我们知道，在SQL Server Alwayson 架构中，有多种虚拟IP，例如 WindowsCluster IP，ListenIP，角色高可用性IP（类似于侦听IP）。在某些条件下，例如系统故障，会触发虚拟IP的漂移，如何高效率、低延迟、更好地监控IP漂移情况，是我们DB的一个重要工作。
下面是我们的一个通过SQL Server 存储过程来实现的方案。
2.基本原理周期性收集当前Server 上相应的IP地址，并与上个周期收集的结果比较判断，看那些IP发生了漂移变化。其主要流程图如下;
3.代码实现
表 DBA_ServerIPDataBase_OverCheck，主要存储 当前 （本收集周期） Server的信息（主要是IP信息、ServerName信息等），其创建脚本如下;
/****** Object: Table [dbo].[DBA_ServerIPDataBase_OverCheck] Script Date: 2019/6/27 16:01:27 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[DBA_ServerIPDataBase_OverCheck]( [LocalServerIP] [varchar](20) NULL, [ClusterName] [varchar](50) NULL, [ServerIP] [varchar](20) NULL, [ServerName] [varchar](100) NULL, [ServerFullName] [varchar](100) NULL, [ServerIPType] [varchar](20) NULL, [DataBaseName] [varchar](300) NULL, [DisabledFlag] [varchar](1) NULL, [CreateTime] [datetime] NULL, [CreateBy] [varchar](50) NULL, [ModifyTime] [datetime] NULL, [ModifyBy] [varchar](50) NULL ) ON [PRIMARY] GO SET ANSI_PADDING OFF GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'Windows集群名称' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'ClusterName' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'IP地址' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'ServerIP' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'计算机对象名称' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'ServerName' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'计算机对象全称' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'ServerFullName' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'计算机对象全称' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'ServerIPType' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'0实时有效，1第一次失效，2第二次失效，3第三次失效，4第四次失效，5第五次失效，彻底删除' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'DisabledFlag' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'创建时间' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'CreateTime' GO EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'创建人' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'DBA_ServerIPDataBase_OverCheck', @level2type=N'COLUMN',@level2name=N'CreateBy' GO