在XenDesktop的部署过程中如果是用SQL Mirror的方式我们建议用户在配置好Mirror之后在初始化XenDesktop站点配置，这样在Connection string中默认会包含mirror数据库连接。但是有时候难免会有用户出现先配置站点以后在配置mirror，这样就会让事情变的非常复杂，需要几十条命令重置所有service的connection string，稍有不慎可能导致环境挂掉。这里我整理了2段简单的脚本供大家使用。

注意事项

1. 修改前务必对DDC和DB做快照
2. 此脚本仅适用于7.15 LTSR, 不同的版本服务数量会有差异，请自行修改

具体步骤

1. 我们首先需要将DDC中的connection string置空，您可以将一下内容保存为ps1文件到DDC上通过管理员权限执行
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\DesktopServer\DataStore\Connections\Controller ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ADIdentitySchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\Analytics\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\AppLibrarySchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ConfigLoggingSiteSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ConfigurationSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\DAS\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\DesktopUpdateManagerSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\EnvTestServiceSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\HostingUnitServiceSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\Monitor\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\OrchestrationSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\StorefrontSchema\DataStore\Connections ConnectionString $null
   Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\TrustSchema\DataStore\Connections ConnectionString $null

2. 重启DDC
3. DDC上重置connection string, 服务器地址请自行修改，保存ps1文件DDC上通过Powershell执行

Asnp citrix*
$cs="Server=DB.ctx.com;Failover Partner=DB2.ctx.com;Initial Catalog=Citrixsite;Integrated Security=True"
$cslog="Server=DB.ctx.com;Failover Partner=DB2.ctx.com;Initial Catalog=CitrixLogging;Integrated Security=True"
$csmonitor="Server=DB.ctx.com;Failover Partner=DB2.ctx.com;Initial Catalog=CitrixMonitoring;Integrated Security=True"

Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\DesktopServer\DataStore\Connections\Controller ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ADIdentitySchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\Analytics\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\AppLibrarySchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ConfigLoggingSiteSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\ConfigurationSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\DAS\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\DesktopUpdateManagerSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\EnvTestServiceSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\HostingUnitServiceSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\Monitor\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\OrchestrationSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\StorefrontSchema\DataStore\Connections ConnectionString $cs
Set-ItemProperty -Path HKLM:\SOFTWARE\Citrix\XDservices\TrustSchema\DataStore\Connections ConnectionString $cs

Set-MonitorDBConnection -datastore Monitor -DBConnection $null
Set-MonitorDBConnection -datastore Monitor -DBConnection $csmonitor
Set-LogDBConnection -datastore Logging -DBConnection $null
Set-LogDBConnection -datastore Logging -DBConnection $cslog

4. 重启DDC
5. 如果DDC多台则需要分别修改

希望对大家有所帮助