此监视器检查数据库镜像见证服务器是否可访问。
此监视器检查 Microsoft® SQL Server™ 报告的数据库镜像见证服务器的状态。这是通过对 SQL Server 实例的 master 数据库运行查询并返回数据库镜像见证服务器状态完成的。如果收到此监视器发出的警报,则必须采取措施以将数据库镜像见证服务器恢复到操作状态。
不正常状态表示 SQL Server™ 数据库镜像见证服务器当前不可用。CONNECTED 和 NO-WITNESS 之外的所有状态都将导致不正常状态。下面详细列出了可能的状态: :
镜像见证服务器状态 | 说明 | MOM 运行状况状态 |
CONNECTED | 这是正常操作状态。镜像伙伴可以访问见证服务器。 | 正常运行 |
NO-WITNESS | 这是在不使用见证服务器配置镜像时显示的自定义状态。此状态指示没有为镜像会话指定的见证服务器。对于高性能模式和不带自动故障转移功能的高安全性模式,该状态是正常的操作状态。 | 正常运行 |
UNKNOWN | 在镜像伙伴和见证服务器之间的连接存在一些问题。 | 警告 |
DISCONNECTED | 在镜像伙伴和见证服务器之间没有连接。 | 关键 |
请尝试执行下列操作来解决此问题:
确保镜像配置已完成并且镜像进程已启动并且正在运行。
检查镜像伙伴和见证服务器之间的物理链路。
根据端点配置配置两个服务器上的防火墙规则。
名称 | 说明 | 默认值 |
警报优先级 | 定义警报优先级。 | 正常 |
警报严重性 | 定义警报严重性。 | MatchMonitorHealth |
已启用 | 启用或禁用工作流。 | 是 |
生成警报 | 定义工作流是否生成警报。 | 是 |
间隔(秒) | 运行工作流的重复间隔时间(秒)。 | 900 |
同步时间 | 使用 24 小时格式指定的同步时间。可以忽略。 |
|
超时(秒) | 指定允许工作流在被关闭并标记为失败之前运行的时间。 | 300 |
Target | Microsoft.SQLServer.2014.Mirroring.Database | ||
Parent Monitor | System.Health.AvailabilityState | ||
Category | AvailabilityHealth | ||
Enabled | True | ||
Alert Generate | True | ||
Alert Severity | MatchMonitorHealth | ||
Alert Priority | Normal | ||
Alert Auto Resolve | True | ||
Monitor Type | Microsoft.SQLServer.2014.Mirroring.ScriptedThreeStateType | ||
Remotable | True | ||
Accessibility | Public | ||
Alert Message |
| ||
RunAs | Microsoft.SQLServer.2014.SQLProbeAccount |
<UnitMonitor ID="Microsoft.SQLServer.2014.Mirroring.WitnessStateMonitor" Accessibility="Public" Enabled="true" Target="SQL2014Mirroring!Microsoft.SQLServer.2014.Mirroring.Database" ParentMonitorID="Health!System.Health.AvailabilityState" TypeID="Microsoft.SQLServer.2014.Mirroring.ScriptedThreeStateType" Remotable="true" Priority="Normal" ConfirmDelivery="false" RunAs="SQL2014Core!Microsoft.SQLServer.2014.SQLProbeAccount">
<Category>AvailabilityHealth</Category>
<AlertSettings AlertMessage="Microsoft.SQLServer.2014.Mirroring.WitnessStateMonitor.AlertMessage">
<AlertOnState>Warning</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>MatchMonitorHealth</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$</AlertParameter1>
<AlertParameter2>$Target/Host/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.ServerRole"]/InstanceName$</AlertParameter2>
<AlertParameter3>$Target/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/PrincipalName$</AlertParameter3>
<AlertParameter4>$Target/Property[Type="SQL2014Mirroring!Microsoft.SQLServer.2014.Mirroring.Database"]/Witness$</AlertParameter4>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="Good" MonitorTypeStateID="Good" HealthState="Success"/>
<OperationalState ID="NeitherGoodNorBad" MonitorTypeStateID="NeitherGoodNorBad" HealthState="Warning"/>
<OperationalState ID="Bad" MonitorTypeStateID="Bad" HealthState="Error"/>
</OperationalStates>
<Configuration>
<ScriptName>GetSQL2014MirroringWitnessState.vbs</ScriptName>
<ScriptBody> '#Include File:GetSQL2014MirroringWitnessState.vbs
'Copyright (c) Microsoft Corporation. All rights reserved.
