Check Instance Info

,

Named or default instance, this will check info like Virtual Server Name, Cluster Name , Current owner, Preferred Owner? and? Status? (if clustered) and IP/Port for the current instance.

EDIT: Optimized method of finding scenario.

DECLARE @RegKey NVARCHAR(255), @RegKey2 NVARCHAR(255), @RegKey3 NVARCHAR(255), @ListeningOnPort VARCHAR(10), @IP VARCHAR(15)
DECLARE @SERVER NVARCHAR(12), @GROUP NVARCHAR(12), @NODE NVARCHAR(12), @PNODE NVARCHAR(12), @STATUS NVARCHAR(17)
DECLARE @CMD VARCHAR(255), @CLUSTER NVARCHAR(13), @LEN INT, @ClusName VARCHAR(16), @ClusIP VARCHAR(15)

IF SERVERPROPERTY('IsClustered') = 1
BEGIN
IF LEN(CAST( SERVERPROPERTY('InstanceName') AS NVARCHAR(128))) > 0
BEGIN
SET @RegKey = N'Software\Microsoft\Microsoft SQL Server\' + CAST( SERVERPROPERTY('InstanceName') AS NVARCHAR(128)) + N'\MSSQLServer\SuperSocketNetLib\Tcp'
SET @RegKey3 = N'Software\Microsoft\Microsoft SQL Server\' + CAST( SERVERPROPERTY( 'InstanceName') AS NVARCHAR(128)) + N'\Cluster'
END
ELSE
BEGIN
SET @RegKey = N'Software\Microsoft\MSSQLServer\MSSQLServer\SuperSocketNetLib\Tcp'
SET @RegKey3 = N'Software\Microsoft\MSSQLServer\Cluster'
END
SET @RegKey2 = N'Cluster'
EXEC master..xp_regread N'HKEY_LOCAL_MACHINE' , @RegKey2 , N'ClusterName' , @ClusName OUT
IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE name LIKE '#TempIP%')
DROP TABLE #TempIP
CREATE TABLE #TempIP(RegKey VARCHAR(255), IPVal VARCHAR(15), Data VARCHAR(10))
INSERT #TempIP EXEC master..xp_regread N'HKEY_LOCAL_MACHINE' , @RegKey3 , N'ClusterIpAddr'
SELECT @IP = IPVal FROM #TempIP
DROP TABLE #TempIP
END
ELSEBEGIN
SET @RegKey = N'Software\Microsoft\MSSQLServer\MSSQLServer\SuperSocketNetLib\Tcp'
IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE name LIKE '#blat%')
DROP TABLE #blat
CREATE TABLE #blat(Line VARCHAR(255))
INSERT #blat EXEC master..xp_cmdshell 'ipconfig'
DELETE #blat WHERE CHARINDEX('IP Address', Line)<=0
DELETE #blat WHERE Line IS NULL
SELECT TOP 1 @IP = LTRIM((SUBSTRING(Line, CHARINDEX(':', Line)+1, 255))) FROM #blat
DROP TABLE #blat
END

EXEC master..xp_regread N'HKEY_LOCAL_MACHINE' , @RegKey , N'TcpPort' , @ListeningOnPort OUT

IF @ListeningOnPort IS NULL
BEGIN
IF LEN(CAST( SERVERPROPERTY('InstanceName') AS NVARCHAR(128))) > 0
BEGIN
SET @RegKey = N'Software\Microsoft\Microsoft SQL Server\' + CAST( SERVERPROPERTY('InstanceName') AS NVARCHAR(128)) + N'\MSSQLServer\SuperSocketNetLib\Tcp'
END
ELSE
BEGIN
SET @RegKey = N'Software\Microsoft\MSSQLServer\MSSQLServer\SuperSocketNetLib\Tcp'
END
EXEC master..xp_regread N'HKEY_LOCAL_MACHINE' , @RegKey , N'TcpPort' , @ListeningOnPort OUT, NO_OUTPUT
END

IF @ClusName IS NOT NULL OR @ClusName <> ''
BEGIN
IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE name LIKE '#output%')
DROP TABLE #output
CREATE TABLE #output (ID INT IDENTITY(1,1), OUTPUT NVARCHAR(255))
SET @SERVER=LEFT((SELECT @@SERVERNAME),12)
SET @CMD= 'cluster /CLUSTER:' + @ClusName + ' GROUP "' + @SERVER +'"'
INSERT #output EXEC master..xp_cmdshell @CMD
SELECT @NODE = RIGHT(LEFT(OUTPUT,33),12) FROM #output WHERE ID =5
SELECT @LEN = LEN(OUTPUT) FROM #output WHERE ID = 5
SELECT @STATUS = CASE 
 WHEN @LEN = 44 THEN LEFT(RIGHT(OUTPUT,7),6)
 WHEN @LEN = 45 THEN RIGHT(OUTPUT,8)
 WHEN @LEN = 54 THEN Ltrim(RIGHT(OUTPUT,17))
 END
FROM #output WHERE ID = 5
DROP TABLE #output
IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE name LIKE '#prefnodes%')
DROP TABLE #prefnodes
CREATE TABLE #prefnodes (ID INT IDENTITY(1,1), OUTPUT NVARCHAR(255))
SET @SERVER=LEFT((SELECT @@SERVERNAME),12)
SET @CMD= 'cluster /CLUSTER:' + @ClusName + ' GROUP "' + @SERVER +'" /ListOwners'
INSERT #prefnodes EXEC master..xp_cmdshell @CMD
SELECT @PNODE = OUTPUT FROM #prefnodes WHERE ID = 6
DROP TABLE #prefnodes
SELECT @@SERVERNAME 'Virtual_Server', @ClusName 'Cluster', @PNODE 'Preferred_Node', @NODE 'Current_Node', @IP 'Server IP', @ListeningOnPort 'Port', @STATUS 'Status', GetDate() 'Date'
END
ELSE
SELECT @@SERVERNAME 'Server', @IP 'Server IP', @ListeningOnPort 'Port', GetDate() 'Date'

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