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>
83 lines
5.4 KiB
Transact-SQL
83 lines
5.4 KiB
Transact-SQL
-- ===================================================================================================================
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-- SQLI-AG-003: En node eller et vidne i clusteret er nede
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-- ===================================================================================================================
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-- Regel-id: SQLI-AG-003
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-- Titel: En node eller et vidne i clusteret er nede
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-- Alvor: High
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-- Versioner: SQL Server 2012 og nyere med Always On og et Windows Server Failover Cluster (tom ved CLUSTER_TYPE
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-- NONE/EXTERNAL).
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--
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-- Hvad tjekkes, og hvorfor:
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-- Om en node eller et vidne i Windows-clusteret under availability groups er nede, så et tab mere kan tage quorum.
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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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-- Ét fund pr. medlem af sys.dm_hadr_cluster_members med member_state <> 1 (UP).
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--
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-- Grænseværdier (konfigurationsnøgle i agentens appsettings.json og standardværdi):
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-- Ingen.
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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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-- GRANT VIEW ANY DEFINITION TO [agent]; -- metadata; giver IKKE adgang til data
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--
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-- Data kommer fra (collector, fil : medlemmer, interval):
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-- AvailabilityGroupCollector
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-- Fil: src/SQLInsight.Collectors/Instance/AvailabilityGroupCollector.cs
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-- Medlemmer: AvailabilityGroupCollector.ReplicasSql, AvailabilityGroupCollector.DatabasesSql,
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-- AvailabilityGroupCollector.ClusterMembersSql
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-- Interval: 1 min som standard (SQLInsight:CollectorIntervals:availability-groups)
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-- Delt script: SQL Scripts/_collectors/AvailabilityGroupCollector.sql
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-- Regelkode: src/SQLInsight.Rules/Availability/AvailabilityRules.cs : ClusterMemberDownRule.Evaluate
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--
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-- Read-only: Ja: kun SELECT samt 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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-- AvailabilityGroupCollector: Always On: replikaer, databasereplikaer (køer, hastigheder, commit-tid) og
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-- Windows-clusterets medlemmer.
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-- -------------------------------------------------------------------------------------------------------------------
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-- Variant: SQL Server 2012 og nyere med Always On slået til
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-- Kilde: AvailabilityGroupCollector.ReplicasSql
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-- Kode: src/SQLInsight.Collectors/Instance/AvailabilityGroupCollector.cs : AvailabilityGroupCollector.ReplicasSql
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SELECT ag.name, ar.replica_server_name, ars.is_local, ars.role_desc, ars.connected_state_desc, ars.synchronization_health_desc,
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ar.availability_mode_desc, ar.failover_mode_desc
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FROM sys.availability_groups ag
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JOIN sys.availability_replicas ar ON ar.group_id = ag.group_id
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LEFT JOIN sys.dm_hadr_availability_replica_states ars ON ars.replica_id = ar.replica_id
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GO
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-- Variant: SQL Server 2012 og nyere med Always On slået til
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-- Kilde: AvailabilityGroupCollector.DatabasesSql
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-- Kode: src/SQLInsight.Collectors/Instance/AvailabilityGroupCollector.cs : AvailabilityGroupCollector.DatabasesSql
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SELECT ag.name, DB_NAME(drs.database_id), ar.replica_server_name, drs.is_local,
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CASE WHEN ars.role = 1 THEN 1 ELSE 0 END,
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drs.synchronization_state_desc, drs.synchronization_health_desc, drs.is_suspended, drs.suspend_reason_desc,
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drs.log_send_queue_size, drs.log_send_rate, drs.redo_queue_size, drs.redo_rate, drs.last_commit_time
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FROM sys.dm_hadr_database_replica_states drs
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JOIN sys.availability_replicas ar ON ar.replica_id = drs.replica_id
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JOIN sys.availability_groups ag ON ag.group_id = drs.group_id
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LEFT JOIN sys.dm_hadr_availability_replica_states ars ON ars.replica_id = drs.replica_id
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GO
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-- Variant: SQL Server 2012 og nyere med Always On slået til (tom uden Windows-cluster)
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-- Kilde: AvailabilityGroupCollector.ClusterMembersSql
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-- Kode: src/SQLInsight.Collectors/Instance/AvailabilityGroupCollector.cs : AvailabilityGroupCollector.ClusterMembersSql
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SELECT member_name, member_type_desc, member_state, member_state_desc, number_of_quorum_votes FROM sys.dm_hadr_cluster_members
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GO
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