row for every availability replica (regardless of join state) of the Always On availability groups in the Windows Server Failover Clustering (WSFC) cluster.
| Column name | Data type | Description |
|---|---|---|
group_name |
nvarchar(256) | Name of the availability group. |
replica_server_name |
nvarchar(256) | Name of the instance of SQL Server hosting the replica. |
node_name |
nvarchar(256) | Name of the cluster node. |
Remarks
In a Windows Server Failover Cluster (WSFC), the cluster columns display the Windows cluster details. In cases where there's no Windows cluster, such as read-scale availability groups, or availability groups on Linux, columns related to the cluster might display data about an internal default cluster. These columns are for internal use only and can be disregarded.
Permissions
For SQL Server 2019 (15.x) and previous versions, requires VIEW SERVER STATE permission on the server.
For SQL Server 2022 (16.x) and later versions, requires VIEW SERVER PERFORMANCE STATE permission on the server.