En realidad, es posible desde T-SQL, pero debe cumplir con un cierto conjunto de condiciones y saltar algunos obstáculos.
- Primero, debe habilitar las consultas remotas (OPENDATASOURCE / OPENROWSET) en el servidor desde el que se ejecutarán las consultas.
- En segundo lugar, debe asegurarse de que los servidores de destino tengan habilitado el acceso remoto.
- En tercer lugar, deberá hacer un uso intensivo del SQL dinámico para poder "inyectar" código T-SQL en el motor de la base de datos del servidor de destino que se ejecutará.
Aquí hay un script de muestra que le permitirá aprovechar el CMS para automatizar las tareas de SQL.
/**********************************************************************/
/* Global change password script */
/* */
/* This script changes the password for a SQL login on all servers */
/* managed by a Central Management Server. It assumes that the login */
/* exists on all servers, and that all servers are SQL 2005 or later. */
/**********************************************************************/
DECLARE @nServer NVARCHAR (128) -- Variable to hold the instance name retrieved from the CMS
DECLARE @nSQL NVARCHAR (4000) -- Variable to hold dynamic SQL
DECLARE @ServerFetch INT -- Variable to hold the fetch status. In SQL 2005, the @@FETCH_STATUS
-- variable is scoped at the system level, so if another process is also
-- using a cursor the @@FETCH_STATUS variable will be set according to
-- that operation. This allows us to store a persistent value.
DECLARE curServer CURSOR LOCAL STATIC FOR -- Declare the cursor with the LOCAL and STATIC options, and
-- retrieve the list of server names from the Central Management
-- Server. The value in the [sysmanagement_shared_server_groups_internal]
-- table is user-defined; for purposes of this example we have
-- created a group named "SQL2008".
SELECT DISTINCT
s.server_name AS 'ServerName'
FROM OPENDATASOURCE ('SQLOLEDB', 'Data Source = CMS1\Management; Integrated Security = SSPI').msdb.dbo.sysmanagement_shared_server_groups_internal g
INNER JOIN OPENDATASOURCE ('SQLOLEDB', 'Data Source = CMS1\Management; Integrated Security = SSPI').msdb.dbo.sysmanagement_shared_registered_servers_internal s ON g.server_group_id = s.server_group_id
WHERE g.name = 'SQL2008'
ORDER BY s.server_name
OPEN curServer
FETCH FIRST FROM curServer INTO @nServer -- Retrieve the first row
SET @ServerFetch = @@FETCH_STATUS -- Store the status of the fetch operation
WHILE @ServerFetch = 0 -- If the fetch was successful, we enter the loop. Otherwise
-- execution passes to the statement following the END statement.
BEGIN
-- Build the dynamic SQL to alter the password for the SQL login.
SET @nSQL = 'EXEC OPENDATASOURCE (''SQLOLEDB'', ''Data Source = ' + @nServer
+ '; Integrated Security = SSPI'').master.dbo.sp_executesql N''ALTER LOGIN SQLLogin WITH PASSWORD = ''''<enterStrongPasswordHere>'''''
-- Execute the dynamic SQL.
EXEC sp_executesql @nSQL
FETCH NEXT FROM curServer INTO @nServer -- Retrieve the next row.
SET @ServerFetch = @@FETCH_STATUS -- Store the status of the fetch operation.
END
CLOSE curServer -- Close the cursor.
DEALLOCATE curServer -- Remove the cursor from memory.