Søren Eggert Lundsteen Olsen
2284e7f082
A DBA should be able to review every statement SQLInsight sends to a monitored server before granting it access. "SQL Scripts/<rule-id>.sql" holds, per rule (82 built-in, 16 community), a Danish header (what and why, how C# judges the data, thresholds with config keys, severity, exact GRANTs, versions, collector file and member) and the collector's SQL verbatim, every version variant as its own batch. "_collectors/<Collector>.sql" holds each collector's queries once. The only statement that is not strictly read-only is documented in the scripts: the deadlock collector's session temp table (#system_health). Inline SQL in the collectors moved to internal constants and Build*Sql methods (no text changed), so SqlScriptTests can check that the scripts still contain the SQL the code sends, that every rule has a script, that every collector query is registered, and that nothing writes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
118 lines
8 KiB
Transact-SQL
118 lines
8 KiB
Transact-SQL
-- ===================================================================================================================
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-- SQLI-LOG-002: I/O-forespørgsler, der tager over 15 sekunder (fejl 833)
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-- ===================================================================================================================
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-- Regel-id: SQLI-LOG-002
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-- Titel: I/O-forespørgsler, der tager over 15 sekunder (fejl 833)
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-- Alvor: High
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-- Versioner: SQL Server 2005 og nyere. Kræver at fejlloggen selv kan læses (xp_readerrorlog, serverrollen
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-- securityadmin): fejl 833 står hverken i default trace eller ring buffer, så ellers er reglen "ikke
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-- målbar".
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--
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-- Hvad tjekkes, og hvorfor:
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-- Om storage har brugt over 15 sekunder på I/O-forespørgsler (fejl 833).
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--
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-- Vurdering (sker i C# ud fra de indsamlede data, ikke i SQL'en, medmindre andet er nævnt):
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-- Som SQLI-LOG-001, men kun med kilden "fejlloggen": et fund, når fejl 833 er set inden for de seneste 24 timer.
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--
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-- Grænseværdier (konfigurationsnøgle i agentens appsettings.json og standardværdi):
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-- 24 timer (ErrorLogAnalysis.RecentWindow).
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--
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-- Rettigheder til agentens login (se db/permissions/grant-least-privilege.sql; [agent] = agentens login):
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-- GRANT VIEW SERVER STATE TO [agent]; -- SQL Server 2005-2019
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-- GRANT VIEW SERVER PERFORMANCE STATE TO [agent]; -- SQL Server 2022+ (erstatter VIEW SERVER STATE)
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-- GRANT VIEW SERVER SECURITY STATE TO [agent]; -- SQL Server 2022+
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-- Valgfrit: GRANT ALTER TRACE TO [agent]; -- default trace (udkommenteret i grant-least-privilege.sql; uden den bruges næste kilde)
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-- Valgfrit: ALTER SERVER ROLE [securityadmin] ADD MEMBER [agent]; -- xp_readerrorlog; gives IKKE som standard
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--
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-- Data kommer fra (collector, fil : medlemmer, interval):
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-- ErrorLogCollector
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-- Fil: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs
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-- Medlemmer: ErrorLogCollector.CanReadErrorLogSql, ErrorLogCollector.BuildErrorLogSql(fromLocal, toLocal),
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-- PrivilegeCollector.DefaultTracePathSql, ErrorLogCollector.BuildDefaultTraceSql(files, sinceLocal),
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-- ErrorLogCollector.RingBufferSql, ErrorLogCollector.ConnectivitySql
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-- Interval: 5 min som standard (SQLInsight:CollectorIntervals:error-log)
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-- Delt script: SQL Scripts/_collectors/ErrorLogCollector.sql
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-- Regelkode: src/SQLInsight.Rules/Instance/ErrorLogRules.cs : SlowIoErrorRule
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--
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-- Read-only: Ja: kun SELECT samt xp_readerrorlog (læser fejlloggen), sys.fn_trace_gettable (læser default trace),
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-- SET-sessionsindstillinger. Intet ændrer data, indstillinger eller objekter.
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-- Kørsel: Kør i SSMS som agentens login (eller et login med samme rettigheder). Hver variant er sin egen batch
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-- (GO); en variant for en anden SQL Server-version end din kan fejle - det er forventet.
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-- Per-database-forespørgsler er vist for databasen msdb, som findes overalt: ret navnet til den
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-- database, du vil se.
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-- ===================================================================================================================
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-- -------------------------------------------------------------------------------------------------------------------
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-- Forbindelsen: Sessionsindstillinger, agenten sætter på hver forbindelse
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-- -------------------------------------------------------------------------------------------------------------------
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-- Variant: Alle versioner: sættes på hver forbindelse, agenten åbner
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-- Kilde: SqlConnectionFactory.SessionSettings
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-- Kode: src/SQLInsight.Connectivity/SqlConnectionFactory.cs : SqlConnectionFactory.SessionSettings
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SET LOCK_TIMEOUT 5000; SET DEADLOCK_PRIORITY LOW; SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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GO
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-- -------------------------------------------------------------------------------------------------------------------
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-- ErrorLogCollector: SQL Server-fejlloggen siden forrige måling fra den bedste kilde, agentens rettigheder giver: 1)
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-- fejlloggen (xp_readerrorlog, kræver securityadmin), 2) default trace (kræver ALTER TRACE), 3) exception- og
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-- connectivity ring buffer (kun fejlnumre).
