WSUS Grundlagen

WSUS Begriffe und Abkürzungen

SUS     - Server Update Service
WSUS - Windows Server Update Services, ehemals SUS
LCU    - Latest Cumulative Update - Feature Updates - 2x/Jahr
SSU    - Servicing Stack Update
SUVP - Security Update Validation Program
WID   - Windows Internal Database
SQL    - Structured Query Language

Dateien und Verzeichnisse

# interne WSUS-Datenbank
%SystemDrive%\Windows\WID\Data\SUSDB.mdf

WSUS-Port http 8530
WSUS-Port https 8531

# WSUS mit Powershell bereinigen:

    CleanupObsoleteComputers
    CleanupObsoleteUpdates
    CleanupUnneededContentFiles
    DeclineExpiredUpdates
    DeclineSupersededUpdates
    CompressUpdates

# WSUS vollstündig löschen und neu starten???
# powershell als admin:
   Uninstall-WindowsFeature -Name UpdateServices,Windows-Internal-Database -Restart
   reboot
# alles in C:\Windows\WID\Data löschen
# neu installieren:
   Install-WindowsFeature UpdateServices -Restart

# Neuindizieren der WSUS-Datenbank (SUSDB)
# download:
Microsoft SQL Server Management Studio Express

# das folgende als Script speichern und ausführen:
########################
USE SUSDB;
GO
SET NOCOUNT ON;
 
-- Rebuild or reorganize indexes based on their fragmentation levels
DECLARE @work_to_do TABLE (
    objectid int
    , indexid int
    , pagedensity float
    , fragmentation float
    , numrows int
)
 
DECLARE @objectid int;
DECLARE @indexid int;
DECLARE @schemaname nvarchar(130); 
DECLARE @objectname nvarchar(130); 
DECLARE @indexname nvarchar(130); 
DECLARE @numrows int
DECLARE @density float;
DECLARE @fragmentation float;
DECLARE @command nvarchar(4000); 
DECLARE @fillfactorset bit
DECLARE @numpages int
 
-- Select indexes that need to be defragmented based on the following
-- * Page density is low
-- * External fragmentation is high in relation to index size
PRINT 'Estimating fragmentation: Begin. ' + convert(nvarchar, getdate(), 121) 
INSERT @work_to_do
SELECT
    f.object_id
    , index_id
    , avg_page_space_used_in_percent
    , avg_fragmentation_in_percent
    , record_count
FROM 
    sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL , NULL, 'SAMPLED') AS f
WHERE
    (f.avg_page_space_used_in_percent < 85.0 and f.avg_page_space_used_in_percent/100.0 * page_count < page_count - 1)
    or (f.page_count > 50 and f.avg_fragmentation_in_percent > 15.0)
    or (f.page_count > 10 and f.avg_fragmentation_in_percent > 80.0)
 
PRINT 'Number of indexes to rebuild: ' + cast(@@ROWCOUNT as nvarchar(20))
 
PRINT 'Estimating fragmentation: End. ' + convert(nvarchar, getdate(), 121)
 
SELECT @numpages = sum(ps.used_page_count)
FROM
    @work_to_do AS fi
    INNER JOIN sys.indexes AS i ON fi.objectid = i.object_id and fi.indexid = i.index_id
    INNER JOIN sys.dm_db_partition_stats AS ps on i.object_id = ps.object_id and i.index_id = ps.index_id
 
-- Declare the cursor for the list of indexes to be processed.
DECLARE curIndexes CURSOR FOR SELECT * FROM @work_to_do
 
-- Open the cursor.
OPEN curIndexes
 
-- Loop through the indexes
WHILE (1=1)
BEGIN
    FETCH NEXT FROM curIndexes
    INTO @objectid, @indexid, @density, @fragmentation, @numrows;
    IF @@FETCH_STATUS < 0 BREAK;
 
    SELECT 
        @objectname = QUOTENAME(o.name)
        , @schemaname = QUOTENAME(s.name)
    FROM 
        sys.objects AS o
        INNER JOIN sys.schemas as s ON s.schema_id = o.schema_id
    WHERE 
        o.object_id = @objectid;
 
    SELECT 
        @indexname = QUOTENAME(name)
        , @fillfactorset = CASE fill_factor WHEN 0 THEN 0 ELSE 1 END
    FROM 
        sys.indexes
    WHERE
        object_id = @objectid AND index_id = @indexid;
 
    IF ((@density BETWEEN 75.0 AND 85.0) AND @fillfactorset = 1) OR (@fragmentation < 30.0)
        SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REORGANIZE';
    ELSE IF @numrows >= 5000 AND @fillfactorset = 0
        SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REBUILD WITH (FILLFACTOR = 90)';
    ELSE
        SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REBUILD';
    PRINT convert(nvarchar, getdate(), 121) + N' Executing: ' + @command;
    EXEC (@command);
    PRINT convert(nvarchar, getdate(), 121) + N' Done.';
END
 
-- Close and deallocate the cursor.
CLOSE curIndexes;
DEALLOCATE curIndexes;
 
 
IF EXISTS (SELECT * FROM @work_to_do)
BEGIN
    PRINT 'Estimated number of pages in fragmented indexes: ' + cast(@numpages as nvarchar(20))
    SELECT @numpages = @numpages - sum(ps.used_page_count)
    FROM
        @work_to_do AS fi
        INNER JOIN sys.indexes AS i ON fi.objectid = i.object_id and fi.indexid = i.index_id
        INNER JOIN sys.dm_db_partition_stats AS ps on i.object_id = ps.object_id and i.index_id = ps.index_id
 
    PRINT 'Estimated number of pages freed: ' + cast(@numpages as nvarchar(20))
END
GO
 
 
--Update all statistics
PRINT 'Updating all statistics.' + convert(nvarchar, getdate(), 121) 
EXEC sp_updatestats
PRINT 'Done updating statistics.' + convert(nvarchar, getdate(), 121) 
GO
########################

Links

# für den Server 2016 / Server 2019, WSUS Reporting
Microsoft Report Viewer 2012-Laufzeit
Microsoft-System-CLR-Typen für SQL Server, 32bit
Microsoft-System-CLR-Typen für SQL Server, 64bit

Wikipedia - WSUS

Microsoft - Windows Server Update Services (WSUS)

Microsoft - Vorgänge für Updates

Microsoft - Migrieren der WSUS-Datenbank von WID zu SQL