' This script takes a single parameter
' Param 0: The SQL connection string to connect to
Const SQL_MONITORING_CONNECT_FAILURE = -1
Const SQL_MONITORING_QUERY_FAILURE = -2
Const SQL_MONITORING_SUCCESS = 0
Const SCRIPT_EVENT_ID = 4201
Dim GetWitnessStatusQuery
GetWitnessStatusQuery = "SELECT " &_
" d.name, " &_
" CASE WHEN dm.mirroring_witness_name = '' THEN 'NO-WITNESS' ELSE ISNULL(dm.mirroring_witness_state_desc, 'UNKNOWN') END " &_
" FROM sys.databases d " &_
" INNER JOIN sys.database_mirroring dm ON dm.database_id = d.database_id " &_
" WHERE dm.mirroring_guid IS NOT NULL"
Call GetWitnessAccessibility()
Sub GetWitnessAccessibility()
If WScript.Arguments.Count = 4 Then
Dim oBag
Set oBag = oAPI.CreatePropertyBag()
Dim state, serviceName
serviceName = GetSQLServiceName(WScript.Arguments(2))
state = GetServiceState(WScript.Arguments(1), serviceName)
if (state <> "Running") And (state <> "Unknown") Then
Call oAPI.Return(oBag)
WScript.Quit()
End If
Dim nResult
nResult = WitnessAccessibility(WScript.Arguments(0), oBag, WScript.Arguments(1), WScript.Arguments(2), WScript.Arguments(3))
Call oAPI.Return(oBag)
Call GlobalErrorListToEventLog()
Else
Wscript.Quit()
End If
End Sub
Function WitnessAccessibility(ByVal sSQLConnectionString, ByRef oBag, ByVal sComputerName, ByVal sInstanceName, ByVal sTcpPort)
Dim e
Set e = New Error
Dim cnADOConnection
Set cnADOConnection = SmartConnectWithoutSQLADODB(sSQLConnectionString, sTcpPort, sComputerName, sInstanceName, "master")
if cnADOConnection Is Nothing Then
WitnessAccessibility = SQL_MONITORING_CONNECT_FAILURE
Exit Function
End If
Dim oResults
e.Clear
On Error Resume Next
Set oResults = cnADOConnection.Execute(GetWitnessStatusQuery)
e.Save
On Error Goto 0
If e.Number <> 0 Then
WitnessAccessibility = SQL_MONITORING_QUERY_FAILURE
ThrowScriptErrorNoAbort "Query execution failed", e
If (oResults <> null) Then oResults.Close
cnADOConnection.Close
Exit Function
End If
Do While Not oResults.EOF
Call oBag.AddValue(oResults(0) & "-State", CStr(oResults(1)))
oResults.MoveNext
Loop
cnADOConnection.Close
WitnessAccessibility = SQL_MONITORING_SUCCESS
End Function
</ScriptBody>
<IntervalSeconds>900</IntervalSeconds>
<SyncTime/>
<TimeoutSeconds>300</TimeoutSeconds>
<ConnectionString>$Target/Host/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.DBEngine"]/ConnectionString$</ConnectionString>
<GoodExpression>
<Or>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Property[@Name='$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$-State']</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">CONNECTED</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Property[@Name='$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$-State']</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">NO-WITNESS</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</Or>
</GoodExpression>
<NeitherGoodNorBadExpression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Property[@Name='$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$-State']</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">UNKNOWN</Value>
</ValueExpression>
</SimpleExpression>
</NeitherGoodNorBadExpression>
<BadExpression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Property[@Name='$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.Database"]/DatabaseName$-State']</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">DISCONNECTED</Value>
</ValueExpression>
</SimpleExpression>
</BadExpression>
</Configuration>
</UnitMonitor>