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-- -------------------------------------------------------------------------------------------------------------------
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-- Variant: SQL Server 2005 og nyere
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-- Kilde: ErrorLogCollector.CanReadErrorLogSql
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-- Kode: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs : ErrorLogCollector.CanReadErrorLogSql
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SELECT CASE WHEN IS_SRVROLEMEMBER(N'securityadmin') = 1 OR IS_SRVROLEMEMBER(N'sysadmin') = 1 THEN 1 ELSE 0 END,
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DATEDIFF(minute, GETUTCDATE(), GETDATE()), GETUTCDATE()
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GO
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-- Variant: SQL Server 2005 og nyere, kilde 1: fejlloggen (når agenten er securityadmin)
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-- Kilde: ErrorLogCollector.BuildErrorLogSql
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-- Kode: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs : ErrorLogCollector.BuildErrorLogSql(fromLocal, toLocal)
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-- Agenten indsætter tidspunktet for forrige måling og nu + 1 minut (serverens lokale tid) som literaler, fx
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-- '2026-10-02T09:00:00'. Her er de variabler, så scriptet kan køres i SSMS.
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DECLARE @fra nvarchar(19);
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DECLARE @til nvarchar(19);
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SET @fra = CONVERT(nvarchar(19), DATEADD(hour, -1, GETDATE()), 126);
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SET @til = CONVERT(nvarchar(19), DATEADD(minute, 1, GETDATE()), 126);
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EXEC master.dbo.xp_readerrorlog 0, 1, NULL, NULL, @fra, @til
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GO
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-- Variant: SQL Server 2005 og nyere, kilde 2: default trace (når agenten har ALTER TRACE)
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-- Kilde: ErrorLogCollector.DefaultTracePathSql
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-- Kode: src/SQLInsight.Collectors/Instance/PrivilegeCollector.cs : PrivilegeCollector.DefaultTracePathSql
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SELECT path, DATEDIFF(minute, GETUTCDATE(), GETDATE()) FROM sys.traces WHERE is_default = 1
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GO
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-- Variant: SQL Server 2005 og nyere, kilde 2: default trace (når agenten har ALTER TRACE)
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-- Kilde: ErrorLogCollector.BuildDefaultTraceSql
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-- Kode: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs : ErrorLogCollector.BuildDefaultTraceSql(files, sinceLocal)
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-- Agenten indsætter filargumenterne som literaler: første gang og efter rollover mappen + log.trc med DEFAULT (alle
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-- rollover-filer), ellers den aktuelle fil med 1 (kun den fil), samt tidspunktet for forrige måling (lokal tid).
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-- Her er de variabler, så scriptet kan køres i SSMS.
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DECLARE @fil nvarchar(260);
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DECLARE @siden nvarchar(19);
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SELECT @fil = LEFT(path, LEN(path) - CHARINDEX(N'\', REVERSE(path)) + 1) + N'log.trc' FROM sys.traces WHERE is_default = 1;
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SET @siden = CONVERT(nvarchar(19), DATEADD(hour, -1, GETDATE()), 126);
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SELECT StartTime, EventClass, Error, Severity, CAST(TextData AS nvarchar(2000))
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FROM sys.fn_trace_gettable(@fil, DEFAULT)
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WHERE EventClass IN (20, 22) AND StartTime > @siden
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GO
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-- Variant: SQL Server 2005 og nyere, kilde 3: exception ring buffer (kun VIEW SERVER STATE)
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-- Kilde: ErrorLogCollector.RingBufferSql
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-- Kode: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs : ErrorLogCollector.RingBufferSql
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SELECT DATEADD(millisecond, -CAST((i.ms_ticks - rb.timestamp) % 1000 AS int), DATEADD(second, -CAST((i.ms_ticks - rb.timestamp) / 1000 AS int), GETUTCDATE())),
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rb.x.value('(//Exception/Error)[1]', 'int'), rb.x.value('(//Exception/Severity)[1]', 'int')
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FROM (SELECT timestamp, CAST(record AS xml) AS x FROM sys.dm_os_ring_buffers WHERE ring_buffer_type = N'RING_BUFFER_EXCEPTION') rb
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CROSS JOIN sys.dm_os_sys_info i
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GO
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-- Variant: SQL Server 2008 og nyere, kilde 3: mislykkede logins fra connectivity ring buffer
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-- Kilde: ErrorLogCollector.ConnectivitySql
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-- Kode: src/SQLInsight.Collectors/Instance/ErrorLogCollector.cs : ErrorLogCollector.ConnectivitySql
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SELECT DATEADD(millisecond, -CAST((i.ms_ticks - rb.timestamp) % 1000 AS int), DATEADD(second, -CAST((i.ms_ticks - rb.timestamp) / 1000 AS int), GETUTCDATE())),
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rb.x.value('(//SniConsumerError)[1]', 'int'), rb.x.value('(//State)[1]', 'int'), rb.x.value('(//RemoteHost)[1]', 'nvarchar(128)')
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FROM (SELECT timestamp, CAST(record AS xml) AS x FROM sys.dm_os_ring_buffers
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WHERE ring_buffer_type = N'RING_BUFFER_CONNECTIVITY' AND record LIKE N'%<SniConsumerError>18456</SniConsumerError>%') rb
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CROSS JOIN sys.dm_os_sys_info i
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GO
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